_hWnd = MyUser32.INSTANCE.CreateWindowExA(0, _wndClass.lpszClassName, _wndClass.lpszClassName, 0, 0, 0, 0, 0, null, null, _hinstance,
null);
MyUser32.INSTANCE.ShowWindow(_hWnd, MyUser32.SW_HIDE);
MyUser32.INSTANCE.UpdateWindow(_hWnd);
MSG msg = new MSG();
msg.size();
int ret;
do
{
ret = MyUser32.INSTANCE.GetMessageA(msg, _hWnd, 0, 0);
// System.out.println("get message "+msg);