capture

问题 I want to be able to share a variable in the containing scope between two lambda functions. I have the following: void holdAdd(const Rect& rectangle, Hold anonymousHeld, Hold anonymousFinish) { std::map<int,bool> identifierCollection; HoldFinish holdFinish = [=](const int& identifier) mutable { if (identifierCollection.count(identifier) == 0) return; identifierCollection.erase(identifier); anonymousFinish(); }; holdCollisionCollection.push_back([=](const int& identifier, const Vec2& point)

问题 Similar threads have not led me to solve the following problem. I use a local macro to specify a varlist with multiple variables and want to check whether each of the variables in this varlist exists in the dataset I use. So as to get a quick overview which variables do not exist in the dataset. I have tried the following code so far: local vlist caseid midx hidx v000-v013 v016 v021-v025 v101 v102 foreach v of local vlist { capture confirm variable `v' if !_rc { display in red "variable

问题 After extending the ScrollView class I was able to easily be notified of the scrolling in realtime. Now I need to capture the content of this scrollview in a very specific part. Let's say I want to capture the top of the screen ( matching parent width and a defined height, like 100dp). But only the content of the ScrollView and not the rest, if there is anything else on the top but not as part of the ScrollView. I tried using on the scrollview : setDrawingCacheEnabled(true); getDrawingCache

问题 Is there any gem out there that can interact with users webcam to capture video and audio and upload it to the server? 回答1: Have you heard about navigator.getUserMedia()? That could the trick. More info: http://www.html5rocks.com/en/tutorials/getusermedia/intro/ They talk about it in the Mobile Web Development course in Udacity (lesson 10). https://www.youtube.com/watch?v=j6mzYt5fJpg 回答2: Have you tried headshot ? I just tried it yesterday, but ran into some trouble with the flash player, not

问题 I want to extract some string data from a given file. File got structure such as: name, catg, {y:2006, v:1000, c:100, vt:1}, {y:2007, v:1000, c:100, vt:1},.. {..}.. . I want to extract next values: name; catg; numbers after y , v , c , vt labels; I used the next regexes: @"(?<name>\w+), (?<cat>\w+)" for extraction of the first two items; @"(?:\{y:(?<y>\d+), +v:(?<v>\d+), +c:(?<c>\d+), +vt:(?<vt>\d+)\}, ?)+" for extraction of other values enclosed in curly brackets. I concatenated those two

问题 I am writing a C program where I would like to enumerate all the capture devices in my system (in practice, I know I have three webcams plus the "integrated" microphone), recognize them and start capturing from them all at the same time. I has some success using snd_device_name_hint() to enumerate all PCM devices and then snd_device_name_get_hint() to determine the "IOID" to see if they support capture. But now, how do I open the related device with snd_pcm_open() so that I can capture? I

问题 I am running the CapWMV sample application of DirectShow.NET. It is loading a very low quality profile in Capture.cs: // Windows Media Video 8 for Dial-up Modem (No audio, 56 Kbps) // READ THE README for info about using guids Guid cat = new Guid(0x6E2A6955, 0x81DF, 0x4943, 0xBA, 0x50, 0x68, 0xA9, 0x86, 0xA7, 0x08, 0xF6); The readme says if you MUST use guids, you can find them defined in %windir%\WMSysPr9.prx. But when I load another profile, if fails, presumably because I am not connecting

问题 I am trying to access camera preview frames of Hololens in a script of a Unity application, but I have some problems. I want to access the camera preview with MediaCapture class. I know that it is posible in a UWP application but I want to do it in Unity. In the UWP application need to create a CaptureElement in the XAML page and after that to set the source of this element, like that: captureElement.source = mediaCapture; mediaCapture.StartPreviewAsync(); But in a Unity application I don't

问题 Does anyone know how to capture keystrokes for a game (i.e. using the keypad to navigate a simple ascii based game where 8 = up, 2 = down, 4 left, etc... and pressing return is not necessary, moving in a single keystroke is the goal.)? I found this code, which looks like a good idea, but is over my head. Adding comments, or sending me to an article on the subject etc, would be great help. I know a lot of people have this question. Thanks in advance? try: from msvcrt import kbhit except

问题 I am looking for a way to capture or trap the mouse in a window after it has entered that window much like a mouse is trapped in a virtual machine window until a user presses CTRL+ALT+DEL or release the mouse in some other manner. How do I make this happen in Java? Going full screen is not an option. EDIT: Here is some SSCCE for ya. This code will trap your mouse in the window. To get out you just have to within the generated frame and move directly to the close button. If you will notice