Merge to XFA: Tidy public/ directory.

public/fpdfview.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
- 
+
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 // NOTE: External docs refer to this file as "fpdfview.h", so do not rename
 // despite lack of consitency with other public files.
 
-#ifndef _FPDFVIEW_H_
-#define _FPDFVIEW_H_
+#ifndef PUBLIC_FPDFVIEW_H_
+#define PUBLIC_FPDFVIEW_H_
 
 #if defined(_WIN32) && !defined(__WINDOWS__)
 #include <windows.h>
 #endif
 
 //  TODO: remove the #define when XFA is officially in pdfium
 #define PDF_USE_XFA
 
 // Data types
-typedef void*   FPDF_MODULEMGR;
+typedef void* FPDF_MODULEMGR;
 
 // PDF types
-typedef void*   FPDF_DOCUMENT;          
-typedef void*   FPDF_PAGE;                      
-typedef void*   FPDF_WIDGET;    
-typedef void*   FPDF_STRINGHANDLE;
-typedef void*   FPDF_PAGEOBJECT;        // Page object(text, path, etc)
-typedef void*   FPDF_PATH;
-typedef void*   FPDF_CLIPPATH;  
-typedef void*   FPDF_BITMAP;    
-typedef void*   FPDF_FONT;                      
-
-typedef void*   FPDF_TEXTPAGE;
-typedef void*   FPDF_SCHHANDLE;
-typedef void*   FPDF_PAGELINK;
-typedef void*   FPDF_HMODULE;
-typedef void*   FPDF_DOCSCHHANDLE;
-
-typedef void*   FPDF_BOOKMARK;
-typedef void*   FPDF_DEST;
-typedef void*   FPDF_ACTION;
-typedef void*   FPDF_LINK;
-typedef void*   FPDF_PAGERANGE;
+typedef void* FPDF_DOCUMENT;
+typedef void* FPDF_PAGE;
+typedef void* FPDF_WIDGET;
+typedef void* FPDF_STRINGHANDLE;
+typedef void* FPDF_PAGEOBJECT;    // Page object(text, path, etc)
+typedef void* FPDF_PATH;
+typedef void* FPDF_CLIPPATH;
+typedef void* FPDF_BITMAP;
+typedef void* FPDF_FONT;
+typedef void* FPDF_TEXTPAGE;
+typedef void* FPDF_SCHHANDLE;
+typedef void* FPDF_PAGELINK;
+typedef void* FPDF_HMODULE;
+typedef void* FPDF_DOCSCHHANDLE;
+typedef void* FPDF_BOOKMARK;
+typedef void* FPDF_DEST;
+typedef void* FPDF_ACTION;
+typedef void* FPDF_LINK;
+typedef void* FPDF_PAGERANGE;
 
 // Basic data types
-typedef void*                   FPDF_LPVOID;
-typedef void const*             FPDF_LPCVOID;
-typedef int                             FPDF_RESULT;
-typedef int                             FPDF_BOOL;
-typedef int                             FPDF_ERROR;     
-typedef unsigned long   FPDF_DWORD;
-
-typedef float                   FS_FLOAT;
+typedef void* FPDF_LPVOID;
+typedef void const* FPDF_LPCVOID;
+typedef int FPDF_RESULT;
+typedef int FPDF_BOOL;
+typedef int FPDF_ERROR;
+typedef unsigned long FPDF_DWORD;
+typedef float FS_FLOAT;
 
 // Duplex types
 typedef enum _FPDF_DUPLEXTYPE_ {
     DuplexUndefined = 0,
     Simplex,
     DuplexFlipShortEdge,
     DuplexFlipLongEdge
 } FPDF_DUPLEXTYPE;
 
 // String types
-typedef unsigned short                  FPDF_WCHAR;
-typedef unsigned char const*    FPDF_LPCBYTE;
-typedef char const*                             FPDF_LPCSTR;
+typedef unsigned short FPDF_WCHAR;
+typedef unsigned char const* FPDF_LPCBYTE;
+typedef char const* FPDF_LPCSTR;
 
 // FPDFSDK may use three types of strings: byte string, wide string (UTF-16LE encoded), and platform dependent string
-typedef const char*                             FPDF_BYTESTRING;
+typedef const char* FPDF_BYTESTRING;
 
-typedef const unsigned short*   FPDF_WIDESTRING;                // Foxit PDF SDK always use UTF-16LE encoding wide string,
-                                                                                                                // each character use 2 bytes (except surrogation), with low byte first.
+typedef const unsigned short* FPDF_WIDESTRING;        // Foxit PDF SDK always use UTF-16LE encoding wide string,
+                                                      // each character use 2 bytes (except surrogation), with low byte first.
 
 #ifndef _FPDF_DEF_STR_
 #define _FPDF_DEF_STR_
 /** @brief Structure for byte string.
   *
   * @note In SDK, a byte string commonly means a UTF-16LE format string.
   */
 typedef struct _FPDF_BSTR
 {
-        /** 
-         * @brief String buffer.
-         */
-        char*   str;
-        /**
-         * @brief       Length of a string, in bytes.
-         */
-        int     len;
+    /**
+     * @brief String buffer.
+     */
+    char*   str;
+    /**
+     * @brief   Length of a string, in bytes.
+     */
+    int len;
 } FPDF_BSTR;
 
 #endif
 
 // For Windows programmers: for most case it's OK to treat FPDF_WIDESTRING as Windows unicode string,
-//               however, special care needs to be taken if you expect to process Unicode larger than 0xffff.
+//       however, special care needs to be taken if you expect to process Unicode larger than 0xffff.
 // For Linux/Unix programmers: most compiler/library environment uses 4 bytes for a Unicode character,
-//              you have to convert between FPDF_WIDESTRING and system wide string by yourself.
+//      you have to convert between FPDF_WIDESTRING and system wide string by yourself.
 
 #ifdef _WIN32_WCE
 typedef const unsigned short* FPDF_STRING;
 #else
 typedef const char* FPDF_STRING;
 #endif
 
 #ifndef _FS_DEF_MATRIX_
 #define _FS_DEF_MATRIX_
 /** @brief Matrix for transformation. */
 typedef struct _FS_MATRIX_
 {
-        float   a;      /**< @brief Coefficient a.*/
-        float   b;      /**< @brief Coefficient b.*/
-        float   c;      /**< @brief Coefficient c.*/
-        float   d;      /**< @brief Coefficient d.*/
-        float   e;      /**< @brief Coefficient e.*/
-        float   f;      /**< @brief Coefficient f.*/
+    float   a;  /**< @brief Coefficient a.*/
+    float   b;  /**< @brief Coefficient b.*/
+    float   c;  /**< @brief Coefficient c.*/
+    float   d;  /**< @brief Coefficient d.*/
+    float   e;  /**< @brief Coefficient e.*/
+    float   f;  /**< @brief Coefficient f.*/
 } FS_MATRIX;
 #endif
 
 #ifndef _FS_DEF_RECTF_
 #define _FS_DEF_RECTF_
 /** @brief Rectangle area(float) in device or page coordination system. */
 typedef struct _FS_RECTF_
 {
-        /**@{*/
-        /** @brief The x-coordinate of the left-top corner. */
-        float   left;
-        /** @brief The y-coordinate of the left-top corner. */
-        float   top;
-        /** @brief The x-coordinate of the right-bottom corner. */
-        float   right;
-        /** @brief The y-coordinate of the right-bottom corner. */
-        float   bottom;
-        /**@}*/
+    /**@{*/
+    /** @brief The x-coordinate of the left-top corner. */
+    float   left;
+    /** @brief The y-coordinate of the left-top corner. */
+    float   top;
+    /** @brief The x-coordinate of the right-bottom corner. */
+    float   right;
+    /** @brief The y-coordinate of the right-bottom corner. */
+    float   bottom;
+    /**@}*/
 }* FS_LPRECTF, FS_RECTF;
 /** @brief Const Pointer to ::FS_RECTF structure.*/
-typedef const FS_RECTF* FS_LPCRECTF;
+typedef const FS_RECTF* FS_LPCRECTF;
 #endif
 
 #if defined(_WIN32) && defined(FPDFSDK_EXPORTS)
 // On Windows system, functions are exported in a DLL
 #define DLLEXPORT __declspec( dllexport )
 #define STDCALL __stdcall
 #else
 #define DLLEXPORT
 #define STDCALL
 #endif
 
 extern const char g_ExpireDate[];
 extern const char g_ModuleCodes[];
 
 // Exported Functions
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 // Function: FPDF_InitLibrary
-//                      Initialize the FPDFSDK library 
+//          Initialize the FPDFSDK library
 // Parameters:
-//                      None
+//          None
 // Return value:
-//                      None.
+//          None.
 // Comments:
-//                      You have to call this function before you can call any PDF processing functions.
+//          You have to call this function before you can call any PDF processing functions.
 
 DLLEXPORT void STDCALL FPDF_InitLibrary();
 
 
 // Function: FPDF_DestroyLibary
-//                      Release all resources allocated by the FPDFSDK library.
+//          Release all resources allocated by the FPDFSDK library.
 // Parameters:
-//                      None.
+//          None.
 // Return value:
-//                      None.
+//          None.
 // Comments:
-//                      You can call this function to release all memory blocks allocated by the library. 
-//                      After this function called, you should not call any PDF processing functions.
+//          You can call this function to release all memory blocks allocated by the library.
+//          After this function called, you should not call any PDF processing functions.
 DLLEXPORT void STDCALL FPDF_DestroyLibrary();
 
 //Policy for accessing the local machine time.
-#define FPDF_POLICY_MACHINETIME_ACCESS  0
+#define FPDF_POLICY_MACHINETIME_ACCESS  0
 
 // Function: FPDF_SetSandBoxPolicy
-//                      Set the policy for the sandbox environment.
-// Parameters:  
-//                      policy          -       The specified policy for setting, for example:FPDF_POLICY_MACHINETIME_ACCESS.
-//                      enable          -       True for enable, False for disable the policy.
+//          Set the policy for the sandbox environment.
+// Parameters:
+//          policy      -   The specified policy for setting, for example:FPDF_POLICY_MACHINETIME_ACCESS.
+//          enable      -   True for enable, False for disable the policy.
 // Return value:
-//                      None.
-DLLEXPORT void  STDCALL FPDF_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable);
+//          None.
+DLLEXPORT void  STDCALL FPDF_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable);
 
 /**
 * Open and load a PDF document.
-* @param[in] file_path  -       Path to the PDF file (including extension).
-* @param[in] password   -       A string used as the password for PDF file. 
-*                                                       If no password needed, empty or NULL can be used.
-* @note         Loaded document can be closed by FPDF_CloseDocument.
-*                       If this function fails, you can use FPDF_GetLastError() to retrieve
-*                       the reason why it fails.
-*                       The application should call ::FPDF_LoadXFA function after PDF document loaded 
-*                       to support XFA fields in fpdfformfill.h file.
+* @param[in] file_path  -   Path to the PDF file (including extension).
+* @param[in] password   -   A string used as the password for PDF file.
+*                           If no password needed, empty or NULL can be used.
+* @note     Loaded document can be closed by FPDF_CloseDocument.
+*           If this function fails, you can use FPDF_GetLastError() to retrieve
+*           the reason why it fails.
+*           The application should call ::FPDF_LoadXFA function after PDF document loaded
+*           to support XFA fields in fpdfformfill.h file.
 *
-* @retval       A handle to the loaded document. If failed, NULL is returned.
+* @retval   A handle to the loaded document. If failed, NULL is returned.
 */
-DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadDocument(FPDF_STRING file_path, 
-        FPDF_BYTESTRING password);
+DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadDocument(FPDF_STRING file_path,
+    FPDF_BYTESTRING password);
 
 // Function: FPDF_LoadMemDocument
-//                      Open and load a PDF document from memory.
-// Parameters: 
-//                      data_buf        -       Pointer to a buffer containing the PDF document.
-//                      size            -       Number of bytes in the PDF document.
-//                      password        -       A string used as the password for PDF file. 
-//                                                      If no password needed, empty or NULL can be used.
+//          Open and load a PDF document from memory.
+// Parameters:
+//          data_buf    -   Pointer to a buffer containing the PDF document.
+//          size        -   Number of bytes in the PDF document.
+//          password    -   A string used as the password for PDF file.
+//                          If no password needed, empty or NULL can be used.
 // Return value:
-//                      A handle to the loaded document. If failed, NULL is returned.
+//          A handle to the loaded document. If failed, NULL is returned.
 // Comments:
-//                      The memory buffer must remain valid when the document is open.
-//                      Loaded document can be closed by FPDF_CloseDocument.
-//                      If this function fails, you can use FPDF_GetLastError() to retrieve
-//                      the reason why it fails.
+//          The memory buffer must remain valid when the document is open.
+//          Loaded document can be closed by FPDF_CloseDocument.
+//          If this function fails, you can use FPDF_GetLastError() to retrieve
+//          the reason why it fails.
 // Notes:
-//                      The application should call ::FPDF_LoadXFA function after PDF document loaded 
-//                      to support XFA fields in fpdfformfill.h file.
+//          The application should call ::FPDF_LoadXFA function after PDF document loaded
+//          to support XFA fields in fpdfformfill.h file.
 //
-DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadMemDocument(const void* data_buf, 
-                                                                                        int size, FPDF_BYTESTRING password);
+DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadMemDocument(const void* data_buf,
+                                            int size, FPDF_BYTESTRING password);
 
 // Structure for custom file access.
 typedef struct {
-        // File length, in bytes.
-        unsigned long   m_FileLen;
+    // File length, in bytes.
+    unsigned long   m_FileLen;
 
-        // A function pointer for getting a block of data from specific position.
-        // Position is specified by byte offset from beginning of the file.
-        // The position and size will never go out range of file length.
-        // It may be possible for FPDFSDK to call this function multiple times for same position.
-        // Return value: should be non-zero if successful, zero for error.
-        int                             (*m_GetBlock)(void* param, unsigned long position, unsigned char* pBuf, unsigned long size);
+    // A function pointer for getting a block of data from specific position.
+    // Position is specified by byte offset from beginning of the file.
+    // The position and size will never go out range of file length.
+    // It may be possible for FPDFSDK to call this function multiple times for same position.
+    // Return value: should be non-zero if successful, zero for error.
+    int             (*m_GetBlock)(void* param, unsigned long position, unsigned char* pBuf, unsigned long size);
 
-        // A custom pointer for all implementation specific data.
-        // This pointer will be used as the first parameter to m_GetBlock callback.
-        void*                   m_Param;
+    // A custom pointer for all implementation specific data.
+    // This pointer will be used as the first parameter to m_GetBlock callback.
+    void*           m_Param;
 } FPDF_FILEACCESS;
 
 /**
  * @brief Structure for file reading or writing (I/O).
  *
  * @note This is a handler and should be implemented by callers.
  */
 typedef struct _FPDF_FILEHANDLER
 {
-        /**
-         * @brief User-defined data.
-         * @note Callers can use this field to track controls.
-         */
-        FPDF_LPVOID     clientData;
-        /**
-         * @brief Callback function to release the current file stream object.
-         *
-         * @param[in] clientData        Pointer to user-defined data.
-         *
-         * @return None.
-         */
-        void            (*Release)(FPDF_LPVOID clientData);
-        /**
-         * @brief Callback function to retrieve the current file stream size.
-         *
-         * @param[in] clientData        Pointer to user-defined data.
-         *
-         * @return Size of file stream.
-         */
-        FPDF_DWORD      (*GetSize)(FPDF_LPVOID clientData);
-        /**
-         * @brief Callback function to read data from the current file stream.
-         *
-         * @param[in]   clientData      Pointer to user-defined data.
-         * @param[in]   offset          Offset position starts from the beginning of file stream. This parameter indicates reading position.
-         * @param[in]   buffer          Memory buffer to store data which are read from file stream. This parameter should not be <b>NULL</b>.
-         * @param[in]   size            Size of data which should be read from file stream, in bytes. The buffer indicated by the parameter <i>buffer</i> should be enough to store specified data.
-         * 
-         * @return 0 for success, other value for failure.
-         */
-        FPDF_RESULT     (*ReadBlock)(FPDF_LPVOID clientData, FPDF_DWORD offset, FPDF_LPVOID buffer, FPDF_DWORD size);
-        /**
-         * @brief       Callback function to write data into the current file stream.
-         *
-         * @param[in]   clientData      Pointer to user-defined data.
-         * @param[in]   offset          Offset position starts from the beginning of file stream. This parameter indicates writing position.
-         * @param[in]   buffer          Memory buffer contains data which is written into file stream. This parameter should not be <b>NULL</b>.
-         * @param[in]   size            Size of data which should be written into file stream, in bytes.
-         *
-         * @return 0 for success, other value for failure.
-         */
-        FPDF_RESULT     (*WriteBlock)(FPDF_LPVOID clientData, FPDF_DWORD offset, FPDF_LPCVOID buffer, FPDF_DWORD size);
-        /**
-         * @brief       Callback function to flush all internal accessing buffers.
-         *
-         * @param[in]   clientData      Pointer to user-defined data.
-         *
-         * @return 0 for success, other value for failure.
-         */
-        FPDF_RESULT     (*Flush)(FPDF_LPVOID clientData);
-        /**
-         * @brief       Callback function to change file size.
-         *
-         * @details     This function is called under writing mode usually. Implementer can determine whether to realize it based on application requests.
-         *
-         * @param[in]   clientData      Pointer to user-defined data.
-         * @param[in]   size            New size of file stream, in bytes.
-         *
-         * @return 0 for success, other value for failure.
-         */
-        FPDF_RESULT     (*Truncate)(FPDF_LPVOID clientData, FPDF_DWORD size);
+    /**
+     * @brief User-defined data.
+     * @note Callers can use this field to track controls.
+     */
+    FPDF_LPVOID clientData;
+    /**
+     * @brief Callback function to release the current file stream object.
+     *
+     * @param[in] clientData    Pointer to user-defined data.
+     *
+     * @return None.
+     */
+    void        (*Release)(FPDF_LPVOID clientData);
+    /**
+     * @brief Callback function to retrieve the current file stream size.
+     *
+     * @param[in] clientData    Pointer to user-defined data.
+     *
+     * @return Size of file stream.
+     */
+    FPDF_DWORD  (*GetSize)(FPDF_LPVOID clientData);
+    /**
+     * @brief Callback function to read data from the current file stream.
+     *
+     * @param[in]   clientData  Pointer to user-defined data.
+     * @param[in]   offset      Offset position starts from the beginning of file stream. This parameter indicates reading position.
+     * @param[in]   buffer      Memory buffer to store data which are read from file stream. This parameter should not be <b>NULL</b>.
+     * @param[in]   size        Size of data which should be read from file stream, in bytes. The buffer indicated by the parameter <i>buffer</i> should be enough to store specified data.
+     *
+     * @return 0 for success, other value for failure.
+     */
+    FPDF_RESULT (*ReadBlock)(FPDF_LPVOID clientData, FPDF_DWORD offset, FPDF_LPVOID buffer, FPDF_DWORD size);
+    /**
+     * @brief   Callback function to write data into the current file stream.
+     *
+     * @param[in]   clientData  Pointer to user-defined data.
+     * @param[in]   offset      Offset position starts from the beginning of file stream. This parameter indicates writing position.
+     * @param[in]   buffer      Memory buffer contains data which is written into file stream. This parameter should not be <b>NULL</b>.
+     * @param[in]   size        Size of data which should be written into file stream, in bytes.
+     *
+     * @return 0 for success, other value for failure.
+     */
+    FPDF_RESULT (*WriteBlock)(FPDF_LPVOID clientData, FPDF_DWORD offset, FPDF_LPCVOID buffer, FPDF_DWORD size);
+    /**
+     * @brief   Callback function to flush all internal accessing buffers.
+     *
+     * @param[in]   clientData  Pointer to user-defined data.
+     *
+     * @return 0 for success, other value for failure.
+     */
+    FPDF_RESULT (*Flush)(FPDF_LPVOID clientData);
+    /**
+     * @brief   Callback function to change file size.
+     *
+     * @details This function is called under writing mode usually. Implementer can determine whether to realize it based on application requests.
+     *
+     * @param[in]   clientData  Pointer to user-defined data.
+     * @param[in]   size        New size of file stream, in bytes.
+     *
+     * @return 0 for success, other value for failure.
+     */
+    FPDF_RESULT (*Truncate)(FPDF_LPVOID clientData, FPDF_DWORD size);
 
 } FPDF_FILEHANDLER, *FPDF_LPFILEHANDLER;
 
 // Function: FPDF_LoadCustomDocument
-//                      Load PDF document from a custom access descriptor.
-// Parameters:
-//                      pFileAccess     -       A structure for access the file.
-//                      password        -       Optional password for decrypting the PDF file.
-// Return value:
-//                      A handle to the loaded document. If failed, NULL is returned.
-// Comments:
-//                      The application should maintain the file resources being valid until the PDF document close.
-//                      Loaded document can be closed by FPDF_CloseDocument.
+//          Load PDF document from a custom access descriptor.
+// Parameters:
+//          pFileAccess -   A structure for access the file.
+//          password    -   Optional password for decrypting the PDF file.
+// Return value:
+//          A handle to the loaded document. If failed, NULL is returned.
+// Comments:
+//          The application should maintain the file resources being valid until the PDF document close.
+//          Loaded document can be closed by FPDF_CloseDocument.
 // Notes:
-//                      The application should call ::FPDF_LoadXFA function after PDF document loaded 
-//                      to support XFA fields in fpdfformfill.h file.
-//
-DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess, 
-                                                                                                                FPDF_BYTESTRING password);
+//          The application should call ::FPDF_LoadXFA function after PDF document loaded
+//          to support XFA fields in fpdfformfill.h file.
+//
+DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess,
+                                                        FPDF_BYTESTRING password);
 
 // Function: FPDF_GetFileVersion
-//                      Get the file version of the specific PDF document.
-// Parameters:
-//                      doc                     -       Handle to document.
-//                      fileVersion     -       The PDF file version. File version: 14 for 1.4, 15 for 1.5, ...
-// Return value:
-//                      TRUE if this call succeed, If failed, FALSE is returned.
-// Comments:
-//                      If the document is created by function ::FPDF_CreateNewDocument, then this function would always fail.
+//          Get the file version of the specific PDF document.
+// Parameters:
+//          doc         -   Handle to document.
+//          fileVersion -   The PDF file version. File version: 14 for 1.4, 15 for 1.5, ...
+// Return value:
+//          TRUE if this call succeed, If failed, FALSE is returned.
+// Comments:
+//          If the document is created by function ::FPDF_CreateNewDocument, then this function would always fail.
 //
 DLLEXPORT FPDF_BOOL STDCALL FPDF_GetFileVersion(FPDF_DOCUMENT doc, int* fileVersion);
 
-#define FPDF_ERR_SUCCESS                0               // No error.
-#define FPDF_ERR_UNKNOWN                1               // Unknown error.
-#define FPDF_ERR_FILE                   2               // File not found or could not be opened.
-#define FPDF_ERR_FORMAT                 3               // File not in PDF format or corrupted.
-#define FPDF_ERR_PASSWORD               4               // Password required or incorrect password.
-#define FPDF_ERR_SECURITY               5               // Unsupported security scheme.
-#define FPDF_ERR_PAGE                   6               // Page not found or content error.
-#define FPDF_ERR_XFALOAD                7               // Load XFA error.
-#define FPDF_ERR_XFALAYOUT              8       // Layout XFA error.
+#define FPDF_ERR_SUCCESS        0       // No error.
+#define FPDF_ERR_UNKNOWN        1       // Unknown error.
+#define FPDF_ERR_FILE           2       // File not found or could not be opened.
+#define FPDF_ERR_FORMAT         3       // File not in PDF format or corrupted.
+#define FPDF_ERR_PASSWORD       4       // Password required or incorrect password.
+#define FPDF_ERR_SECURITY       5       // Unsupported security scheme.
+#define FPDF_ERR_PAGE           6       // Page not found or content error.
+#define FPDF_ERR_XFALOAD        7       // Load XFA error.
+#define FPDF_ERR_XFALAYOUT      8       // Layout XFA error.
 
 // Function: FPDF_GetLastError
-//                      Get last error code when an SDK function failed.
-// Parameters: 
-//                      None.
-// Return value:
-//                      A 32-bit integer indicating error codes (defined above).
-// Comments:
-//                      If the previous SDK call succeeded, the return value of this function
-//                      is not defined.
-//
-DLLEXPORT unsigned long STDCALL FPDF_GetLastError();
+//          Get last error code when an SDK function failed.
+// Parameters:
+//          None.
+// Return value:
+//          A 32-bit integer indicating error codes (defined above).
+// Comments:
+//          If the previous SDK call succeeded, the return value of this function
+//          is not defined.
+//
+DLLEXPORT unsigned long STDCALL FPDF_GetLastError();
 
 // Function: FPDF_GetDocPermission
-//                      Get file permission flags of the document.
-// Parameters: 
-//                      document        -       Handle to document. Returned by FPDF_LoadDocument function.
-// Return value:
-//                      A 32-bit integer indicating permission flags. Please refer to PDF Reference for
-//                      detailed description. If the document is not protected, 0xffffffff will be returned.
-//
-DLLEXPORT unsigned long STDCALL FPDF_GetDocPermissions(FPDF_DOCUMENT document);
+//          Get file permission flags of the document.
+// Parameters:
+//          document    -   Handle to document. Returned by FPDF_LoadDocument function.
+// Return value:
+//          A 32-bit integer indicating permission flags. Please refer to PDF Reference for
+//          detailed description. If the document is not protected, 0xffffffff will be returned.
+//
+DLLEXPORT unsigned long STDCALL FPDF_GetDocPermissions(FPDF_DOCUMENT document);
 
 // Function: FPDF_GetSecurityHandlerRevision
-//                      Get the revision for security handler.
-// Parameters:
-//                      document        -       Handle to document. Returned by FPDF_LoadDocument function.
-// Return value:
-//                      The security handler revision number. Please refer to PDF Reference for
-//                      detailed description. If the document is not protected, -1 will be returned.
+//          Get the revision for security handler.
+// Parameters:
+//          document    -   Handle to document. Returned by FPDF_LoadDocument function.
+// Return value:
+//          The security handler revision number. Please refer to PDF Reference for
+//          detailed description. If the document is not protected, -1 will be returned.
 //
 DLLEXPORT int STDCALL FPDF_GetSecurityHandlerRevision(FPDF_DOCUMENT document);
 
 // Function: FPDF_GetPageCount
-//                      Get total number of pages in a document.
-// Parameters: 
-//                      document        -       Handle to document. Returned by FPDF_LoadDocument function.
-// Return value:
-//                      Total number of pages in the document.
+//          Get total number of pages in a document.
+// Parameters:
+//          document    -   Handle to document. Returned by FPDF_LoadDocument function.
+// Return value:
+//          Total number of pages in the document.
 //
 DLLEXPORT int STDCALL FPDF_GetPageCount(FPDF_DOCUMENT document);
 
 // Function: FPDF_LoadPage
-//                      Load a page inside a document.
-// Parameters: 
-//                      document        -       Handle to document. Returned by FPDF_LoadDocument function.
-//                      page_index      -       Index number of the page. 0 for the first page.
-// Return value:
-//                      A handle to the loaded page. If failed, NULL is returned.
-// Comments:
-//                      Loaded page can be rendered to devices using FPDF_RenderPage function.
-//                      Loaded page can be closed by FPDF_ClosePage.
-//
-DLLEXPORT FPDF_PAGE     STDCALL FPDF_LoadPage(FPDF_DOCUMENT document, int page_index);
+//          Load a page inside a document.
+// Parameters:
+//          document    -   Handle to document. Returned by FPDF_LoadDocument function.
+//          page_index  -   Index number of the page. 0 for the first page.
+// Return value:
+//          A handle to the loaded page. If failed, NULL is returned.
+// Comments:
+//          Loaded page can be rendered to devices using FPDF_RenderPage function.
+//          Loaded page can be closed by FPDF_ClosePage.
+//
+DLLEXPORT FPDF_PAGE STDCALL FPDF_LoadPage(FPDF_DOCUMENT document, int page_index);
 
 // Function: FPDF_GetPageWidth
-//                      Get page width.
-// Parameters:
-//                      page            -       Handle to the page. Returned by FPDF_LoadPage function.
-// Return value:
-//                      Page width (excluding non-displayable area) measured in points.
-//                      One point is 1/72 inch (around 0.3528 mm).
+//          Get page width.
+// Parameters:
+//          page        -   Handle to the page. Returned by FPDF_LoadPage function.
+// Return value:
+//          Page width (excluding non-displayable area) measured in points.
+//          One point is 1/72 inch (around 0.3528 mm).
 //
 DLLEXPORT double STDCALL FPDF_GetPageWidth(FPDF_PAGE page);
 
 // Function: FPDF_GetPageHeight
-//                      Get page height.
-// Parameters:
-//                      page            -       Handle to the page. Returned by FPDF_LoadPage function.
-// Return value:
-//                      Page height (excluding non-displayable area) measured in points.
-//                      One point is 1/72 inch (around 0.3528 mm)
+//          Get page height.
+// Parameters:
+//          page        -   Handle to the page. Returned by FPDF_LoadPage function.
+// Return value:
+//          Page height (excluding non-displayable area) measured in points.
+//          One point is 1/72 inch (around 0.3528 mm)
 //
 DLLEXPORT double STDCALL FPDF_GetPageHeight(FPDF_PAGE page);
 
 // Function: FPDF_GetPageSizeByIndex
-//                      Get the size of a page by index.
-// Parameters:
-//                      document        -       Handle to document. Returned by FPDF_LoadDocument function.
-//                      page_index      -       Page index, zero for the first page.
-//                      width           -       Pointer to a double value receiving the page width (in points).
-//                      height          -       Pointer to a double value receiving the page height (in points).
-// Return value:
-//                      Non-zero for success. 0 for error (document or page not found).
+//          Get the size of a page by index.
+// Parameters:
+//          document    -   Handle to document. Returned by FPDF_LoadDocument function.
+//          page_index  -   Page index, zero for the first page.
+//          width       -   Pointer to a double value receiving the page width (in points).
+//          height      -   Pointer to a double value receiving the page height (in points).
+// Return value:
+//          Non-zero for success. 0 for error (document or page not found).
 //
 DLLEXPORT int STDCALL FPDF_GetPageSizeByIndex(FPDF_DOCUMENT document, int page_index, double* width, double* height);
 
 
 // Page rendering flags. They can be combined with bit OR.
-#define FPDF_ANNOT                      0x01            // Set if annotations are to be rendered.
-#define FPDF_LCD_TEXT           0x02            // Set if using text rendering optimized for LCD display.
-#define FPDF_NO_NATIVETEXT      0x04            // Don't use the native text output available on some platforms
-#define FPDF_GRAYSCALE          0x08            // Grayscale output.
-#define FPDF_DEBUG_INFO         0x80            // Set if you want to get some debug info. 
-                                                                                // Please discuss with Foxit first if you need to collect debug info.
-#define FPDF_NO_CATCH           0x100           // Set if you don't want to catch exception.
-#define FPDF_RENDER_LIMITEDIMAGECACHE   0x200   // Limit image cache size. 
-#define FPDF_RENDER_FORCEHALFTONE               0x400   // Always use halftone for image stretching.
-#define FPDF_PRINTING           0x800   // Render for printing.
-#define FPDF_REVERSE_BYTE_ORDER         0x10            //set whether render in a reverse Byte order, this flag only 
-                                                                                                //enable when render to a bitmap.
+#define FPDF_ANNOT          0x01        // Set if annotations are to be rendered.
+#define FPDF_LCD_TEXT       0x02        // Set if using text rendering optimized for LCD display.
+#define FPDF_NO_NATIVETEXT  0x04        // Don't use the native text output available on some platforms
+#define FPDF_GRAYSCALE      0x08        // Grayscale output.
+#define FPDF_DEBUG_INFO     0x80        // Set if you want to get some debug info.
+                                        // Please discuss with Foxit first if you need to collect debug info.
+#define FPDF_NO_CATCH       0x100       // Set if you don't want to catch exception.
+#define FPDF_RENDER_LIMITEDIMAGECACHE   0x200   // Limit image cache size.
+#define FPDF_RENDER_FORCEHALFTONE       0x400   // Always use halftone for image stretching.
+#define FPDF_PRINTING       0x800   // Render for printing.
+#define FPDF_REVERSE_BYTE_ORDER     0x10        //set whether render in a reverse Byte order, this flag only
+                                                //enable when render to a bitmap.
 #ifdef _WIN32
 // Function: FPDF_RenderPage
-//                      Render contents in a page to a device (screen, bitmap, or printer).
-//                      This function is only supported on Windows system.
-// Parameters: 
-//                      dc                      -       Handle to device context.
-//                      page            -       Handle to the page. Returned by FPDF_LoadPage function.
-//                      start_x         -       Left pixel position of the display area in the device coordinate.
-//                      start_y         -       Top pixel position of the display area in the device coordinate.
-//                      size_x          -       Horizontal size (in pixels) for displaying the page.
-//                      size_y          -       Vertical size (in pixels) for displaying the page.
-//                      rotate          -       Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
-//                                                              2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
-//                      flags           -       0 for normal display, or combination of flags defined above.
-// Return value:
-//                      None.
+//          Render contents in a page to a device (screen, bitmap, or printer).
+//          This function is only supported on Windows system.
+// Parameters:
+//          dc          -   Handle to device context.
+//          page        -   Handle to the page. Returned by FPDF_LoadPage function.
+//          start_x     -   Left pixel position of the display area in the device coordinate.
+//          start_y     -   Top pixel position of the display area in the device coordinate.
+//          size_x      -   Horizontal size (in pixels) for displaying the page.
+//          size_y      -   Vertical size (in pixels) for displaying the page.
+//          rotate      -   Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
+//                              2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
+//          flags       -   0 for normal display, or combination of flags defined above.
+// Return value:
+//          None.
 // Notes:
-//                      The method can not support to render the page for the document consists of dynamic XFA fields. 
+//          The method can not support to render the page for the document consists of dynamic XFA fields.
 //
 DLLEXPORT void STDCALL FPDF_RenderPage(HDC dc, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
-                                                int rotate, int flags);
+                        int rotate, int flags);
 #endif
 
 // Function: FPDF_RenderPageBitmap
-//                      Render contents in a page to a device independent bitmap
-// Parameters: 
-//                      bitmap          -       Handle to the device independent bitmap (as the output buffer).
-//                                                      Bitmap handle can be created by FPDFBitmap_Create function.
-//                      page            -       Handle to the page. Returned by FPDF_LoadPage function.
-//                      start_x         -       Left pixel position of the display area in the bitmap coordinate.
-//                      start_y         -       Top pixel position of the display area in the bitmap coordinate.
-//                      size_x          -       Horizontal size (in pixels) for displaying the page.
-//                      size_y          -       Vertical size (in pixels) for displaying the page.
-//                      rotate          -       Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
-//                                                              2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
-//                      flags           -       0 for normal display, or combination of flags defined above.
-// Return value:
-//                      None.
+//          Render contents in a page to a device independent bitmap
+// Parameters:
+//          bitmap      -   Handle to the device independent bitmap (as the output buffer).
+//                          Bitmap handle can be created by FPDFBitmap_Create function.
+//          page        -   Handle to the page. Returned by FPDF_LoadPage function.
+//          start_x     -   Left pixel position of the display area in the bitmap coordinate.
+//          start_y     -   Top pixel position of the display area in the bitmap coordinate.
+//          size_x      -   Horizontal size (in pixels) for displaying the page.
+//          size_y      -   Vertical size (in pixels) for displaying the page.
+//          rotate      -   Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
+//                              2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
+//          flags       -   0 for normal display, or combination of flags defined above.
+// Return value:
+//          None.
 // Notes:
-//                      The method can not support to render the page for the document consists of dynamic XFA fields. 
-//
-DLLEXPORT void STDCALL FPDF_RenderPageBitmap(FPDF_BITMAP bitmap, FPDF_PAGE page, int start_x, int start_y, 
-                                                int size_x, int size_y, int rotate, int flags);
+//          The method can not support to render the page for the document consists of dynamic XFA fields.
+//
+DLLEXPORT void STDCALL FPDF_RenderPageBitmap(FPDF_BITMAP bitmap, FPDF_PAGE page, int start_x, int start_y,
+                        int size_x, int size_y, int rotate, int flags);
 
 // Function: FPDF_ClosePage
-//                      Close a loaded PDF page.
-// Parameters: 
-//                      page            -       Handle to the loaded page.
-// Return value:
-//                      None.
+//          Close a loaded PDF page.
+// Parameters:
+//          page        -   Handle to the loaded page.
+// Return value:
+//          None.
 //
 DLLEXPORT void STDCALL FPDF_ClosePage(FPDF_PAGE page);
 
 // Function: FPDF_CloseDocument
-//                      Close a loaded PDF document.
-// Parameters: 
-//                      document        -       Handle to the loaded document.
-// Return value:
-//                      None.
+//          Close a loaded PDF document.
+// Parameters:
+//          document    -   Handle to the loaded document.
+// Return value:
+//          None.
 //
 DLLEXPORT void STDCALL FPDF_CloseDocument(FPDF_DOCUMENT document);
 
 // Function: FPDF_DeviceToPage
-//                      Convert the screen coordinate of a point to page coordinate.
-// Parameters:
-//                      page            -       Handle to the page. Returned by FPDF_LoadPage function.
-//                      start_x         -       Left pixel position of the display area in the device coordinate.
-//                      start_y         -       Top pixel position of the display area in the device coordinate.
-//                      size_x          -       Horizontal size (in pixels) for displaying the page.
-//                      size_y          -       Vertical size (in pixels) for displaying the page.
-//                      rotate          -       Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
-//                                                              2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
-//                      device_x        -       X value in device coordinate, for the point to be converted.
-//                      device_y        -       Y value in device coordinate, for the point to be converted.
-//                      page_x          -       A Pointer to a double receiving the converted X value in page coordinate.
-//                      page_y          -       A Pointer to a double receiving the converted Y value in page coordinate.
-// Return value:
-//                      None.
-// Comments:
-//                      The page coordinate system has its origin at left-bottom corner of the page, with X axis goes along
-//                      the bottom side to the right, and Y axis goes along the left side upward. NOTE: this coordinate system 
-//                      can be altered when you zoom, scroll, or rotate a page, however, a point on the page should always have 
-//                      the same coordinate values in the page coordinate system. 
-//
-//                      The device coordinate system is device dependent. For screen device, its origin is at left-top
-//                      corner of the window. However this origin can be altered by Windows coordinate transformation
-//                      utilities. You must make sure the start_x, start_y, size_x, size_y and rotate parameters have exactly
-//                      same values as you used in FPDF_RenderPage() function call.
+//          Convert the screen coordinate of a point to page coordinate.
+// Parameters:
+//          page        -   Handle to the page. Returned by FPDF_LoadPage function.
+//          start_x     -   Left pixel position of the display area in the device coordinate.
+//          start_y     -   Top pixel position of the display area in the device coordinate.
+//          size_x      -   Horizontal size (in pixels) for displaying the page.
+//          size_y      -   Vertical size (in pixels) for displaying the page.
+//          rotate      -   Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
+//                              2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
+//          device_x    -   X value in device coordinate, for the point to be converted.
+//          device_y    -   Y value in device coordinate, for the point to be converted.
+//          page_x      -   A Pointer to a double receiving the converted X value in page coordinate.
+//          page_y      -   A Pointer to a double receiving the converted Y value in page coordinate.
+// Return value:
+//          None.
+// Comments:
+//          The page coordinate system has its origin at left-bottom corner of the page, with X axis goes along
+//          the bottom side to the right, and Y axis goes along the left side upward. NOTE: this coordinate system
+//          can be altered when you zoom, scroll, or rotate a page, however, a point on the page should always have
+//          the same coordinate values in the page coordinate system.
+//
+//          The device coordinate system is device dependent. For screen device, its origin is at left-top
+//          corner of the window. However this origin can be altered by Windows coordinate transformation
+//          utilities. You must make sure the start_x, start_y, size_x, size_y and rotate parameters have exactly
+//          same values as you used in FPDF_RenderPage() function call.
 //
 DLLEXPORT void STDCALL FPDF_DeviceToPage(FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
-                                                int rotate, int device_x, int device_y, double* page_x, double* page_y);
+                        int rotate, int device_x, int device_y, double* page_x, double* page_y);
 
 // Function: FPDF_PageToDevice
-//                      Convert the page coordinate of a point to screen coordinate.
-// Parameters:
-//                      page            -       Handle to the page. Returned by FPDF_LoadPage function.
-//                      start_x         -       Left pixel position of the display area in the device coordinate.
-//                      start_y         -       Top pixel position of the display area in the device coordinate.
-//                      size_x          -       Horizontal size (in pixels) for displaying the page.
-//                      size_y          -       Vertical size (in pixels) for displaying the page.
-//                      rotate          -       Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
-//                                                              2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
-//                      page_x          -       X value in page coordinate, for the point to be converted.
-//                      page_y          -       Y value in page coordinate, for the point to be converted.
-//                      device_x        -       A pointer to an integer receiving the result X value in device coordinate.
-//                      device_y        -       A pointer to an integer receiving the result Y value in device coordinate.
-// Return value:
-//                      None.
-// Comments:
-//                      See comments of FPDF_DeviceToPage() function.
+//          Convert the page coordinate of a point to screen coordinate.
+// Parameters:
+//          page        -   Handle to the page. Returned by FPDF_LoadPage function.
+//          start_x     -   Left pixel position of the display area in the device coordinate.
+//          start_y     -   Top pixel position of the display area in the device coordinate.
+//          size_x      -   Horizontal size (in pixels) for displaying the page.
+//          size_y      -   Vertical size (in pixels) for displaying the page.
+//          rotate      -   Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
+//                              2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
+//          page_x      -   X value in page coordinate, for the point to be converted.
+//          page_y      -   Y value in page coordinate, for the point to be converted.
+//          device_x    -   A pointer to an integer receiving the result X value in device coordinate.
+//          device_y    -   A pointer to an integer receiving the result Y value in device coordinate.
+// Return value:
+//          None.
+// Comments:
+//          See comments of FPDF_DeviceToPage() function.
 //
 DLLEXPORT void STDCALL FPDF_PageToDevice(FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
-                                                int rotate, double page_x, double page_y, int* device_x, int* device_y);
+                        int rotate, double page_x, double page_y, int* device_x, int* device_y);
 
 // Function: FPDFBitmap_Create
-//                      Create a Foxit Device Independent Bitmap (FXDIB).
-// Parameters:
-//                      width           -       Number of pixels in a horizontal line of the bitmap. Must be greater than 0.
-//                      height          -       Number of pixels in a vertical line of the bitmap. Must be greater than 0.
-//                      alpha           -       A flag indicating whether alpha channel is used. Non-zero for using alpha, zero for not using.
-// Return value:
-//                      The created bitmap handle, or NULL if parameter error or out of memory.
-// Comments:
-//                      An FXDIB always use 4 byte per pixel. The first byte of a pixel is always double word aligned.
-//                      Each pixel contains red (R), green (G), blue (B) and optionally alpha (A) values.
-//                      The byte order is BGRx (the last byte unused if no alpha channel) or BGRA.
-//                      
-//                      The pixels in a horizontal line (also called scan line) are stored side by side, with left most
-//                      pixel stored first (with lower memory address). Each scan line uses width*4 bytes.
-//
-//                      Scan lines are stored one after another, with top most scan line stored first. There is no gap
-//                      between adjacent scan lines.
-//
-//                      This function allocates enough memory for holding all pixels in the bitmap, but it doesn't 
-//                      initialize the buffer. Applications can use FPDFBitmap_FillRect to fill the bitmap using any color.
+//          Create a Foxit Device Independent Bitmap (FXDIB).
+// Parameters:
+//          width       -   Number of pixels in a horizontal line of the bitmap. Must be greater than 0.
+//          height      -   Number of pixels in a vertical line of the bitmap. Must be greater than 0.
+//          alpha       -   A flag indicating whether alpha channel is used. Non-zero for using alpha, zero for not using.
+// Return value:
+//          The created bitmap handle, or NULL if parameter error or out of memory.
+// Comments:
+//          An FXDIB always use 4 byte per pixel. The first byte of a pixel is always double word aligned.
+//          Each pixel contains red (R), green (G), blue (B) and optionally alpha (A) values.
+//          The byte order is BGRx (the last byte unused if no alpha channel) or BGRA.
+//
+//          The pixels in a horizontal line (also called scan line) are stored side by side, with left most
+//          pixel stored first (with lower memory address). Each scan line uses width*4 bytes.
+//
+//          Scan lines are stored one after another, with top most scan line stored first. There is no gap
+//          between adjacent scan lines.
+//
+//          This function allocates enough memory for holding all pixels in the bitmap, but it doesn't
+//          initialize the buffer. Applications can use FPDFBitmap_FillRect to fill the bitmap using any color.
 DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_Create(int width, int height, int alpha);
 
 // More DIB formats
-#define FPDFBitmap_Gray         1               // Gray scale bitmap, one byte per pixel.
-#define FPDFBitmap_BGR          2               // 3 bytes per pixel, byte order: blue, green, red.
-#define FPDFBitmap_BGRx         3               // 4 bytes per pixel, byte order: blue, green, red, unused.
-#define FPDFBitmap_BGRA         4               // 4 bytes per pixel, byte order: blue, green, red, alpha.
+#define FPDFBitmap_Gray     1       // Gray scale bitmap, one byte per pixel.
+#define FPDFBitmap_BGR      2       // 3 bytes per pixel, byte order: blue, green, red.
+#define FPDFBitmap_BGRx     3       // 4 bytes per pixel, byte order: blue, green, red, unused.
+#define FPDFBitmap_BGRA     4       // 4 bytes per pixel, byte order: blue, green, red, alpha.
 
 // Function: FPDFBitmap_CreateEx
-//                      Create a Foxit Device Independent Bitmap (FXDIB)
-// Parameters:
-//                      width           -       Number of pixels in a horizontal line of the bitmap. Must be greater than 0.
-//                      height          -       Number of pixels in a vertical line of the bitmap. Must be greater than 0.
-//                      format          -       A number indicating for bitmap format, as defined above.
-//                      first_scan      -       A pointer to the first byte of first scan line, for external buffer
-//                                                      only. If this parameter is NULL, then the SDK will create its own buffer.
-//                      stride          -       Number of bytes for each scan line, for external buffer only..
-// Return value:
-//                      The created bitmap handle, or NULL if parameter error or out of memory.
-// Comments:
-//                      Similar to FPDFBitmap_Create function, with more formats and external buffer supported. 
-//                      Bitmap created by this function can be used in any place that a FPDF_BITMAP handle is 
-//                      required. 
-//
-//                      If external scanline buffer is used, then the application should destroy the buffer
-//                      by itself. FPDFBitmap_Destroy function will not destroy the buffer.
+//          Create a Foxit Device Independent Bitmap (FXDIB)
+// Parameters:
+//          width       -   Number of pixels in a horizontal line of the bitmap. Must be greater than 0.
+//          height      -   Number of pixels in a vertical line of the bitmap. Must be greater than 0.
+//          format      -   A number indicating for bitmap format, as defined above.
+//          first_scan  -   A pointer to the first byte of first scan line, for external buffer
+//                          only. If this parameter is NULL, then the SDK will create its own buffer.
+//          stride      -   Number of bytes for each scan line, for external buffer only..
+// Return value:
+//          The created bitmap handle, or NULL if parameter error or out of memory.
+// Comments:
+//          Similar to FPDFBitmap_Create function, with more formats and external buffer supported.
+//          Bitmap created by this function can be used in any place that a FPDF_BITMAP handle is
+//          required.
+//
+//          If external scanline buffer is used, then the application should destroy the buffer
+//          by itself. FPDFBitmap_Destroy function will not destroy the buffer.
 //
 DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_CreateEx(int width, int height, int format, void* first_scan, int stride);
 
 // Function: FPDFBitmap_FillRect
-//                      Fill a rectangle area in an FXDIB.
-// Parameters:
-//                      bitmap          -       The handle to the bitmap. Returned by FPDFBitmap_Create function.
-//                      left            -       The left side position. Starting from 0 at the left-most pixel.
-//                      top                     -       The top side position. Starting from 0 at the top-most scan line.
-//                      width           -       Number of pixels to be filled in each scan line.
-//                      height          -       Number of scan lines to be filled.
-//                      color           -       A 32-bit value specifing the color, in 8888 ARGB format.
-// Return value:
-//                      None.
-// Comments:
-//                      This function set the color and (optionally) alpha value in specified region of the bitmap.
-//                      NOTE: If alpha channel is used, this function does NOT composite the background with the source color,
-//                      instead the background will be replaced by the source color and alpha.
-//                      If alpha channel is not used, the "alpha" parameter is ignored.
+//          Fill a rectangle area in an FXDIB.
+// Parameters:
+//          bitmap      -   The handle to the bitmap. Returned by FPDFBitmap_Create function.
+//          left        -   The left side position. Starting from 0 at the left-most pixel.
+//          top         -   The top side position. Starting from 0 at the top-most scan line.
+//          width       -   Number of pixels to be filled in each scan line.
+//          height      -   Number of scan lines to be filled.
+//          color       -   A 32-bit value specifing the color, in 8888 ARGB format.
+// Return value:
+//          None.
+// Comments:
+//          This function set the color and (optionally) alpha value in specified region of the bitmap.
+//          NOTE: If alpha channel is used, this function does NOT composite the background with the source color,
+//          instead the background will be replaced by the source color and alpha.
+//          If alpha channel is not used, the "alpha" parameter is ignored.
 //
 DLLEXPORT void STDCALL FPDFBitmap_FillRect(FPDF_BITMAP bitmap, int left, int top, int width, int height, FPDF_DWORD color);
 
 // Function: FPDFBitmap_GetBuffer
-//                      Get data buffer of an FXDIB
-// Parameters:
-//                      bitmap          -       Handle to the bitmap. Returned by FPDFBitmap_Create function.
-// Return value:
-//                      The pointer to the first byte of the bitmap buffer.
-// Comments:
-//                      The stride may be more than width * number of bytes per pixel
-//                      Applications can use this function to get the bitmap buffer pointer, then manipulate any color
-//                      and/or alpha values for any pixels in the bitmap.
+//          Get data buffer of an FXDIB
+// Parameters:
+//          bitmap      -   Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+//          The pointer to the first byte of the bitmap buffer.
+// Comments:
+//          The stride may be more than width * number of bytes per pixel
+//          Applications can use this function to get the bitmap buffer pointer, then manipulate any color
+//          and/or alpha values for any pixels in the bitmap.
 DLLEXPORT void* STDCALL FPDFBitmap_GetBuffer(FPDF_BITMAP bitmap);
 
 // Function: FPDFBitmap_GetWidth
-//                      Get width of an FXDIB.
-// Parameters:
-//                      bitmap          -       Handle to the bitmap. Returned by FPDFBitmap_Create function.
-// Return value:
-//                      The number of pixels in a horizontal line of the bitmap.
+//          Get width of an FXDIB.
+// Parameters:
+//          bitmap      -   Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+//          The number of pixels in a horizontal line of the bitmap.
 DLLEXPORT int STDCALL FPDFBitmap_GetWidth(FPDF_BITMAP bitmap);
 
 // Function: FPDFBitmap_GetHeight
-//                      Get height of an FXDIB.
-// Parameters:
-//                      bitmap          -       Handle to the bitmap. Returned by FPDFBitmap_Create function.
-// Return value:
-//                      The number of pixels in a vertical line of the bitmap.
+//          Get height of an FXDIB.
+// Parameters:
+//          bitmap      -   Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+//          The number of pixels in a vertical line of the bitmap.
 DLLEXPORT int STDCALL FPDFBitmap_GetHeight(FPDF_BITMAP bitmap);
 
 // Function: FPDFBitmap_GetStride
-//                      Get number of bytes for each scan line in the bitmap buffer.
-// Parameters:
-//                      bitmap          -       Handle to the bitmap. Returned by FPDFBitmap_Create function.
-// Return value:
-//                      The number of bytes for each scan line in the bitmap buffer.
-// Comments:
-//                      The stride may be more than width * number of bytes per pixel
+//          Get number of bytes for each scan line in the bitmap buffer.
+// Parameters:
+//          bitmap      -   Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+//          The number of bytes for each scan line in the bitmap buffer.
+// Comments:
+//          The stride may be more than width * number of bytes per pixel
 DLLEXPORT int STDCALL FPDFBitmap_GetStride(FPDF_BITMAP bitmap);
 
 // Function: FPDFBitmap_Destroy
-//                      Destroy an FXDIB and release all related buffers. 
-// Parameters:
-//                      bitmap          -       Handle to the bitmap. Returned by FPDFBitmap_Create function.
-// Return value:
-//                      None.
-// Comments:
-//                      This function will not destroy any external buffer.
+//          Destroy an FXDIB and release all related buffers.
+// Parameters:
+//          bitmap      -   Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+//          None.
+// Comments:
+//          This function will not destroy any external buffer.
 //
 DLLEXPORT void STDCALL FPDFBitmap_Destroy(FPDF_BITMAP bitmap);
 
 // Function: FPDF_VIEWERREF_GetPrintScaling
-//                      Whether the PDF document prefers to be scaled or not.
-// Parameters: 
-//                      document        -       Handle to the loaded document.
-// Return value:
-//                      None.
+//          Whether the PDF document prefers to be scaled or not.
+// Parameters:
+//          document    -   Handle to the loaded document.
+// Return value:
+//          None.
 //
 DLLEXPORT FPDF_BOOL STDCALL FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document);
 
 // Function: FPDF_VIEWERREF_GetNumCopies
-//                      Returns the number of copies to be printed.
-// Parameters:
-//                      document        -       Handle to the loaded document.
+//          Returns the number of copies to be printed.
+// Parameters:
+//          document    -   Handle to the loaded document.
 // Return value:
 //          The number of copies to be printed.
 //
 DLLEXPORT int STDCALL FPDF_VIEWERREF_GetNumCopies(FPDF_DOCUMENT document);
 
 // Function: FPDF_VIEWERREF_GetPrintPageRange
-//                      Page numbers to initialize print dialog box when file is printed.
-// Parameters:
-//                      document        -       Handle to the loaded document.
+//          Page numbers to initialize print dialog box when file is printed.
+// Parameters:
+//          document    -   Handle to the loaded document.
 // Return value:
 //          The print page range to be used for printing.
 //
 DLLEXPORT FPDF_PAGERANGE STDCALL FPDF_VIEWERREF_GetPrintPageRange(FPDF_DOCUMENT document);
 
 // Function: FPDF_VIEWERREF_GetDuplex
-//                      Returns the paper handling option to be used when printing from print dialog.
-// Parameters:
-//                      document        -       Handle to the loaded document.
+//          Returns the paper handling option to be used when printing from print dialog.
+// Parameters:
+//          document    -   Handle to the loaded document.
 // Return value:
 //          The paper handling option to be used when printing.
 //
 DLLEXPORT FPDF_DUPLEXTYPE STDCALL FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document);
 
 // Function: FPDF_CountNamedDests
-//                      Get the count of named destinations in the PDF document.
-// Parameters:
-//                      document        -       Handle to a document
-// Return value:
-//                      The count of named destinations.
+//          Get the count of named destinations in the PDF document.
+// Parameters:
+//          document    -   Handle to a document
+// Return value:
+//          The count of named destinations.
 DLLEXPORT FPDF_DWORD STDCALL FPDF_CountNamedDests(FPDF_DOCUMENT document);
 
 // Function: FPDF_GetNamedDestByName
-//                      get a special dest handle by the index.
-// Parameters: 
-//                      document        -       Handle to the loaded document.
-//                      name            -       The name of a special named dest.
-// Return value:
-//                      The handle of the dest.
+//          get a special dest handle by the index.
+// Parameters:
+//          document    -   Handle to the loaded document.
+//          name        -   The name of a special named dest.
+// Return value:
+//          The handle of the dest.
 //
 DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDestByName(FPDF_DOCUMENT document, FPDF_BYTESTRING name);
 
 // Function: FPDF_GetNamedDest
-//                      Get the specified named destinations of the PDF document by index.
-// Parameters:
-//                      document        -       Handle to a document
-//                      index           -       The index of named destination.
-//                      buffer          -       The buffer to obtain destination name, used as wchar_t*.
-//                      buflen [in/out] -       Size of the buffer in bytes on input, length of the result in bytes on output or -1 if the buffer is too small.
-// Return value:
-//                      The destination handle of a named destination, or NULL if no named destination corresponding to |index|.
-// Comments:
-//                      Call this function twice to get the name of the named destination:
-//                      1) First time pass in |buffer| as NULL and get buflen.
-//                      2) Second time pass in allocated |buffer| and buflen to retrieve |buffer|, which should be used as wchar_t*.
-//                         If buflen is not sufficiently large, it will be set to -1 upon return.
+//          Get the specified named destinations of the PDF document by index.
+// Parameters:
+//          document        -   Handle to a document
+//          index           -   The index of named destination.
+//          buffer          -   The buffer to obtain destination name, used as wchar_t*.
+//          buflen [in/out] -   Size of the buffer in bytes on input, length of the result in bytes on output or -1 if the buffer is too small.
+// Return value:
+//          The destination handle of a named destination, or NULL if no named destination corresponding to |index|.
+// Comments:
+//          Call this function twice to get the name of the named destination:
+//          1) First time pass in |buffer| as NULL and get buflen.
+//          2) Second time pass in allocated |buffer| and buflen to retrieve |buffer|, which should be used as wchar_t*.
+//             If buflen is not sufficiently large, it will be set to -1 upon return.
 //
 DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDest(FPDF_DOCUMENT document, int index, void* buffer, long* buflen);
 
-// Function: FPDF_BStr_Init     
-//                      Helper function to initialize a byte string.
+// Function: FPDF_BStr_Init
+//          Helper function to initialize a byte string.
 DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Init(FPDF_BSTR* str);
 
-// Function: FPDF_BStr_Set      
-//                      Helper function to set string data.
+// Function: FPDF_BStr_Set
+//          Helper function to set string data.
 DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Set(FPDF_BSTR* str, FPDF_LPCSTR bstr, int length);
 
-// Function: FPDF_BStr_Clear    
-//                      Helper function to clear a byte string.
+// Function: FPDF_BStr_Clear
+//          Helper function to clear a byte string.
 DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Clear(FPDF_BSTR* str);
 
 #ifdef __cplusplus
-};
+}
 #endif
 
-#endif // _FPDFVIEW_H_
+#endif  // PUBLIC_FPDFVIEW_H_