screenshot

问题 This question already has an answer here : Programmatically grab screenshots in OSX (1 answer) Closed 6 years ago . I've been trying to get a screenshot from a C++ program in MacOSX 10.8.4 and it's been impossible. I can't even get a single pixel. Is it even possible? Can somebody help me? Or at least give me some clue or link. 回答1: void captureScreen(){ CGImageRef image_ref = CGDisplayCreateImage(CGMainDisplayID()); CGDataProviderRef provider = CGImageGetDataProvider(image_ref); CFDataRef

问题 I want to open a page and grab the screen and obtain its mean color with PIL. I want to open about 100 pages so I thought a screen capture script with Python would be useful. I found several of them and I decided to use this simple one: """ A simple screen grabbing utility @author Fabio Varesano - @date 2009-03-17 """ from PIL import ImageGrab import time time.sleep(5) ImageGrab.grab().save("screen_capture.jpg", "JPEG") But I need to run this from Command Prompt which then shows on the screen

问题 I noticed another person also requested help on this. I read that post and it seems it wasn't resolved yet. I also tried changing from my code to the code in the "Screen shot in 2 clicks" Post, But implementing that in my code messed around with all my other code for some reason. At the moment, The screen shots show up perfectly in Win XP. In Vista and Win7 how ever, they show up blank unless the game is played in window mode. I hope someone out there can help us as this is the last step to

问题 I am trying to get my app (iOS, Android) to allow users to post a screenshot to facebook with a link and a description. I am able to use FB.API() to upload screenshots from my app to a user's album that Facebook autogenerated for my app, via: int width = Screen.width; int height = Screen.height; Texture2D tex = new Texture2D(width, height, TextureFormat.RGB24, false); // Read screen contents into the texture tex.ReadPixels(new Rect(0, 0, width, height), 0, 0); tex.Apply(); byte[] screenshot =

问题 I am making application related to images. I have multiple images on my screen. I had take screen shot of that. But it should not provide my whole screen. Little part of the top most & bottom most part need not be shown in that. I have navigation bar on top. And some buttons at bottom. I don't want to capture that buttons and navigation bar in my screenshot image. Below is my code for screen shot. -(UIImage *) screenshot { UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, YES,

问题 I am trying to take a retina screenshot programmatically and I have tried every approach found online, but I was not able to get the screenshot to be retina. I understand the following private API: UIGetScreenImage(); cannot be used as Apple will reject your app. However, this method returns exactly what I need (640x960 screenshot of the screen). I have tried this method on my iPhone 4 as well as the iPhone 4 simulator on retina hardware, but the resulting image is always 320x480. -(UIImage *

问题 I currently have a winform that, during run time, I need to take a screenshot of a section of it and save it as an image. In particular, I want a screenshot of a panel called "panel1". I've been able to find information on how to get screenshots of entire webforms, or entire screens... but I've had difficulty finding info on getting just a portion of the screen. Does anyone have any information that could point me in the right direction? Even the name of the documentation on MSDN's site that

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I have a site where users upload movies (MP4, FLV, OGV). I need a PHP function to generate a poster/screenshot in JPG automatically from an uploaded movie. The screenshot should be for the opening scene of the

问题 My problem is simple: I'm waiting to take a screenshot of an MKMapView, and I want to do it only once the map is loaded. Unfortunately, this delegate method is almost always called before the map is actually loaded. I just get a grid, or a few loaded tiles if I'm lucky. Is there a good way to do what I need to do? Or am I missing something in the MKMapViewDelegate protocol? Thanks! 回答1: Perhaps you could try adding a timer and then take the screenshot in the completion block of the timer. Or

问题 My problem is simple: I'm waiting to take a screenshot of an MKMapView, and I want to do it only once the map is loaded. Unfortunately, this delegate method is almost always called before the map is actually loaded. I just get a grid, or a few loaded tiles if I'm lucky. Is there a good way to do what I need to do? Or am I missing something in the MKMapViewDelegate protocol? Thanks! 回答1: Perhaps you could try adding a timer and then take the screenshot in the completion block of the timer. Or