Way to detect window position on Mac?

I don't think you want to be mix-and-matching c/max code like that. It's certainly not likely to work the way you think it will ;-)

Since you appear to be trying so hard to get this working...

your cocoa code:

void ccGetWindowOrigin(int * x, int * y){
    NSApplication *myApp = [NSApplication sharedApplication];
    NSWindow *myWindow = [myApp keyWindow];
    NSRect myFrame = [myWindow frame];
    *x = myFrame.origin.x;
    *y = myFrame.origin.y;
};

your max code :

Extern
	Function ccGetWindowOrigin(x:int ptr, y:int ptr)
End Extern

Type TAccuratePoint
	Field X#
	Field Y#
    Function Update:TAccuratePoint()
        Local this:TAccuratePoint = new TAccuratePoint
        ccGetWindowOrigin(varptr this.X, varptr this.Y)
        return this
    End Function

End Type


...

Local p:TAccuratePoint = TAccuratePoint.Update()

...

or something like that...

:o)