preview

问题 Is it possible to capture the 'live' thumbnails from the Win7 taskbar? I want to display this preview (of another window) in my application, but how to extract those previews using .NET? 回答1: Yes. MSDN Magazine explains how. You can also use the Windows API Code Pack, which handles the interop for you. 回答2: There's a System.Windows.Shell namespace in .NET 4 that enables you capture thumbnails, etc. See http://blogs.msdn.com/b/usisvde/archive/2010/03/18/windows-7-taskbar-features-in-net-4.aspx

问题 In my application I need to provide the user with a preview on a progressive download (video file). In order to achieve this, I'm using VideoView component to show the content of the video (.mp4, .3gpp) which is being downloaded. The problem is that I can't access remote media via http:// or rtsp:// protocol, so I'm forced to use VideoView.setVideoPath to play local copy of the video while downloading. Unfortunately it seems like on Android devices that can't use StageFright framework (so

问题 I'm designing a native navigation drawer in Android Studio. I can't see the drawer in my preview because it is sitting left of the activity, out of range of the preview. For now I'm using a testlayout.xml file to see my changes, but a lot of times I forget to copy paste them into the right activity. Is there a way to preview the drawer layout? 回答1: If you want to be able to preview the drawer layout / navigation bar If you are following the tutorial at https://developer.android.com/training

问题 i got some issue nagging me for quite some time now. I got my custom Camera-App that shows a live Preview. Aswell i am using the FaceDetection for getting a better focus on peoples faces. When i check my taken Pictures in Gallery i can see the Rectangle correctly. The next step is to make the FaceDetection-Rectangle visible in the Live-Preview. So i decided to use a canvas that gets the coordinates from the Preview-Rectangle and transform them to coordinates that can be used by the canvas. My

问题 This is my Preview class to take a picture : it's working perfectly with many devices but Android Samsung Galaxy S4 shows me bad result => the problem that the image is stretched when preview. You can see the image below : Here is my code : class Preview extends ViewGroup implements SurfaceHolder.Callback { private final String TAG = "Preview"; SurfaceView mSurfaceView; SurfaceHolder mHolder; Camera.Size mPreviewSize; List<Camera.Size> mSupportedPreviewSizes; Camera mCamera; Preview(Context

问题 We would like to process 120 fps (or 60fps) camera preview data using Neon assembly or GPU shaders to perform a simple image processing operation (eg 3x3 convolution). We are NOT interested in displaying the image on the screen so the camera data should go directly to a SurfaceTexture. We thought we could do this using Camera2 API on a Nexus 5 using CameraConstrainedHighSpeedCaptureSession but have been unsuccessful. There is no currently functional code on the internet (at least the part we

问题 In Honeycomb some of the System apps have a "preview" of the widget when you click the "add" options on the home screen. How do I go about adding a thumbnail/preview of my widget to my application so the user can get a feel for what it looks like when adding it in Honeycomb? 回答1: If you run the android emulator against the Honeycomb sdk, you should see an app called Widget Preview, which will allow you to pick the widget to take a preview of (you will have to install your widget on the

问题 class UserPreview < ActionMailer::Preview # Accessible from http://localhost:3000/rails/mailers/notifier/welcome_email def welcome_email UserMailer.welcome_email(User.first) end end I have this simple mailer preview using Ruby on Rails 4.1. If I comment out, all of the routes in my routes.rb file and leave only this, the mailer preview works: MyTestApp::Application.routes.draw do end So obviously one of my rights is getting used before the default Rails one for mailer previews. What do I need

问题 Is there anyway at all to generate a preview of a PDF in an IE browser? I know that you could use an iframe in either Chrome or Firefox, and a blob in IE, but they both require their own code, I'm looking for something that will work cross browsers. 回答1: Finally found a solution, that generates an in-browser preview window for a PDF file that is supported by all browsers! Here's my code (I've put in an input box so that anyone could test any PDF URL): <div class="wizard-content"> <div class=

问题 How can I write or draw controls to the Windows 7 preview area using C#? For an example of what I am talking about, open Windows Media Player in Windows 7 and play a song. While the song is playing, minimize Windows Media player, then hover your mouse over the Windows Media Player icon and you will see a pause, rewind and fast forward button just below the actual Media Player preview window. How can I duplicate this kind of behavior in C#? 回答1: You're looking for Windows 7 Thumbnail Toolbars: