fix memory leak; allocate the DC before SetFont() is called on the status bar

[wxWidgets.git] / include / wx / msw / ole / dataobj.h

diff --git a/include/wx/msw/ole/dataobj.h b/include/wx/msw/ole/dataobj.h
index dd2d0cf5038c4f1efa3517c8e3a0d8b6a9081f21..dc7a89c2f20e38e063f6209b2ac9fd8cf42abb49 100644 (file)
--- a/include/wx/msw/ole/dataobj.h
+++ b/include/wx/msw/ole/dataobj.h
@@ -22,7 +22,7 @@ struct IDataObject;
 // wxDataObject is a "smart" and polymorphic piece of data.
 // ----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxDataObject : public wxDataObjectBase
+class WXDLLIMPEXP_CORE wxDataObject : public wxDataObjectBase
 {
 public:
     // ctor & dtor
@@ -36,21 +36,44 @@ public:
     // it is deleted, it should delete us as well
     void SetAutoDelete();
 
-    // return TRUE if we support this format in "Get" direction
+    // return true if we support this format in "Get" direction
     bool IsSupportedFormat(const wxDataFormat& format) const
         { return wxDataObjectBase::IsSupported(format, Get); }
 
-#ifdef __WXDEBUG__
+    // if this method returns false, this wxDataObject will be copied to
+    // the clipboard with its size prepended to it, which is compatible with
+    // older wx versions
+    //
+    // if returns true, then this wxDataObject will be copied to the clipboard
+    // without any additional information and ::HeapSize() function will be used
+    // to get the size of that data
+    virtual bool NeedsVerbatimData(const wxDataFormat& WXUNUSED(format)) const
+    {
+        // return false from here only for compatibility with earlier wx versions
+        return true;
+    }
+
     // function to return symbolic name of clipboard format (for debug messages)
-    static const char *GetFormatName(wxDataFormat format);
+#ifdef __WXDEBUG__
+    static const wxChar *GetFormatName(wxDataFormat format);
 
     #define wxGetFormatName(format) wxDataObject::GetFormatName(format)
 #else // !Debug
-    #define wxGetFormatName(format) ""
+    #define wxGetFormatName(format) _T("")
 #endif // Debug/!Debug
+    // they need to be accessed from wxIDataObject, so made them public,
+    // or wxIDataObject friend
+public:
+    virtual const void* GetSizeFromBuffer( const void* buffer, size_t* size,
+                                           const wxDataFormat& format );
+    virtual void* SetSizeInBuffer( void* buffer, size_t size,
+                                   const wxDataFormat& format );
+    virtual size_t GetBufferOffset( const wxDataFormat& format );
 
 private:
     IDataObject *m_pIDataObject; // pointer to the COM interface
+
+    wxDECLARE_NO_COPY_CLASS(wxDataObject);
 };
 
 #endif  //_WX_MSW_OLE_DATAOBJ_H