C# ChromiumWebBrowser: Prevent control from stealing focus

问题

I'm making a program that has a Form with a ChromiumWebBrowser in it. The navigation is done automatically. When webbrowser complete it's task, I'll dispose it, create a new webbrowser, add it to form, and load a new address.

But, when the new webbrowser was created and added to form, the program jumps in front of what ever other program is in the top with focus. Example: I start my program, press the button to start its task, open notepad to type some text and my program jumps in front of it when navigating to a new site.

Even when the window is minimized, it still steals focus from other open programs.

How do I prevent it stealing focus after it is created?

回答1:

As @amaitland said, this looks like a bug.

Workarounds I've used are:

1) disable the browser. This will prevent the browser from receiving mouse/keyboard input, but it won't "grey-out" the control.

Browser1 = New CefSharp.WinForms.ChromiumWebBrowser(url)
Browser1.Enabled = False

2) Pass a callback .net function for when the page loads where you simply put the focus back to winforms by focusing on a label of your choice.

Label1.Focus()

回答2:

1. Your Form need set: this.Topmost = false; AND just set: this.BringToFront();

2. Add new browser to the form just like the function as follow:

   private ChromiumWebBrowser AddNewBrowser(FATabStripItem tabStrip, String url)
   {
       if (url == "")
       {
           url = OpenUrl;
           txtUrl.Select();
           txtUrl.Focus();
       }
       else
       {
           tabStrip.Select();
           tabStrip.Focus();
       }
       // ...
   }
   

Hope has help to you. Thanks !

来源：https://stackoverflow.com/questions/37117125/c-sharp-chromiumwebbrowser-prevent-control-from-stealing-focus