Hello, Otto!
It has to be something like:
#define WS_EX_CONTEXTHELP 1024
#define GWL_EXSTYLE (-20)
SetWindowLong( oWnd:hWnd, GWL_EXSTYLE, nOr( GetWindowLong( oWnd:hWnd, GWL_EXSTYLE ), WS_EX_CONTEXTHELP ) )
But for me it's also doesn' work... I can't understand the reason...