边缘:进程内本机扩展和Windows.System.Launcher.LaunchFileAsync [英] Edge: In-Process native extension and Windows.System.Launcher.LaunchFileAsync

问题描述

我已经使用

I have developed an edge browser extension (native messaging) using the in-process mechanism as described here (through an activation of OnBackgroundActivated). Within OnBackgroundActivated, or to be more specific in OnAppServiceRequestReceived of the established app service connection, I am attempting to call Windows.System.Launcher.LaunchFileAsync(IStorageFile). This doesn't appear to happen on the UI-Thread (although it does work in debug mode with a debugger attached).

我面临的问题是，该应用程序没有头，因此没有CoreWindow.GetForCurrentThread().Dispatcher，也无法从Window.Current检索调度程序.

The problem that I am facing is, that the application is headless, and therefore there is no CoreWindow.GetForCurrentThread().Dispatcher, nor could I retrieve the dispatcher from Window.Current.

即使在发布模式下或未连接调试器的情况下，如何强制在UI-Thread上执行LaunchFileAsync?

How do I force LaunchFileAsync to be executed on the UI-Thread even in release mode or without a debugger attached ?

我知道我可以简单地执行以下操作:

I do know that I can simply do the following:

  await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, (async () =>
  {
    bool success = await Windows.System.Launcher.LaunchFileAsync(shortcut);
    await args.Request.SendResponseAsync(new ValueSet {
      { "message", "Launched File: " + success.ToString() }
    });
  }));

但是我的问题是要在应用程序类和OnAppServiceRequestReceived的上下文中获取Dispatcher引用.

But my problem is getting hold of the Dispatcher reference within the Application-Class and in the context of OnAppServiceRequestReceived.

如何实现?甚至有可能还是我需要完全信任的Win32桌面网桥?

How can this be achieved? Is it even possible or do I need a full-trust Win32 desktop bridge?

即使使用

CoreDispatcher dispatcher = Windows.ApplicationModel.Core.CoreApplication.MainView.Dispatcher;

在没有连接调试器的情况下不起作用.我很好奇，是否可以在没有Win32 Desktop Bridge的无头UWP应用程序中完全调用LaunchFileAsync.

does not work without a Debugger attached. I am curious as to whether calling LaunchFileAsync is possible at all in a head-less UWP app, without a Win32 Desktop Bridge.

推荐答案

您是正确的-您将需要构建完全信任的Win32 Desktop Bridge.分派器未在OnAppServiceRequestReceived上下文中公开.因此，您将无法启动您想要的任何东西.

You are correct - you will need to build a full-trust Win32 Desktop Bridge. The Dispatcher is not exposed inside the OnAppServiceRequestReceived context. So you wont be able to launch whatever you intend.

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