Convert FWL_ERR into an enum class.

xfa/fwl/basewidget/fwl_monthcalendarimp.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 XFA_FWL_BASEWIDGET_FWL_MONTHCALENDARIMP_H_
 #define XFA_FWL_BASEWIDGET_FWL_MONTHCALENDARIMP_H_
 
 #include "xfa/fgas/localization/fgas_datetime.h"
 #include "xfa/fwl/core/fwl_widgetimp.h"
 
 class CFWL_MonthCalendarImpDelegate;
 class CFWL_MsgMouse;
 class CFWL_WidgetImpProperties;
 class IFWL_Widget;
 
 struct FWL_DATEINFO;
 
 extern uint8_t FX_DaysInMonth(int32_t iYear, uint8_t iMonth);
 
 class CFWL_MonthCalendarImp : public CFWL_WidgetImp {
  public:
   CFWL_MonthCalendarImp(const CFWL_WidgetImpProperties& properties,
                         IFWL_Widget* pOuter);
   ~CFWL_MonthCalendarImp();
-  virtual FWL_ERR GetClassName(CFX_WideString& wsClass) const;
+  virtual FWL_Error GetClassName(CFX_WideString& wsClass) const;
   virtual uint32_t GetClassID() const;
-  virtual FWL_ERR Initialize();
-  virtual FWL_ERR Finalize();
-  virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
-  virtual FWL_ERR Update();
-  virtual FWL_ERR DrawWidget(CFX_Graphics* pGraphics,
-                             const CFX_Matrix* pMatrix = NULL);
+  virtual FWL_Error Initialize();
+  virtual FWL_Error Finalize();
+  virtual FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
+  virtual FWL_Error Update();
+  virtual FWL_Error DrawWidget(CFX_Graphics* pGraphics,
+                               const CFX_Matrix* pMatrix = NULL);
   virtual int32_t CountSelect();
   virtual FX_BOOL GetSelect(int32_t& iYear,
                             int32_t& iMonth,
                             int32_t& iDay,
                             int32_t nIndex = 0);
   virtual FX_BOOL SetSelect(int32_t iYear, int32_t iMonth, int32_t iDay);
 
  protected:
   struct DATE {
     DATE() : iYear(0), iMonth(0), iDay(0) {}
@@ skipping 177 matching lines @@
   int32_t iDay;
   int32_t iDayOfWeek;
   uint32_t dwStates;
   CFX_RectF rect;
   CFX_WideString wsDay;
 };
 
 class CFWL_MonthCalendarImpDelegate : public CFWL_WidgetImpDelegate {
  public:
   CFWL_MonthCalendarImpDelegate(CFWL_MonthCalendarImp* pOwner);
-  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
-  FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
-                       const CFX_Matrix* pMatrix = NULL) override;
+  void OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnDrawWidget(CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix = NULL) override;
 
  protected:
   void OnActivate(CFWL_Message* pMsg);
   void OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
   void OnLButtonDown(CFWL_MsgMouse* pMsg);
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnMouseLeave(CFWL_MsgMouse* pMsg);
   CFWL_MonthCalendarImp* m_pOwner;
 };
 
 #endif  // XFA_FWL_BASEWIDGET_FWL_MONTHCALENDARIMP_H_