Description Rob Hughes 2003-03-20 17:41:56 EST

The code introduced in Control.WM_CONTEXTMENU to return if the handle does not 
match the wParam prevents the handling of context menus if the underlying 
widgets are not owned/created by the programmer.  In windows if a 
WM_CONTEXTMENU menssage is not processed by a child it propogates up the 
parent tree.  I imagine the code was introduced to prevent this behavior.  
However if the widget in which the message originates is not owned by me(i.e. 
anything that ActiveX components create) I cannot provide any sort of context 
menu because the events don't pass up my way(they do but are ignored at a 
lower level).