Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/basewidget/fwl_datetimepickerimp.h

Index: xfa/fwl/basewidget/fwl_datetimepickerimp.h
diff --git a/xfa/fwl/basewidget/fwl_datetimepickerimp.h b/xfa/fwl/basewidget/fwl_datetimepickerimp.h
index 727692833209d56688ea5a2667ccbbb6509f1b4a..4698f58002b1f2d945f6dd8c092693b7a8f17124 100644
--- a/xfa/fwl/basewidget/fwl_datetimepickerimp.h
+++ b/xfa/fwl/basewidget/fwl_datetimepickerimp.h
@@ -106,42 +106,45 @@ class CFWL_DateTimePickerImp : public CFWL_WidgetImp {
  public:
   CFWL_DateTimePickerImp(const CFWL_WidgetImpProperties& properties,
                          IFWL_Widget* pOuter);
-  virtual ~CFWL_DateTimePickerImp();
-  virtual FWL_ERR 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_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy);
-  virtual FWL_ERR DrawWidget(CFX_Graphics* pGraphics,
-                             const CFX_Matrix* pMatrix = NULL);
-  virtual FWL_ERR SetThemeProvider(IFWL_ThemeProvider* pTP);
-  virtual FWL_ERR GetCurSel(int32_t& iYear, int32_t& iMonth, int32_t& iDay);
-  virtual FWL_ERR SetCurSel(int32_t iYear, int32_t iMonth, int32_t iDay);
-  virtual FWL_ERR SetEditText(const CFX_WideString& wsText);
-  virtual FWL_ERR GetEditText(CFX_WideString& wsText,
-                              int32_t nStart = 0,
-                              int32_t nCount = -1) const;
+  ~CFWL_DateTimePickerImp() override;
+
+  // CFWL_WidgetImp
+  FWL_ERR GetClassName(CFX_WideString& wsClass) const override;
+  FWL_Type GetClassID() const override { return FWL_Type::DateTimePicker; }
+  FWL_ERR Initialize() override;
+  FWL_ERR Finalize() override;
+  FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
+  FWL_ERR Update() override;
+  FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy) override;
+  FWL_ERR DrawWidget(CFX_Graphics* pGraphics,
+                     const CFX_Matrix* pMatrix = nullptr) override;
+  FWL_ERR SetThemeProvider(IFWL_ThemeProvider* pTP) override;
+
+  FWL_ERR GetCurSel(int32_t& iYear, int32_t& iMonth, int32_t& iDay);
+  FWL_ERR SetCurSel(int32_t iYear, int32_t iMonth, int32_t iDay);
+  FWL_ERR SetEditText(const CFX_WideString& wsText);
+  FWL_ERR GetEditText(CFX_WideString& wsText,
+                      int32_t nStart = 0,
+                      int32_t nCount = -1) const;
 
  public:
-  virtual FX_BOOL CanUndo();
-  virtual FX_BOOL CanRedo();
-  virtual FX_BOOL Undo();
-  virtual FX_BOOL Redo();
-  virtual FX_BOOL CanCopy();
-  virtual FX_BOOL CanCut();
-  virtual FX_BOOL CanSelectAll();
-  virtual FX_BOOL Copy(CFX_WideString& wsCopy);
-  virtual FX_BOOL Cut(CFX_WideString& wsCut);
-  virtual FX_BOOL Paste(const CFX_WideString& wsPaste);
-  virtual FX_BOOL SelectAll();
-  virtual FX_BOOL Delete();
-  virtual FX_BOOL DeSelect();
-  virtual FWL_ERR GetBBox(CFX_RectF& rect);
-  virtual FWL_ERR SetEditLimit(int32_t nLimit);
-  virtual FWL_ERR ModifyEditStylesEx(uint32_t dwStylesExAdded,
-                                     uint32_t dwStylesExRemoved);
+  FX_BOOL CanUndo();
+  FX_BOOL CanRedo();
+  FX_BOOL Undo();
+  FX_BOOL Redo();
+  FX_BOOL CanCopy();
+  FX_BOOL CanCut();
+  FX_BOOL CanSelectAll();
+  FX_BOOL Copy(CFX_WideString& wsCopy);
+  FX_BOOL Cut(CFX_WideString& wsCut);
+  FX_BOOL Paste(const CFX_WideString& wsPaste);
+  FX_BOOL SelectAll();
+  FX_BOOL Delete();
+  FX_BOOL DeSelect();
+  FWL_ERR GetBBox(CFX_RectF& rect);
+  FWL_ERR SetEditLimit(int32_t nLimit);
+  FWL_ERR ModifyEditStylesEx(uint32_t dwStylesExAdded,
+                             uint32_t dwStylesExRemoved);
 
  public:
   IFWL_DateTimeEdit* GetDataTimeEdit();