Added middle mouse event macros to wxListCtrl doc; added wxCreateGreyedImage

and attempt to show disabled buttons in wxUniversal wxToolBar


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14400 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/tbarbase.h

@@ -30,6 +30,7 @@
 
 class WXDLLEXPORT wxToolBarBase;
 class WXDLLEXPORT wxToolBarToolBase;
+class WXDLLEXPORT wxImage;
 
 // ----------------------------------------------------------------------------
 // constants
@@ -475,6 +476,9 @@ private:
     DECLARE_CLASS(wxToolBarBase)
 };
 
+// Helper function for creating the image for disabled buttons
+bool wxCreateGreyedImage(const wxImage& in, wxImage& out) ;
+
 #endif // wxUSE_TOOLBAR
 
 #endif