Convert FWL_ERR into an enum class.

xfa/fwl/basewidget/fwl_tooltipctrlimp.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_TOOLTIPCTRLIMP_H_
 #define XFA_FWL_BASEWIDGET_FWL_TOOLTIPCTRLIMP_H_
 
 #include "xfa/fwl/core/fwl_formimp.h"
 #include "xfa/fwl/core/fwl_widgetimp.h"
 #include "xfa/fwl/core/ifwl_timer.h"
 
 class CFWL_WidgetImpProperties;
 class IFWL_Widget;
 class CFWL_ToolTipImpDelegate;
 
 class CFWL_ToolTipImp : public CFWL_FormImp {
  public:
   CFWL_ToolTipImp(const CFWL_WidgetImpProperties& properties,
                   IFWL_Widget* pOuter);
   virtual ~CFWL_ToolTipImp();
-  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 void SetStates(uint32_t dwStates, FX_BOOL bSet);
-  virtual FWL_ERR GetClientRect(CFX_RectF& rect);
-  FWL_ERR SetAnchor(const CFX_RectF& rtAnchor);
-  FWL_ERR Show();
-  FWL_ERR Hide();
+  virtual FWL_Error GetClientRect(CFX_RectF& rect);
+  void SetAnchor(const CFX_RectF& rtAnchor);
+  void Show();
+  void Hide();
 
  protected:
   void DrawBkground(CFX_Graphics* pGraphics,
                     IFWL_ThemeProvider* pTheme,
                     const CFX_Matrix* pMatrix);
   void DrawText(CFX_Graphics* pGraphics,
                 IFWL_ThemeProvider* pTheme,
                 const CFX_Matrix* pMatrix);
   void UpdateTextOutStyles();
   void RefreshToolTipPos();
@@ skipping 15 matching lines @@
   FWL_HTIMER m_hTimerHide;
   CFWL_ToolTipTimer* m_pTimer;
   CFWL_ToolTipTimer m_TimerShow;
   CFWL_ToolTipTimer m_TimerHide;
   friend class CFWL_ToolTipImpDelegate;
   friend class CFWL_ToolTipTimer;
 };
 class CFWL_ToolTipImpDelegate : public CFWL_WidgetImpDelegate {
  public:
   CFWL_ToolTipImpDelegate(CFWL_ToolTipImp* pOwner);
-  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
-  FWL_ERR OnProcessEvent(CFWL_Event* pEvent) override;
-  FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
-                       const CFX_Matrix* pMatrix = NULL) override;
+  void OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnProcessEvent(CFWL_Event* pEvent) override;
+  void OnDrawWidget(CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix = NULL) override;
 
  protected:
   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);
   void OnKeyDown(CFWL_MsgKey* pMsg);
   CFWL_ToolTipImp* m_pOwner;
 };
 
 #endif  // XFA_FWL_BASEWIDGET_FWL_TOOLTIPCTRLIMP_H_