如何给回焦点从控制台窗口在C＃中？ [英] How To Give Back Focus From Console Window in C#?

问题描述

我有一个用黑色的窗户控制台打开一个C＃控制台应用程序（A）。有时在启动时从另一个程序（B）中的窃取重点需要焦点

问：如何我可以给重点从 A.exe时回 B.EXE ？

  A  - >焦点 - >乙
  

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详细内容：

• b计划是不是我的，我不能做任何事情。它有一个图形用户界面，多个窗口，其中1需要重点（这可能是一个模式对话框窗口）。


• 程序一个不需要任何的焦点，它不会在交互任何方式与b方案。


• 程序A通过启动快捷方式启动并在后台基本运行（这是释放，但仍处于开发阶段，虽然，这就是为什么控制台窗口）


• 我有一些时间/最多分钟检查并给予重点回来。

解决方案

  //这应该做的伎俩...... 
 
函数[DllImport（user32.dll中）] 
公共静态外部布尔ShowWindowAsync（HandleRef的hWnd，诠释的nCmdShow）; 
函数[DllImport（user32.dll中）] 
公共静态的extern BOOL SetForegroundWindow（IntPtr的WindowHandle）; 
 
公共const int的SW_RESTORE = 9; 
 
私人无效FocusProcess（字符串PROCNAME）
 {
过程[] = objProcesses System.Diagnostics.Process.GetProcessesByName（PROCNAME）; 
如果（objProcesses.Length大于0）
 {
的IntPtr的HWND = IntPtr.Zero; 
的hWnd = objProcesses [0] .MainWindowHandle; 
 ShowWindowAsync（新HandleRef（NULL，的hWnd），SW_RESTORE）; 
 SetForegroundWindow（objProcesses [0] .MainWindowHandle）; 
} 
} 
  

I have a C# console application (A) that opens with the black windows console. Sometimes at startup it steals the focus from another program (B) that needs the focus.

Question: How can I give focus back from A.exe to B.exe ?

A -> Focus -> B

---

Details:

• Program B is not mine and I can't do anything about it. It has a GUI, multiple windows and 1 of them needs the focus (it might be a modal dialog window).
• Program A doesn't need any focus and it doesn't interact in any way with program B.
• Program A starts via Startup shortcut and runs basically in background (it is released but still in development though, that's why console window)
• I have a few moments/up to minutes to check and give the focus back.

解决方案

// this should do the trick....

[DllImport("user32.dll")]
public static extern bool ShowWindowAsync(HandleRef hWnd, int nCmdShow);
[DllImport("user32.dll")]
public static extern bool SetForegroundWindow(IntPtr WindowHandle);

public const int SW_RESTORE = 9;

private void FocusProcess(string procName)
{
    Process[] objProcesses = System.Diagnostics.Process.GetProcessesByName(procName);
    if (objProcesses.Length > 0)
    {
        IntPtr hWnd = IntPtr.Zero;
        hWnd = objProcesses[0].MainWindowHandle;
        ShowWindowAsync(new HandleRef(null,hWnd), SW_RESTORE);
        SetForegroundWindow(objProcesses[0].MainWindowHandle);
    }
}

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