private static async Task <Tuple <ExtendedSplashScreenContent, TaskCompletionSource <object> > > CreateExtendedSplashScreenContentAsync(Window hostWindow, AppStartInfo info)
{
// 创建创建扩展启动屏幕方法为 null。
if (info.ExtendedSplashScreen == null)
{
return(Tuple.Create <ExtendedSplashScreenContent, TaskCompletionSource <object> >(null, null));
}
ExtendedSplashScreenContent extendedSplashScreenContent = null;
TaskCompletionSource <object> extendedSplashScreenTcs = null;
await hostWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
extendedSplashScreenContent = info.ExtendedSplashScreen();
if (extendedSplashScreenContent != null)
{
extendedSplashScreenTcs = new TaskCompletionSource <object>();
EventHandler extendedSplashScreenFinishedHandler = null;
extendedSplashScreenFinishedHandler = delegate
{
extendedSplashScreenContent.Finished -= extendedSplashScreenFinishedHandler;
extendedSplashScreenTcs.SetResult(null);
};
extendedSplashScreenContent.Finished += extendedSplashScreenFinishedHandler;
}
});
return(Tuple.Create <ExtendedSplashScreenContent, TaskCompletionSource <object> >(extendedSplashScreenContent, extendedSplashScreenTcs));
}
