1. changed wxIconBundle to use m_refData and COW to make copying icon bundles

fast (which was needed for 2)
2. make it possible to return wxIconBundles from wxArtProvider
3. implement Mac-specific wxArtProvider doing (2)

(modified patch 1581960)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45309 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/icon.h

@@ -29,6 +29,9 @@ public:
     {
       LoadFile(loc.GetFileName(), wxBITMAP_TYPE_ICON);
     }
+
+    wxIcon(WXHICON icon, const wxSize& size);
+
     virtual ~wxIcon();
 
     bool LoadFile(const wxString& name, wxBitmapType flags /* = wxBITMAP_TYPE_ICON_RESOURCE */ ,