FX_BOOL considered harmful.

fpdfsdk/src/formfiller/FFL_PushButton.cpp

 // 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
 
 #include "../../include/formfiller/FormFiller.h"
 #include "../../include/formfiller/FFL_FormFiller.h"
 #include "../../include/formfiller/FFL_PushButton.h"
 
@@ skipping 10 matching lines @@
 
 CPWL_Wnd* CFFL_PushButton::NewPDFWindow(const PWL_CREATEPARAM& cp, CPDFSDK_PageView* pPageView)
 {
         CPWL_PushButton* pWnd = new CPWL_PushButton();
         pWnd->Create(cp);
 
         return pWnd;
 }
 
 
-FX_BOOL CFFL_PushButton::OnChar(CPDFSDK_Annot* pAnnot, FX_UINT nChar, FX_UINT nFlags)
+bool    CFFL_PushButton::OnChar(CPDFSDK_Annot* pAnnot, FX_UINT nChar, FX_UINT nFlags)
 {
         return CFFL_FormFiller::OnChar(pAnnot, nChar, nFlags);
 }
 
 void CFFL_PushButton::OnDraw(CPDFSDK_PageView *pPageView,  CPDFSDK_Annot* pAnnot,
                                                          CFX_RenderDevice* pDevice, CPDF_Matrix* pUser2Device,
                                                          FX_DWORD dwFlags)
 {
         CFFL_Button::OnDraw(pPageView, pAnnot, pDevice, pUser2Device, dwFlags);
 }