//SetPositionCallback sets the position callback of the window, which is called
//when the window is moved. The callback is provided with the screen position
//of the upper-left corner of the client area of the window.
func (w *Window) SetPositionCallback(cbfun func(w *Window, xpos int, ypos int)) {
if cbfun == nil {
C.glfwSetWindowPosCallback(w.data, nil)
} else {
w.fPosHolder = cbfun
C.glfwSetWindowPosCallbackCB(w.data)
}
}
// SetPosCallback sets the position callback of the window, which is called
// when the window is moved. The callback is provided with the screen position
// of the upper-left corner of the client area of the window.
func (w *Window) SetPosCallback(cbfun PosCallback) (previous PosCallback) {
previous = w.fPosHolder
w.fPosHolder = cbfun
if cbfun == nil {
C.glfwSetWindowPosCallback(w.data, nil)
} else {
C.glfwSetWindowPosCallbackCB(w.data)
}
panicError()
return previous
}