code: func internalGetBounds(pid int32, hwnd int) (int, int, int, int) {
  	bounds := C.get_bounds(C.uintptr(pid), C.uintptr(hwnd))
  	return int(bounds.X), int(bounds.Y), int(bounds.W), int(bounds.H)
  }
docs: // internalGetBounds get the window bounds