SetForegroundWindow 没有设置焦点

Question

嗨，我正在尝试获得应用程序的焦点，我在网上只能找到 SetForegroundWindow 方法，所以我尝试实现它，但它根本没有将焦点设置到应用程序，我还找到了一些关于它不可靠所以想问我是否做错了，或者是否有更好的方法将按键注入应用程序，谢谢！

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

private void JumpRL(object sender, EventArgs e)
{
   Process[] processlist = Process.GetProcesses();
   var name = processlist.Where(x => x.ProcessName == "RocketLeague").FirstOrDefault();
            
   SetForegroundWindow(name.MainWindowHandle);
   SendKeys.SendWait("{BS}");
}

我仔细检查了这个过程是正确的

Answer 1

所以经过长时间的在线搜索，我找到了一个article，上面有一个切换窗口的示例代码，所以我说见鬼去试试，它确实有效，它在这里切换焦点是 sn-p 希望它有帮助

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

[DllImport("user32.dll")]
public static extern IntPtr GetForegroundWindow();

[DllImport("kernel32.dll")]
public static extern uint GetCurrentThreadId();

[DllImport("user32.dll", SetLastError = true)]
public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);

[DllImport("user32.dll")]
public static extern bool AttachThreadInput(uint idAttach, uint idAttachTo, bool fAttach);

public static void SwitchWindow(IntPtr windowHandle)
        {
            if (GetForegroundWindow() == windowHandle)
                return;

            IntPtr foregroundWindowHandle = GetForegroundWindow();
            uint currentThreadId = GetCurrentThreadId();
            uint temp;
            uint foregroundThreadId = GetWindowThreadProcessId(foregroundWindowHandle, out temp);
            AttachThreadInput(currentThreadId, foregroundThreadId, true);
            SetForegroundWindow(windowHandle);
            AttachThreadInput(currentThreadId, foregroundThreadId, false);

            while (GetForegroundWindow() != windowHandle)
            {
            }
        }

在你获得焦点之后，一个简单的SendKeys.SendWait("<key>") 就像一个魅力