C＃关闭这个＆＃34;关闭程序＆＃34;弹出

Question

我们使用Windows桌面自动执行所有操作，并定期弹出一些第三方应用程序警告/异常框，同时我们可以检测并发送密钥代码（Enter）以关闭那些＆＃34; OK＆＃34;按钮，同样的方法可以把这些带到最前面，但关键代码（Enter，或Alt + F4）永远无法关闭它们模拟

1. 点击Enter as＆＃34;关闭程序＆＃34;突出显示为默认值。
2. Alt + F4将其关闭为窗口。



这是代码

[DllImport("User32.dll")]
static extern bool SetForegroundWindow(IntPtr hWnd);

public static void PressKey(Keys key, bool up)
{
    const int KEYEVENTF_EXTENDEDKEY = 0x1;
        const int KEYEVENTF_KEYUP = 0x2;
        if (up)
        {
            keybd_event((byte)key, 0x45, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, (UIntPtr)0);
        }
        else
        {
            keybd_event((byte)key, 0x45, KEYEVENTF_EXTENDEDKEY, (UIntPtr)0);
        }
}

Process[] pp = Process.GetProcesses();    
    ... // qualifying the right handle assign to "p", debug shows it select the popup and set forefront (with focus).
        hwnd = p.MainWindowHandle;
        SetForegroundWindow(hwnd);
        //Thread.Sleep(100);  // thought needs some time to send key code before it's fully brought to forefront, but not matter.
        PressKey(Keys.Enter, false);
        PressKey(Keys.Enter, true);
        //Thread.Sleep(100);
        PressKey(Keys.Enter, false);
        PressKey(Keys.Enter, true);
        // following not working either
        //PressKey(Keys.Alt, false);
        //PressKey(Keys.F4, false);
        //PressKey(Keys.Alt, true);
        //PressKey(Keys.F4, true);

在调试过程中，当它们被带到最前面并且键码不起作用时，手动按ENTER或Alt + F4可以正常工作。我用Google搜索并尝试了在SO中找到的任何内容。