请问这两个参数有什么区别？？SM_CXFIXEDFRAME SM_CXFRAME

    x = GetSystemMetrics(SM_CXFIXEDFRAME);
    y = GetSystemMetrics(SM_CYFIXEDFRAME);
    h = GetSystemMetrics(SM_CYSIZE);
    cout << x << ":" << y << ":" << h << endl;


        x = GetSystemMetrics(SM_CXFRAME);
    y = GetSystemMetrics(SM_CYFRAME);
    h = GetSystemMetrics(SM_CYSMCAPTION);
    cout << x << ":" << y << ":" << h << endl;

SM_CXFIXEDFRAME 围绕具有标题但无法改变尺寸的窗口（通常是一些对话框）的边框的厚度
SM_CXFRAME,SM_CYFRAME 等同于SM_CXSIZEFRAME and SM_CYSIZEFRAME 可以改变大小的窗口边框，比如记事本、word软件