//SetCursorPositionCallback sets the cursor position callback which is called
//when the cursor is moved. The callback is provided with the position relative
//to the upper-left corner of the client area of the window.
func (w *Window) SetCursorPositionCallback(cbfun func(w *Window, xpos float64, ypos float64)) {
if cbfun == nil {
C.glfwSetCursorPosCallback(w.data, nil)
} else {
w.fCursorPosHolder = cbfun
C.glfwSetCursorPosCallbackCB(w.data)
}
}
// SetCursorPosCallback sets the cursor position callback which is called
// when the cursor is moved. The callback is provided with the position relative
// to the upper-left corner of the client area of the window.
func (w *Window) SetCursorPosCallback(cbfun CursorPosCallback) (previous CursorPosCallback) {
previous = w.fCursorPosHolder
w.fCursorPosHolder = cbfun
if cbfun == nil {
C.glfwSetCursorPosCallback(w.data, nil)
} else {
C.glfwSetCursorPosCallbackCB(w.data)
}
panicError()
return previous
}