2

Win32 の user32.dll を利用して、C# でウィンドウをフォアグラウンドに強制的に表示するいくつかの方法について読みました。

1 つの状況を除いて、これらは完全に機能します。Windows 8 では、スタート メニューまたは Windows ストア アプリのいずれかがフォアグラウンドにある場合、これらは失敗します。

ただし、スタートメニューがフォアグラウンドにある場合にのみ、これを機能させる必要があります。これを達成するための隠された方法はありますか?

4

1 に答える 1

2
            DispatcherHelper.CheckBeginInvokeOnUI(async () =>
            {
                try
                {  
                    if (!this.IsActive)
                    {
                        //pressing windows button
                        InputSimulator.SimulateKeyPress(VirtualKeyCode.LWIN);
                    }
                    await Task.Delay(1000);

                    ApplicationRunningHelper.GetCurrentProcessOnFocus();
                }
                catch (Exception ex)
                {
                 ...
                }
            });

 public static class ApplicationRunningHelper
    {
        [DllImport("user32.dll")]
        private static extern bool SetForegroundWindow(IntPtr hWnd);

        [DllImport("user32.dll")]
        private static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);

        [DllImport("user32.dll")]
        private static extern bool IsIconic(IntPtr hWnd);

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

        // When you don't want the ProcessId, use this overload and pass 
        // IntPtr.Zero for the second parameter
        [DllImport("user32.dll")]
        public static extern uint GetWindowThreadProcessId(IntPtr hWnd, IntPtr ProcessId);

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

        /// The GetForegroundWindow function returns a handle to the 
        /// foreground window.
        [DllImport("user32.dll")]
        public static extern IntPtr GetForegroundWindow();

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

        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool BringWindowToTop(IntPtr hWnd);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool BringWindowToTop(HandleRef hWnd);

        [DllImport("user32.dll")]
        public static extern bool ShowWindow(IntPtr hWnd, uint nCmdShow);

        //one source
        private static int SW_HIDE = 0;
        private static int SW_SHOWNORMAL = 1;
        private static int SW_SHOWMINIMIZED = 2;
        private static int SW_SHOWMAXIMIZED = 3;
        private static int SW_SHOWNOACTIVATE = 4;
        private static int SW_RESTORE = 9;
        private static int SW_SHOWDEFAULT = 10;

        //other source
        private static int SW_SHOW = 5;

        /// <summary>
        /// check if current process already running. if runnung, set focus to 
        /// existing process and returns true otherwise returns false.
        /// </summary>
        /// <returns></returns>
        public static bool GetCurrentProcessOnFocus()
        {
            try
            {
                Process me = Process.GetCurrentProcess();
                Process[] arrProcesses = Process.GetProcessesByName(me.ProcessName);
                IntPtr hWnd = arrProcesses[0].MainWindowHandle;
                ForceForegroundWindow(hWnd);
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }

        public static void ForceForegroundWindow(IntPtr hWnd)
        {
            uint foreThread = GetWindowThreadProcessId(GetForegroundWindow(), IntPtr.Zero);
            uint appThread = GetCurrentThreadId();
            const uint SW_SHOW = 5;

            if (foreThread != appThread)
            {
                AttachThreadInput(foreThread, appThread, true);
                BringWindowToTop(hWnd);
                ShowWindow(hWnd, SW_SHOW);
                AttachThreadInput(foreThread, appThread, false);
            }
            else
            {
                BringWindowToTop(hWnd);
                ShowWindow(hWnd, SW_SHOW);
            }
        }
    }
于 2013-08-05T12:17:09.510 に答える