原文參照林大佬的博客WPF 讓窗口激活做爲前臺最上層窗口的方法html
我只提供下,我使用的代碼post
[DllImport("user32.dll")] private static extern IntPtr GetForegroundWindow(); [DllImport("user32.dll")] private static extern uint GetWindowThreadProcessId(IntPtr hWnd, IntPtr ProcessId); [DllImport("user32.dll")] private static extern bool AttachThreadInput(uint idAttach, uint idAttachTo, bool fAttach); [DllImport("user32.dll")] public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags); public static void SetWindowToForegroundWithAttachThreadInput(Window window) { var interopHelper = new WindowInteropHelper(window); var thisWindowThreadId = GetWindowThreadProcessId(interopHelper.Handle, IntPtr.Zero); var currentForegroundWindow = GetForegroundWindow(); var currentForegroundWindowThreadId = GetWindowThreadProcessId(currentForegroundWindow, IntPtr.Zero); AttachThreadInput(currentForegroundWindowThreadId, thisWindowThreadId, true); window.Show(); window.Activate(); // 去掉和其餘線程的輸入連接 AttachThreadInput(currentForegroundWindowThreadId, thisWindowThreadId, false); // 用於踢掉其餘的在上層的窗口 window.Topmost = true; window.Topmost = false; }