C# 获取 .net 应用程序的活动窗口
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Get Active Window of .net application
提问by Maanu
I have an application named ProLaunch.exe. I want to get the active window in it and close it if the user is not performing any operation for the speicified period. A timer in the application will be used for this purpose.
我有一个名为 ProLaunch.exe 的应用程序。如果用户在指定时间内没有执行任何操作，我想在其中获取活动窗口并关闭它。应用程序中的计时器将用于此目的。
How can I get the active window and close it?
如何获取活动窗口并关闭它？
采纳答案by Brian
If I understand the question correctly, you can use the Win32 API GetActiveWindowfor this. This should work in both Forms and WPF apps.
如果我正确理解了这个问题，您可以为此使用 Win32 API GetActiveWindow。这应该适用于 Forms 和 WPF 应用程序。
[DllImport("user32.dll")]
static extern IntPtr GetActiveWindow();
[DllImport("user32.dll")]
public static extern int SendMessage(int hWnd, IntPtr msg, int wParam, int lParam);
public const int WM_SYSCOMMAND = 0x0112;
public const int SC_CLOSE = 0xF060;
// close the active window using API
private void FindAndCloseActiveWindow()
{
IntPtr handle=GetActiveWindow();
SendMessage(handle, WM_SYSCOMMAND, SC_CLOSE, 0);
}
