如何将焦点设置到另一个窗口？

Question

我有一个程序失去了重点的问题。这不是我的计划。我如何编写第二个程序，每隔1-2秒将焦点设置到该窗口？有可能做到这一点吗？

Answer 1

你可以，如果你想带一些其他程序/过程

 [DllImport("coredll.dll")] 
     static extern bool SetForegroundWindow (IntPtr hWnd); 

     private void BringToFront(Process pTemp) 
     { 
      SetForegroundWindow(pTemp.MainWindowHandle); 
     } 

Answer 2

使用间谍++或其他UI工具，以找到您想要对焦的窗口类名使用下面的Win32 API，说其：focusWindowClassName 。然后添加以下功能：

[DllImport("USER32.DLL")] 
public static extern bool SetForegroundWindow(IntPtr hWnd); 

[System.Runtime.InteropServices.DllImport("User32.dll")] 
public static extern bool ShowWindow(IntPtr handle, int nCmdShow); 

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

Then: 

IntPrt hWnd = FindWindow("focusWindowClassName", null); // this gives you the handle of the window you need. 

// then use this handle to bring the window to focus or forground(I guessed you wanted this). 

// sometimes the window may be minimized and the setforground function cannot bring it to focus so: 

/*use this ShowWindow(IntPtr handle, int nCmdShow); 
*there are various values of nCmdShow 3, 5 ,9. What 9 does is: 
*Activates and displays the window. If the window is minimized or maximized, *the system restores it to its original size and position. An application *should specify this flag when restoring a minimized window */ 

ShowWindow(hWnd, 9); 
//The bring the application to focus 
SetForegroundWindow(hWnd); 

// you wanted to bring the application to focus every 2 or few second 
// call other window as done above and recall this window again.