uwp

问题 I am trying to access Hid (USB) devices connected to my computer on UWP. I have no problem enumerating the devices and talking to them through Windows API calls in .NET Core. In UWP, I can enumerate the devices, but when I call HidD_GetPreparsedData with the same device (https://msdn.microsoft.com/en-us/library/windows/hardware/ff539679(v=vs.85).aspx), it returns false. I'm thinking that because UWP has its own HID library, I'm supposed to use that, but I'm hoping to reuse my existing code.

问题 I am developing a solution in Winforms and Console windows. when i call the following line, the browser opens successfully: System.Diagnostics.Process.Start("http://www.google.com"); but how can i confirm that it opened successfully? I was using this line in UWP which returns the status of the opening but it doesn't work in the background var success = await Windows.System.Launcher.LaunchUriAsync(uri); Is there a way to confirm that the link has launched as the one in UWP? 来源： https:/

问题 I am developing a solution in Winforms and Console windows. when i call the following line, the browser opens successfully: System.Diagnostics.Process.Start("http://www.google.com"); but how can i confirm that it opened successfully? I was using this line in UWP which returns the status of the opening but it doesn't work in the background var success = await Windows.System.Launcher.LaunchUriAsync(uri); Is there a way to confirm that the link has launched as the one in UWP? 来源： https:/

问题 In order to make a UWP App act like an HTTP server, restup does the job. But the problem is that it does not provide an HTTP server that works even after the app is closed. In order to achieve this, a background task with SocketActivityTrigger has to be created and the socket ownership of StreamSocketListener has to be transferred to the socket broker so that the background task is triggered when a request comes (as explained here). And here is an example for an app that connects to a socket

问题 I am using for a UWP app the FileInformationFactory to retrieve a Virtualized vector of files object which are cast to a FileInformation and displayed in a GridView . I want to query a folder on a SD card plugged onto my laptop and compare the virtualization of the GridView when this folder is in a FullyIndexed location, such as my Desktop. This SD card has a folder containing 15,000 text files of zero bytes. Each file is named x.txt where x runs from 1-15000 (this can be generated in a

问题 I need to add multiple Run elements to a TextBlock . Each Run paragraph must be within the same TextBlock (to allow for selecting multiple paragraphs). However, I also need to find the height of each Run , and set the height if necessary. Because Run does not inherit from FrameworkElement , Height and ActualHeight are not available properties. On the other hand, Run only allows children that can go in an InlineCollection (which does not include anything inheriting from FrameworkElement ).

问题 Using the Live Property Explorer I can see the background colour of the HamburgerMenu control is DimGray or #FF2B2B2B depending on the Light/Dark theme selection but where do those colours inherit their value from please? I would like to use those same colours for the PageHeader background colour rather than the CustomColor (which is SteelBlue by default in the template). In the Custom.xaml resource dictionary, if I comment out the style targeting the PageHeader control in the "Light"

问题 The .AddAsync(driveItem) in the following code never returns. Could anyone shed some light on this? IPublicClientApplication publicClientApplication = PublicClientApplicationBuilder .Create(App.ClientId) .Build(); DeviceCodeProvider authProvider = new DeviceCodeProvider( publicClientApplication, new string[] { "Files.ReadWrite.All" }); GraphServiceClient graphClient = new GraphServiceClient(authProvider); DriveItem driveItem = new DriveItem { Name = "Foo", Folder = new Folder { },

问题 To install the TeachingTip-control in my UWP app, I've done the following stepts: installed Microsoft.UI.Xaml package via Nuget in my project Added <XamlControlsResources xmlns = "using:Microsoft.UI.Xaml.Controls" /> into App.xaml . Imported Namespace xmlns:controls="using:Microsoft.UI.Xaml.Controls" I implemented the TeachingTip -control as follows: <Button x:Name="BackButton" Background="{x:Null}" Content="Back" Click="BackButton_Click"> <Button.Resources> <controls:TeachingTip x:Name=

问题 I have implemented the structure that is rotating continuously in clockwise direction and now want to implement small circle attached along with it which should also rotate along the same direction in which pointed structure is rotating. Code for that are given below. XAML <Grid Name="mainGridView"> <Grid.Background> <ImageBrush ImageSource="Assets/info_bg.png"/> </Grid.Background> <Grid.RowDefinitions> <RowDefinition x:Name="rowDefSubjectHeadingGrid" Height="1*"/> <RowDefinition x:Name=