C# user32.dll找窗口时，使用GetClass方法解决 【带有系统自动编译的窗体类后缀名】 问题

        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);

 StringBuilder sb = new StringBuilder(256);
                GetClassName(hMainWnd, sb,sb.Capacity);//WindowsForms10.STATIC.app.0.3598b65_r16_ad1 来截取后面系统编译生成的后缀

string suffix = string.IsNullOrEmpty(sb.ToString()) ? "" : sb.ToString().Replace("WindowsForms10.Window.8.app","");//之后按 已确定窗口类+后缀 查找