Question

我试图在隐藏模式下使用process.start打开简单的.net exe / notepad.exe。我需要稍后使用进程句柄使application.exe在一段时间后显示它。

只能在WindowStyle.Minimized，WindowStyle.Maximized，WindowStyle.Normal中获取句柄。在隐藏的风格中，它总是给我0。

如何在不使用Thread.Sleep的情况下获取句柄。它需要我们等待几秒钟才能得到处理。根据其性能（大量数据），某些exe需要更多的等待时间。

public static void LaunchExe()
{
    var proc = new Process
    {
        StartInfo =
        {
            FileName = "Notepad.exe", //or any simple .net exe
            WindowStyle = ProcessWindowStyle.Hidden
        }
    };

    proc.Start();

    proc.WaitForInputIdle(800); //is it possible to avoid this.
    Thread.Sleep(3000); //is it possible to avoid this.

    Console.WriteLine("handle {0}", proc.MainWindowHandle);


    //ShowWindowAsync(proc.MainWindowHandle, 1); //planned to use, to make it visible.
}

Answer 1

您可以这样做：

        IntPtr ptr = IntPtr.Zero;
        while ((ptr = proc.MainWindowHandle) == IntPtr.Zero)
        { proc.WaitForInputIdle(1 * 60000); Thread.Sleep(10); }   // (1*60000 = 1min, will give up after 1min)

这样你就不会再浪费时间了。

您无法获得隐藏进程的句柄。

According to MS: A process has a main window associated with it only if the process has a graphical interface. If the associated process does not have a main window, the MainWindowHandle value is zero. The value is also zero for processes that have been hidden, that is, processes that are not visible in the taskbar.

我认为你唯一的选择是正常启动，获取句柄，然后将其隐藏起来这可能会导致一些闪烁，但它应该工作。为了减轻闪烁，你可以把它开始最小化......

带有WindowStyle.Hidden的System.Diagnostics.Process.Start不会返回句柄

1 个答案: