WebBrowser shortcuts not working in PowerPoint add-in… but WebBrowserShortcutsEnabled is true

问题

I'm building a powerpoint add-in that is going to be based around an embedded browser. For some reason, though, the standard shortcuts don't work. The WebBrowserShortcutsEnabled property is set to true (though I even got as far as trying setting it to false in case I was in backwards world). Stripping it down to the bare bones, my repro steps are:

• Create a new project, selecting the PowerPoint 2013 Add-in project type
• Add a new User Control to the project
• Add a WebBrowser to that control, dragging it from the Toolbox
• Set the URL on that WebBrowser to e.g. google in the properties panel

• Add this code to the ThisAddIn_Startup method, so the panel displays immediately:

  private void ThisAddIn_Startup(object sender, System.EventArgs e) {
      var ctrl = new UserControl1();
      var ctp = this.CustomTaskPanes.Add(ctrl, "test");
      ctp.Visible = true;
  }
  

Typing in the WebBrowser inside PowerPoint works fine, but Ctrl+X/C/V, Del, Tab etc. all have no effect.

I've tried overriding the OnKeyPress method on the web browser, as well as adding a PreviewKeyDownEventHandler, but breakpoints in both of those methods never got hit. I've also verified that WebBrowserShortcutsEnabled is still true at run-time and hasn't somehow been changed.

I'm beginning to suspect that it might be an environment issue, but I'm at a loss as to what might the root cause. I'm running Windows 8.1, VS 2012 and PowerPoint 2013, targeting .NET 4.5. I also tried installing the same basic plugin on PowerPoint 2010 on Windows 7 with the same result.

Has anyone got any insight into what might be going wrong for me?

Thanks

回答1:

It would appear that putting the Web Browser inside a Windows Form, and displaying it as a modal window, rather than using a Custom Task Pane makes the shortcuts work as expected.

来源：https://stackoverflow.com/questions/19539369/webbrowser-shortcuts-not-working-in-powerpoint-add-in-but-webbrowsershortcuts