OS/2 Image processing updates

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15400 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/os2/bitmap.h

@@ -216,6 +216,8 @@ public:
     inline wxDC* GetSelectedInto() const
       { return (GetBitmapData() ? GetBitmapData()->m_pSelectedInto : (wxDC*) NULL); }
 
+    inline bool IsMono(void) const { return m_bIsMono; }
+
     // An OS/2 version that probably doesn't do anything like the msw version
     wxBitmap GetBitmapForDC(wxDC& rDc) const;
 
@@ -237,6 +239,8 @@ protected:
 private:
     bool CopyFromIconOrCursor(const wxGDIImage& rIcon);
 
+    bool                            m_bIsMono;
+
     DECLARE_DYNAMIC_CLASS(wxBitmap)
 }; // end of CLASS wxBitmap