... is what I noticed. I added to METHOD HandleEvent() if nMsg == WM_MOUSEMOVE if RawGetHandle( nLParam ) == ::hMouse ::MouseMove( nHiWord( nLParam ), nLoWord( nLParam ), nWParam ) return nil else return nil endif endif And also added to the window- oWnd:OnMouseMove:= {|SELF,X,Y,FLAGS|(oWnd:SetText( ...