Remove CLASSHASH defines in favour of 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"
+#include "xfa/fwl/core/ifwl_widget.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_Error GetClassName(CFX_WideString& wsClass) const;
-  virtual uint32_t GetClassID() const;
-  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);
+  ~CFWL_MonthCalendarImp() override;
+
+  // FWL_WidgetImp
+  FWL_Error GetClassName(CFX_WideString& wsClass) const override;
+  FWL_Type GetClassID() const override;
+  FWL_Error Initialize() override;
+  FWL_Error Finalize() override;
+  FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
+  FWL_Error Update() override;
+  FWL_Error DrawWidget(CFX_Graphics* pGraphics,
+                       const CFX_Matrix* pMatrix = nullptr) override;
+  int32_t CountSelect();
+  FX_BOOL GetSelect(int32_t& iYear,
+                    int32_t& iMonth,
+                    int32_t& iDay,
+                    int32_t nIndex = 0);
+  FX_BOOL SetSelect(int32_t iYear, int32_t iMonth, int32_t iDay);
 
  protected:
   struct DATE {
     DATE() : iYear(0), iMonth(0), iDay(0) {}
     DATE(int32_t year, int32_t month, int32_t day)
         : iYear(year), iMonth(month), iDay(day) {}
     FX_BOOL operator<(const DATE& right) {
       if (iYear < right.iYear) {
         return TRUE;
       } else if (iYear == right.iYear) {
@@ skipping 186 matching lines @@
   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_