XRC determines the bitmap to use according to this algorithm:
1. If there is non-empty "stock_id" property, query wxArtProvider for the
bitmap (if there is no "stock_client", use default one, which is usually
XRC determines the bitmap to use according to this algorithm:
1. If there is non-empty "stock_id" property, query wxArtProvider for the
bitmap (if there is no "stock_client", use default one, which is usually