Continue documentation cleanup

public/fpdf_ext.h

Index: public/fpdf_ext.h
diff --git a/public/fpdf_ext.h b/public/fpdf_ext.h
index c80dcbbf58fe5e78138e1da59ac4b8bcd8aff029..d00c568241fed9735a508e1d7257201c11331e18 100644
--- a/public/fpdf_ext.h
+++ b/public/fpdf_ext.h
@@ -11,98 +11,87 @@
 
 #ifdef __cplusplus
 extern "C" {
-#endif
+#endif  // __cplusplus
 
-// flags for type of unsupport object.
+// Unsupported XFA form.
 #define FPDF_UNSP_DOC_XFAFORM 1
+// Unsupported portable collection.
 #define FPDF_UNSP_DOC_PORTABLECOLLECTION 2
+// Unsupported attachment.
 #define FPDF_UNSP_DOC_ATTACHMENT 3
+// Unsupported security.
 #define FPDF_UNSP_DOC_SECURITY 4
+// Unsupported shared review.
 #define FPDF_UNSP_DOC_SHAREDREVIEW 5
+// Unsupported shared form, acrobat.
 #define FPDF_UNSP_DOC_SHAREDFORM_ACROBAT 6
+// Unsupported shared form, filesystem.
 #define FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM 7
+// Unsupported shared form, email.
 #define FPDF_UNSP_DOC_SHAREDFORM_EMAIL 8
+// Unsupported 3D annotation.
 #define FPDF_UNSP_ANNOT_3DANNOT 11
+// Unsupported movie annotation.
 #define FPDF_UNSP_ANNOT_MOVIE 12
+// Unsupported sound annotation.
 #define FPDF_UNSP_ANNOT_SOUND 13
+// Unsupported screen media annotation.
 #define FPDF_UNSP_ANNOT_SCREEN_MEDIA 14
+// Unsupported screen rich media annotation.
 #define FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA 15
+// Unsupported attachment annotation.
 #define FPDF_UNSP_ANNOT_ATTACHMENT 16
+// Unsupported signature annotation.
 #define FPDF_UNSP_ANNOT_SIG 17
 
+// Interface for unsupported feature notifications.
 typedef struct _UNSUPPORT_INFO {
-  /**
-  * Version number of the interface. Currently must be 1.
-  **/
+  // Version number of the interface. Must be 1.
   int version;
 
-  /**
-  * Method: FSDK_UnSupport_Handler
-  *            UnSupport Object process handling function.
-  * Interface Version:
-  *           1
-  * Implementation Required:
-  *           Yes
-  * Parameters:
-  *       pThis       -   Pointer to the interface structure itself.
-  *       nType       -   The type of unsupportObject
-  *   Return value:
-  *       None.
-  * */
-
+  // Unsupported object notification function.
+  // Interface Version: 1
+  // Implementation Required: Yes
+  //
+  //   pThis - pointer to the interface structure.
+  //   nType - the type of unsupported object. One of the |FPDF_UNSP_*| entries.
   void (*FSDK_UnSupport_Handler)(struct _UNSUPPORT_INFO* pThis, int nType);
 } UNSUPPORT_INFO;
 
-/**
- * Function: FSDK_SetUnSpObjProcessHandler
- *           Setup A UnSupport Object process handler for foxit sdk.
- * Parameters:
- *          unsp_info       -   Pointer to a UNSUPPORT_INFO structure.
- * Return Value:
- *          TRUE means successful. FALSE means fails.
- **/
-
+// Setup an unsupported object handler.
+//
+//   unsp_info - Pointer to an UNSUPPORT_INFO structure.
+//
+// Returns TRUE on success.
 DLLEXPORT FPDF_BOOL STDCALL
 FSDK_SetUnSpObjProcessHandler(UNSUPPORT_INFO* unsp_info);
 
-// flags for page mode.
-
-// Unknown value
+// Unknown page mode.
 #define PAGEMODE_UNKNOWN -1
-
-// Neither document outline nor thumbnail images visible
+// Document outline, and thumbnails hidden.
 #define PAGEMODE_USENONE 0
-
-// Document outline visible
+// Document outline visible.
 #define PAGEMODE_USEOUTLINES 1
-
-// Thumbnial images visible
+// Thumbnail images visible.
 #define PAGEMODE_USETHUMBS 2
-
-// Full-screen mode, with no menu bar, window controls, or any other window
-// visible
+// Full-screen mode, no menu bar, window controls, or other decorations visible.
 #define PAGEMODE_FULLSCREEN 3
-
-// Optional content group panel visible
+// Optional content group panel visible.
 #define PAGEMODE_USEOC 4
-
-// Attachments panel visible
+// Attachments panel visible.
 #define PAGEMODE_USEATTACHMENTS 5
 
-/**
- * Function: FPDFDoc_GetPageMode
- *           Get the document's PageMode(How the document should be displayed
- *when opened)
- * Parameters:
- *          doc     -   Handle to document. Returned by FPDF_LoadDocument
- *function.
- * Return Value:
- *          The flags for page mode.
- **/
+// Get the document's PageMode.
+//
+//   doc - Handle to document.
+//
+// Returns one of the |PAGEMODE_*| flags defined above.
+//
+// The page mode defines how the document should be initially displayed.
 DLLEXPORT int FPDFDoc_GetPageMode(FPDF_DOCUMENT document);
 
 #ifdef __cplusplus
-}
-#endif
+}  // extern "C"
+#endif  // __cplusplus
 
 #endif  // PUBLIC_FPDF_EXT_H_