Convert FWL_ERR into an enum class.

xfa/fwl/lightwidget/cfwl_tooltip.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_LIGHTWIDGET_CFWL_TOOLTIP_H_
 #define XFA_FWL_LIGHTWIDGET_CFWL_TOOLTIP_H_
 
 #include "xfa/fwl/basewidget/ifwl_tooltip.h"
 #include "xfa/fwl/lightwidget/cfwl_widget.h"
 
 class CFWL_ToolTip : public CFWL_Widget {
  public:
   static CFWL_ToolTip* Create();
-  FWL_ERR Initialize(const CFWL_WidgetProperties* pProperties = NULL);
-  FWL_ERR GetCaption(CFX_WideString& wsCaption);
-  FWL_ERR SetCaption(const CFX_WideStringC& wsCaption);
-  int32_t GetInitialDelay();
-  int32_t SetInitialDelay(int32_t nDelayTime);
-  int32_t GetAutoPopDelay();
-  int32_t SetAutoPopDelay(int32_t nDelayTime);
-  CFX_DIBitmap* GetToolTipIcon();
-  FWL_ERR SetToolTipIcon(CFX_DIBitmap* pBitmap);
-  CFX_SizeF GetToolTipIconSize();
-  FWL_ERR SetToolTipIconSize(CFX_SizeF fSize);
-  FWL_ERR SetAnchor(const CFX_RectF& rtAnchor);
-  FWL_ERR Show();
-  FWL_ERR Hide();
+
   CFWL_ToolTip();
   virtual ~CFWL_ToolTip();
 
+  FWL_Error Initialize(const CFWL_WidgetProperties* pProperties = nullptr);
+
+  void GetCaption(CFX_WideString& wsCaption);
+  void SetCaption(const CFX_WideStringC& wsCaption);
+
+  int32_t GetInitialDelay();
+  void SetInitialDelay(int32_t nDelayTime);
+
+  int32_t GetAutoPopDelay();
+  void SetAutoPopDelay(int32_t nDelayTime);
+
+  CFX_DIBitmap* GetToolTipIcon();
+  void SetToolTipIcon(CFX_DIBitmap* pBitmap);
+  CFX_SizeF GetToolTipIconSize();
+  void SetToolTipIconSize(CFX_SizeF fSize);
+
+  void SetAnchor(const CFX_RectF& rtAnchor);
+  void Show();
+  void Hide();
+
  protected:
   class CFWL_ToolTipDP : public IFWL_ToolTipDP {
    public:
     CFWL_ToolTipDP();
-    FWL_ERR GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption);
+    FWL_Error GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption);
     int32_t GetInitialDelay(IFWL_Widget* pWidget);
     int32_t GetAutoPopDelay(IFWL_Widget* pWidget);
     CFX_DIBitmap* GetToolTipIcon(IFWL_Widget* pWidget);
     CFX_SizeF GetToolTipIconSize(IFWL_Widget* pWidget);
     CFX_RectF GetAnchor();
     CFX_WideString m_wsCaption;
     int32_t m_nInitDelayTime;
     int32_t m_nAutoPopDelayTime;
     CFX_DIBitmap* m_pBitmap;
     CFX_SizeF m_fIconSize;
     CFX_RectF m_fAnchor;
   };
   CFWL_ToolTipDP m_tooltipData;
 };
 
 #endif  // XFA_FWL_LIGHTWIDGET_CFWL_TOOLTIP_H_