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_CBwinUnclick
Define a callback on unclick event. The unclick event should always received by the window which received the corresponding click event, even if the cursor is not over the window any more. However, on Windows, some unclick events can be lost.Parameters
ObjWin _CBwinUnclick ( ObjWin _win_ fun [ObjWin u0 I I I] u1 _callback_ u0 _user_ )
Return value
_win_ any window _callback_ callback on unclick event (supplemental parameters are x,y coordinates and button number) _user_ user parameter
same window