Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/theme/cfwl_monthcalendartp.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 "xfa/fwl/theme/cfwl_monthcalendartp.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/basewidget/ifwl_monthcalendar.h"
@@ skipping 35 matching lines @@
 const int kSeparatorDOffset = -4;
 const int kSeparatorX = 3;
 const int kSeparatorY = kHeaderHeight + kDatesCellHeight + kSeparatorDOffset;
 
 }  // namespace
 
 CFWL_MonthCalendarTP::CFWL_MonthCalendarTP() {
   m_pThemeData = new MCThemeData;
   SetThemeData(0);
 }
+
 CFWL_MonthCalendarTP::~CFWL_MonthCalendarTP() {
   delete m_pThemeData;
 }
-FX_BOOL CFWL_MonthCalendarTP::IsValidWidget(IFWL_Widget* pWidget) {
-  if (!pWidget)
-    return FALSE;
-  return pWidget->GetClassID() == FWL_CLASSHASH_MonthCalendar;
+
+bool CFWL_MonthCalendarTP::IsValidWidget(IFWL_Widget* pWidget) {
+  return pWidget && pWidget->GetClassID() == FWL_Type::MonthCalendar;
 }
 uint32_t CFWL_MonthCalendarTP::SetThemeID(IFWL_Widget* pWidget,
                                           uint32_t dwThemeID,
                                           FX_BOOL bChildren) {
   if (m_pThemeData) {
     SetThemeData(FWL_GetThemeColor(dwThemeID));
   }
   return CFWL_WidgetTP::SetThemeID(pWidget, dwThemeID, bChildren);
 }
 FX_BOOL CFWL_MonthCalendarTP::DrawBackground(CFWL_ThemeBackground* pParams) {
@@ skipping 486 matching lines @@
   } else {
     m_pThemeData->clrCaption = ArgbEncode(0xff, 128, 128, 0);
     m_pThemeData->clrSeperator = ArgbEncode(0xff, 128, 128, 64);
     m_pThemeData->clrDatesHoverBK = ArgbEncode(0xff, 217, 220, 191);
     m_pThemeData->clrDatesSelectedBK = ArgbEncode(0xff, 204, 208, 183);
     m_pThemeData->clrDatesCircle = ArgbEncode(0xff, 128, 128, 0);
     m_pThemeData->clrToday = ArgbEncode(0xff, 0, 0, 0);
     m_pThemeData->clrBK = ArgbEncode(0xff, 255, 255, 255);
   }
 }