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我正在为游戏开发一个 Launcher 应用程序。很像 XNA 中的 XBOX Dashboard。我想在它启动的进程(游戏)退出时重新打开我的程序。通过一个简单的游戏,这是有效的:

[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool SetForegroundWindow(IntPtr hWnd);

[DllImportAttribute("User32.DLL")]
private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
private const int SW_SHOW = 5;
private const int SW_MINIMIZE = 6;
private const int SW_RESTORE = 9;

public void Run(file)
{
    ProcessStartInfo startInfo = new ProcessStartInfo(file);
    Environment.CurrentDirectory = Path.GetDirectoryName(file);
    startInfo.Verb = "runas";
    var process = Process.Start(startInfo);
    process.WaitForExit();
    ShowWindow(Game1.Handle, SW_RESTORE);
    SetForegroundWindow(Game1.Handle);
}

Game1.Handle 来自:

Handle = Window.Handle;

在 Game1 的 Load Content 方法中。

我的问题是如何在运行进程已启动的所有子进程完成后打开窗口?

就像启动器启动游戏一样。

我认为一些更高级的程序员可能知道诀窍。

提前致谢!

4

1 回答 1

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您可以使用 Process.Exited 事件

 int counter == 0;
     .....

     //start process, assume this code will be called several times
     counter++;
     var process = new Process ();
     process.StartInfo = new ProcessStartInfo(file);

     //Here are 2 lines that you need
     process.EnableRaisingEvents = true;
     //Just used LINQ for short, usually would use method as event handler
     process.Exited += (s, a) => 
    { 
      counter--;
      if (counter == 0)//All processed has exited
         {
         ShowWindow(Game1.Handle, SW_RESTORE);
        SetForegroundWindow(Game1.Handle);
         }
    }
    process.Start();

更适合游戏的方法是使用命名信号量,但我建议你从退出事件开始,然后当你了解它的工作原理后,再转到信号量

于 2013-08-09T11:57:16.557 回答