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_CBwinDClick
Define a callback on double-click event

ObjWin _CBwinDClick (
ObjWin _win_
fun [ObjWin u0 I I I] u1 _callback_
u0 _user_
)
Parameters

_win_
any window
_callback_
callback on double-click event (supplemental parameters are x,y coordinates and button number)
_user_
user parameter
Return value

same window