Question

我正在尝试在我的.net应用程序（主要是视频查看软件）中托管.exe但是某些应用程序不允许我使用他们的菜单或某些控件。有没有人之前有过这个问题或者为什么会发生这种问题？

以下是我托管应用程序的代码：

    #region Methods/Consts for Embedding a Window
    [DllImport("user32.dll", EntryPoint = "GetWindowThreadProcessId", SetLastError = true,
         CharSet = CharSet.Unicode, ExactSpelling = true,
         CallingConvention = CallingConvention.StdCall)]
    private static extern long GetWindowThreadProcessId(long hWnd, long lpdwProcessId);

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

    [DllImport("user32.dll", SetLastError = true)]
    private static extern long SetParent(IntPtr hWndChild, IntPtr hWndNewParent);

    [DllImport("user32.dll", EntryPoint = "GetWindowLongA", SetLastError = true)]
    private static extern long GetWindowLong(IntPtr hwnd, int nIndex);

    [DllImport("user32.dll")]
    static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

    [DllImport("user32.dll", SetLastError = true)]
    private static extern long SetWindowPos(IntPtr hwnd, long hWndInsertAfter, long x, long y, long cx, long cy, long wFlags);

    [DllImport("user32.dll", SetLastError = true)]
    private static extern bool MoveWindow(IntPtr hwnd, int x, int y, int cx, int cy, bool repaint);

    [DllImport("user32.dll", EntryPoint = "PostMessageA", SetLastError = true)]
    private static extern bool PostMessage(IntPtr hwnd, uint Msg, int wParam, int lParam);

    private const int SWP_NOOWNERZORDER = 0x200;
    private const int SWP_NOREDRAW = 0x8;
    private const int SWP_NOZORDER = 0x4;
    private const int SWP_SHOWWINDOW = 0x0040;
    private const int WS_EX_MDICHILD = 0x40;
    private const int SWP_FRAMECHANGED = 0x20;
    private const int SWP_NOACTIVATE = 0x10;
    private const int SWP_ASYNCWINDOWPOS = 0x4000;
    private const int SWP_NOMOVE = 0x2;
    private const int SWP_NOSIZE = 0x1;
    private const int GWL_STYLE = (-16);
    private const int WS_VISIBLE = 0x10000000;
    private const int WM_CLOSE = 0x10;
    private const int WS_CHILD = 0x40000000;
    private const int WS_MAXIMIZE = 0x01000000;
    #endregion

    #region Variables
    private IntPtr hostedProcessHandle;
    private Process hostedProcess = null;
    private ProcessStartInfo hostedPSI = new ProcessStartInfo();
    #endregion

    //Helper method to start a process contained within the form
    private void HostProcess(string processPath)
    {
        //Start the process located at processPath
        hostedPSI.FileName = processPath;
        hostedPSI.Arguments = "";
        hostedPSI.WindowStyle = ProcessWindowStyle.Maximized;
        hostedProcess = System.Diagnostics.Process.Start(hostedPSI);

        //Stop watch is used to calculate time out period.
        Stopwatch sw = new Stopwatch();
        sw.Start();
        //Loop to aquire application handle. Exit loop if the time out period is past.
        do
        {
            hostedProcessHandle = hostedProcess.MainWindowHandle;
            if (sw.ElapsedMilliseconds > 10000) throw new TimeoutException();
        } while (hostedProcessHandle == new IntPtr(0));

        //Host the process in the forms panel.
        SetParent(hostedProcessHandle, this.panel1.Handle);
        SetWindowLong(hostedProcessHandle, GWL_STYLE, WS_VISIBLE + WS_MAXIMIZE);
        MoveWindow(hostedProcessHandle, 10, 10, this.panel1.Width - 20, this.panel1.Height - 20, true);

    }

    private void CloseHostedProcess()
    {
        hostedProcess.Kill();
    }

以下是托管VLC的测试应用程序的屏幕截图，您看到的一些菜单和按钮显示为灰色且无法正常工作：

这不仅仅是VLC的问题 - 我在托管其他应用程序时也看到了这个问题。

只是一个更新。如果我右键点击VLC - ＆gt;播放 - ＆gt;手动添加和播放视频，菜单栏再次起作用。但是底部的视频控件仍无效！滚动时它们会改变颜色，但点击它们仍然不起作用！

Answer 1

我遇到问题的原因似乎是因为TeamViewer在后台运行。我目前正试图找出为什么这会导致我的问题，但停止TeamViewer的过程似乎纠正了我的问题。

以C＃.Net形式托管进程会禁用某些进程的按钮

1 个答案: