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_ConvertScreenToWindowCoords

Converts the screen coordinates of a specified point on the screen to window control coordinates.

Prototype :

fun [ObjWin I I] [I I]

• ObjWin : a window control.
• I : the 'x' coordinate.
• I : the 'y' coordinate.

Return : [I I] the 'x' and 'y' converted coordinates, NIL otherwise

See also :

Example :

Note :