windows-runtime

问题 There is something called projected types in WinRT. For example, in metadata, the IXamlType.UnderlyingType is defined as: TypeName UnderlyingType { get; } However when used in a C# app, it changes as follows: Type UnderlyingType { get; } My question is - is there any documentation regarding the rules, API, attributes used for such mappings? 回答1: That's correct, the language projection built into the CLR maps WinRT types to CLR types automatically. Documentation is hard to come by, especially

问题 There is something called projected types in WinRT. For example, in metadata, the IXamlType.UnderlyingType is defined as: TypeName UnderlyingType { get; } However when used in a C# app, it changes as follows: Type UnderlyingType { get; } My question is - is there any documentation regarding the rules, API, attributes used for such mappings? 回答1: That's correct, the language projection built into the CLR maps WinRT types to CLR types automatically. Documentation is hard to come by, especially

问题 Related to this question, I am trying to implement a procedure that uses the WinRT API to set the desktop wallpaper. To mimic the await functionality in C#, I am using TTask.Future (link) as outlined here and here. My implementation looks like this: class procedure TUtilityWin.SetWallpaper(AFileName: String); var lStorageFile: IStorageFile; liao_storagefile: IAsyncOperation_1__IStorageFile; lFutureTask: IFuture<IAsyncOperation_1__IStorageFile>; begin //WinRT Implementation if TUserProfile

问题 Background: I need to build a Windows Runtime Component as part of a system that's set up to use CMake to generate its build system. As a preparatory step I'm trying to build it on the command line. Starting with a bare-bones .idl file (MyType.idl) namespace NS { [default_interface] runtimeclass MyType { } } I'm trying to generate a matching .winmd file using the midlrt.exe tool. The following command line (split across several lines for readability) midlrt /metadata_dir "%WindowsSdkDir

问题 I'm following the guide at MSDN about downloading the file. So I have made a very simple download: private async void performDownload_Click(object sender, RoutedEventArgs e) { CancellationTokenSource myCts = new CancellationTokenSource(); ulong bytesReceived = await DownloadWebFile("myFile.jpg", myCts.Token); var forBreakpoint = 5; // set breakpoint here - isn't being hit on a device // some further code } public async Task<ulong> DownloadWebFile(string fileName, CancellationToken ct) { Uri

问题 I'm decoding barcodes using the built in camera, I do this with the capElement.Source.CapturePhotoToStreamAsync to capture photos from the preview. it works, but freezes the app for a brief moment, which feels very clumsy and buggy. So I'd like to this in background while at least leaving a responsive UI while processing the photos. So far I came up with this to capture the video stream: private async void ScanInBackground() { bool failedScan = true; var stream = new

问题 I've got a library consisting of two parts - One .net assembly that P/Invokes to a native 3rd party dll. In desktop mode this works just fine: However, when referencing the assembly from a Metro style app and running it, it throws a System.DllNotFoundException on the P/Invoke complaining that "Unable to load DLL 'library': The specified module could not be found." The native dll does not do anything special but only creates out-going TCP/IP connections to a server. The system cannot know this

问题 I have troubles accessing localized string resources in Portable Class Library targeting .NET 4.5. I am allowing the user to select the language on first page and have localized experience on further pages. I am trying to achieve that just by getting resource with code MyTextBloxk.Text = PasswordResetMethod_Page.Title; PasswordResetMethod_Page is the auto-generated class from the .resx Everything works fine on the WP 8.1 emulator, but when I try to deploy it to the real device I get Error :

问题 Printing Document using WinRT : 1) To Keep tracking if there are more data Or text data to print in a formatted page. This can be done using RichTextBlock and RichTextBlockOverflow like below: <RichTextBlock Foreground="Black" x:Name="textContent" FontSize="18" Grid.Row="1" Grid.ColumnSpan="2" OverflowContentTarget="{Binding ElementName=firstLinkedContainer}" IsTextSelectionEnabled="True" TextAlignment="Left" FontFamily="Segoe UI" VerticalAlignment="Top" HorizontalAlignment="Left"> <

问题 I have my ViewModels inside a PCL, because I'm developing a Windows 8.1 and Windows Phone app in parallel. I have a list of things inside my ViewModel as an ObservableCollection. I have a GridView inside a Page inside a Windows 8.1 project. I wish to incrementally load items from my list of things in my ViewModel. Normally I would implement ISupportIncrementalLoading inside a custom subclass of ObservableCollection, however, given that my ViewModel is inside a PCL, ISupportIncrementalLoading