Attempt to fix some -Woverloaded-virtual warnings.

fpdfsdk/include/pdfwindow/PWL_IconList.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 _PWL_IconList_H_
 #define _PWL_IconList_H_
 
 class IPWL_IconList_Notify;
@@ skipping 54 matching lines @@
         void                                                            SetListData(FX_INT32 nItemIndex, void* pData);
         void                                                            SetListIcon(FX_INT32 nItemIndex, FX_INT32 nIconIndex);
         void                                                            SetListString(FX_INT32 nItemIndex, const CFX_WideString& str);
         void                                                            SetIconFillColor(const CPWL_Color& color);
         CFX_WideString                                          GetListString(FX_INT32 nItemIndex) const;
         IPWL_IconList_Notify*                           GetNotify() const;
         void                                                            ScrollToItem(FX_INT32 nItemIndex);
 
 protected:
         virtual void                                            CreateChildWnd(const PWL_CREATEPARAM & cp);
-        virtual FX_BOOL                                         OnLButtonDown(const CPDF_Point & point);
-        virtual FX_BOOL                                         OnLButtonUp(const CPDF_Point & point);
-        virtual FX_BOOL                                         OnMouseMove(const CPDF_Point & point);
-        virtual FX_BOOL                                         OnKeyDown(FX_WORD nChar);
+        virtual FX_BOOL                                         OnLButtonDown(const CPDF_Point & point, FX_DWORD nFlag);
+        virtual FX_BOOL                                         OnLButtonUp(const CPDF_Point & point, FX_DWORD nFlag);
+        virtual FX_BOOL                                         OnMouseMove(const CPDF_Point & point, FX_DWORD nFlag);
+        virtual FX_BOOL                                         OnKeyDown(FX_WORD nChar, FX_DWORD nFlag);
 
 private:
         CPWL_IconList_Item*                                     GetListItem(FX_INT32 nItemIndex) const;
         void                                                            SelectItem(FX_INT32 nItemIndex, FX_BOOL bSelect);
         FX_INT32                                                        FindItemIndex(const CPDF_Point& point);
         
         FX_BOOL                                                         m_nSelectIndex;
         IPWL_IconList_Notify*                           m_pNotify;
         FX_BOOL                                                         m_bEnableNotify;
         FX_BOOL                                                         m_bMouseDown;
         FX_INT32                                                        m_nListCount;
 };
 
 class PWL_CLASS CPWL_IconList : public CPWL_Wnd
 {
 public:
         CPWL_IconList(FX_INT32 nListCount);
         virtual ~CPWL_IconList();
 
-        virtual FX_BOOL                                         OnMouseWheel(short zDelta, const CPDF_Point & point);
+        virtual FX_BOOL                                         OnMouseWheel(short zDelta, const CPDF_Point & point, FX_DWORD nFlag);
 
         void                                                            SetSelect(FX_INT32 nIndex);
         void                                                            SetTopItem(FX_INT32 nIndex);
         FX_INT32                                                        GetSelect() const;
         void                                                            SetNotify(IPWL_IconList_Notify* pNotify);
         void                                                            EnableNotify(FX_BOOL bNotify);
         void                                                            SetListData(FX_INT32 nItemIndex, void* pData);
         void                                                            SetListIcon(FX_INT32 nItemIndex, FX_INT32 nIconIndex);
         void                                                            SetListString(FX_INT32 nItemIndex, const CFX_WideString& str);
         void                                                            SetIconFillColor(const CPWL_Color& color);
         CFX_WideString                                          GetListString(FX_INT32 nItemIndex) const;
 
 protected:
         virtual void                                            OnCreated();
         virtual void                                            RePosChildWnd();
         virtual void                                            CreateChildWnd(const PWL_CREATEPARAM & cp);
         
         virtual void                                            OnNotify(CPWL_Wnd* pWnd, FX_DWORD msg, FX_INTPTR wParam = 0, FX_INTPTR lParam = 0);
 
 private:
         CPWL_IconList_Content*                          m_pListContent;
         FX_INT32                                                        m_nListCount;
 };
  
 #endif //_PWL_IconList_H_