CoreWindow::GetCurrentForThread() 始终为 NULL [英] CoreWindow::GetCurrentForThread() always NULL

问题描述

我正在尝试在 Windows Phone 8 上使用 C++ 获取 CoreDispatcher，以便我可以将工作项提交到 UI 线程 Dispatcher，以便我可以更新 UI 线程上的 UI 元素.但是，当我调用 CoreWindow::GetCurrentForThread() 时，我会返回 NULL.在 文档 中，它指出WP8 支持此功能.只要我为当前窗口获取NULL，我就无法从中获取当前的Dispatcher；有谁知道如何在 WP8 上获取当前的 Dispatcher?

I'm trying to get the CoreDispatcher in C++ on Windows Phone 8 so that I can submit work items to the UI thread Dispatcher so I can update UI elements on the UI thread. However, when I call CoreWindow::GetCurrentForThread(), I get NULL back. In the documentation it states that this is supported on WP8. As long as I'm getting NULL for the current Window, I can't get the current Dispatcher from it; does anyone know how to get the current Dispatcher on WP8?

推荐答案

我用过

await CoreApplication.Views.First().Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
                {
                    //your code here
                });

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