I add some command buttons to the ToolbarControl,like the "open","Copy","Cut","Delete","Paste","New Rectangle",and so on,but when open a *.mxd file in the Axmapcontrol(I already set the buddy is axMapControl1),I can draw rectangle in the axMapControl1,but the "Copy","Cut","Delete","Paste"command button are disable,the color of this four command are gray.what's wrong with it ?The screen shots in the following: