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即使用户单击另一个最大化的应用程序，也确保WPF窗口始终处于最佳状态

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我试图确保我的WPF窗口保持在顶部，只要它是打开的 . 它作为一个弹出设置为TopMost = true，并调用win32 SetWindowPos为TOPMOST . 首次打开时，它会显示在桌面上另一个正在运行的应用程序的顶部 - 最大化与否 .

如果用户激活或使用应用程序中的窗口，则会失去焦点并消失 .

我想到了操纵其他应用程序窗口，将其设置为较低的z索引 . 如何找到应用程序窗口？如何遍历所有窗口？ （这个问题仍然存在，即使它不是正确的方法） .

我将使用SetWindowPos，GetForegroundWindow，GetForegroundWindow，GetDesktopWindow等 .

我怀疑，只要用户点击他们的应用程序，它仍将无关紧要，我正在咆哮错误的树 .

目前，我的应用程序是一个黑盒子，我无法以其他方式处理它，例如，定期发送我的应用程序以进行聚焦 .

我还想过有一个长时间运行的后台线程，它定期关注我的WPF弹出窗口，但需要观察资源和处理器 .

亲切的问候，

wpf winapi

1 回答

  • 0

    试试这种方法：

    public partial class Window1 : System.Windows.Window
   {
      private System.Windows.Forms.NotifyIcon trayNotifyIcon;
      private System.Windows.Forms.ContextMenuStrip contextMenuStrip;
      private System.Windows.Forms.ToolStripMenuItem exitMenu;
      private bool isAppExiting = false;



      public Window1()
      {        
         InitializeComponent();    

         this.Topmost = true;
         //Create an instance of the NotifyIcon Class
         trayNotifyIcon = new System.Windows.Forms.NotifyIcon();

         // This icon file needs to be in the bin folder of the application
         trayNotifyIcon.Icon = Properties.Resources.MagicRoler_Application;

         //show the Tray Notify Icon
         trayNotifyIcon.Visible = true;
         trayNotifyIcon.DoubleClick += new EventHandler(trayNotifyIcon_DoubleClick);

         //Create a object for the context menu
         contextMenuStrip = new System.Windows.Forms.ContextMenuStrip();

         //Add the Menu Item to the context menu
         System.Windows.Forms.ToolStripMenuItem mnuExit = new System.Windows.Forms.ToolStripMenuItem();
         mnuExit.Text = "Exit";
         mnuExit.Click += new EventHandler(mnuExit_Click);
         contextMenuStrip.Items.Add(mnuExit);

         //Add the Context menu to the Notify Icon Object
         trayNotifyIcon.ContextMenuStrip = contextMenuStrip;



      }    




       void mnuExit_Click(object sender, EventArgs e)
        {
            isAppExiting = true;
            this.Close();
            trayNotifyIcon.Visible = false;
        } 

       private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            //When the application is closed, check wether the application is 
            //exiting from menu or forms close button
            if (!isAppExiting)
            {
                //if the forms close button is triggered, cancel the event and hide the form
                //then show the notification ballon tip
                e.Cancel = true;
                this.Hide();
                trayNotifyIcon.BalloonTipIcon = System.Windows.Forms.ToolTipIcon.Info;
                trayNotifyIcon.BalloonTipTitle = "Application";
                trayNotifyIcon.BalloonTipText = "Application is accessible through System Tray";
                trayNotifyIcon.ShowBalloonTip(400);
            }
        }

       private void Window_StateChanged(object sender, EventArgs e)
       {
          switch (this.WindowState)
          {
             case WindowState.Maximized:               
                this.Visibility = Visibility.Visible;               
                break;
             case WindowState.Normal:
                this.Visibility = Visibility.Visible;               
                break;
             case WindowState.Minimized:
                this.WindowState = WindowState.Normal;
                this.Visibility = Visibility.Hidden;                
                break;
          } 
       }

       void trayNotifyIcon_DoubleClick(object sender, EventArgs e)
       {
          switch (this.Visibility)
          {
             case Visibility.Collapsed:
             case Visibility.Hidden:
                this.Visibility = Visibility.Visible;               
                break;
             case Visibility.Visible:
                this.Visibility = Visibility.Hidden;               
                break;
          }
       }


   }
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