Question

我正在尝试使用以下代码关闭窗口。

但在

中收到错误

“IntPtr hWnd = PostMessage（IntPtr.Zero，WM_CLOSE，IntPtr.Zero，IntPtr.Zero）;”

在哪里提供窗口名称以便关闭??? 而且我传递的参数也存在一些问题。

  void DaemonTerminamtionHook_KeyPressed(object sender, KeyPressedEventArgs e)
{
    DaemonResult = MessageBox.Show("Are you sure, you want to Terminate Daemon?", "Terminate Daemon", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);

    if (DaemonResult == DialogResult.Yes)
    {

        IntPtr hWnd = PostMessage(IntPtr.Zero, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
        bool ret = CloseWindow(hWnd);
    }
}



static uint WM_CLOSE = 0x10;
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll", SetLastError = true)]
static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);

static bool CloseWindow(IntPtr hWnd)
{
    bool returnValue = PostMessage(hWnd, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
    if (!returnValue)
        throw new Win32Exception(Marshal.GetLastWin32Error());
    return true;
}

修改代码后，仍然没有运气。因为我是Windows新闻的新手。

    void DaemonTerminamtionHook_KeyPressed(object sender, KeyPressedEventArgs e)
    {
        DaemonResult = MessageBox.Show("Are you sure, you want to Terminate Daemon?", "Terminate Daemon", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);

        if (DaemonResult == DialogResult.Yes)
        {
            IntPtr hWnd = FindWindow(null, "DAEMON TAB BAR");
            bool ret = CloseWindow(hWnd);
        }
    }

    static bool CloseWindow(IntPtr hWnd)
    {
        //How to call it here
        return true;
    }

Answer 1

如果我正确理解您要执行的操作，则应首先使用FindWindow获取要关闭的窗口的窗口句柄。您的代码看起来像这样：

IntPtr hWnd = FindWindow(null, <WindowName>);
bool ret = CloseWindow(hWnd);

将FindWindow定义为：

[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

Answer 2

你为什么要制作讨厌的黑客，而你可以打电话给Process.CloseMainWindow()？

http://msdn.microsoft.com/en-us/library/system.diagnostics.process.closemainwindow.aspx

在c＃中使用WM_Close的问题

2 个答案: