FX_BOOL considered harmful.

fpdfsdk/include/fsdk_define.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
 
 #ifndef FPDFSDK_INCLUDE_FSDK_DEFINE_H_
 #define FPDFSDK_INCLUDE_FSDK_DEFINE_H_
 
 #include "../../core/include/fpdfapi/fpdf_module.h"
@@ skipping 31 matching lines @@
 class CPDF_CustomAccess final : public IFX_FileRead
 {
 public:
         CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess);
         ~CPDF_CustomAccess() {}
 
         virtual FX_FILESIZE     GetSize() override { return m_FileAccess.m_FileLen; }
 
         virtual void            Release() override { delete this; }
 
-        virtual FX_BOOL         ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
+        virtual bool            ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
 
 private:
         FPDF_FILEACCESS         m_FileAccess;
 };
 
 void DropContext(void* data);
 void FSDK_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable);
 FPDF_BOOL FSDK_IsSandBoxPolicyEnabled(FPDF_DWORD policy);
 void FPDF_RenderPage_Retail(CRenderContext* pContext, FPDF_PAGE page,
                             int start_x, int start_y, int size_x, int size_y,
-                            int rotate, int flags, FX_BOOL bNeedToRestore,
+                            int rotate, int flags, bool bNeedToRestore,
                             IFSDK_PAUSE_Adapter* pause);
 
 #endif  // FPDFSDK_INCLUDE_FSDK_DEFINE_H_