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#define INCL_WININPUT
 
WM_BUTTON3UP
x = (SHORT) SHORT1FROMMP(mp1);     /* horizontal position */
y = (SHORT) SHORT2FROMMP(mp1);     /* vertical position   */
 
The WM_BUTTON3UP message is sent when the user releases the right mouse
button of a three-button mouse.
 
Parameter  Description
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x          Low word of mp1. Indicates the horizontal position of the mouse
           pointer (in window coordinates).
 
y          High word of mp1. Indicates the vertical position of the mouse
           pointer (in window coordinates).
 
Return Value
 
An application should return TRUE if it processes this message.
 
See Also
 
WM_BUTTON3DBLCLK, WM_BUTTON3DOWN, WM_HITTEST
 
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