c++ 循环中不堵塞消息的处理方法

void CTest0318Dlg::OnBnClickedButton1()
{
	int timer = SetTimer(1, 1000, NULL);
	MSG msg;
	while (true)
	{
		if (GetMessage(&msg, NULL, 0, 0))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
		if (count == 20)
		{
			KillTimer(timer);
			break;
		}
	}
	
}


void CTest0318Dlg::OnTimer(UINT_PTR nIDEvent)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	count++;
	CString str;
	str.Format(_T("%d"), count);

	GetDlgItem(IDC_EDIT1)->SetWindowTextW(str);

	CDialogEx::OnTimer(nIDEvent);
}