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2014/10/15 ¤U¤È 10:14:28

iphone Programming Glossary: steam

Use a CoreGraphic Stroke as Alpha Mask in iPhone App

http://stackoverflow.com/questions/2208579/use-a-coregraphic-stroke-as-alpha-mask-in-iphone-app

line on the screen using CoreGraphics and strokes but I can't find a way to then use this as an alpha mask for the steam layer. If anyone could give me advice on what to use or even better some sample code I'd be very grateful as right now I'm.. core graphics mask share improve this question The method you want to call is CGContextClipToMask . Just draw your steam image and then the stroke on another CGImage. Then clip the steam to the stroke. Something like this void somewhereElse.. want to call is CGContextClipToMask . Just draw your steam image and then the stroke on another CGImage. Then clip the steam to the stroke. Something like this void somewhereElse UIImage steam UIImage imageNamed @ steamImage.png retain steamRef..

Extracting images from a PDF

http://stackoverflow.com/questions/2475450/extracting-images-from-a-pdf

cont if CGPDFDictionaryGetStream dict Contents cont NSLog @ Couldn't open page stream. 4. copy page contents steam CFDataRef contdata CGPDFStreamCopyData cont NULL 5. get the media array from stream CGPDFArrayRef media if CGPDFDictionaryGetArray.. cont if CGPDFDictionaryGetStream dict Contents cont NSLog @ Couldn't open page stream. else 4. copy page contents steam CFDataRef contdata CGPDFStreamCopyData cont NULL 5. get the media array from stream CGPDFArrayRef media if CGPDFDictionaryGetArray..

USB-Programming on iPhone

http://stackoverflow.com/questions/5908451/usb-programming-on-iphone

Then the stream delegate will be called this is a stream listener function that would actived by system while steam has any event void stream NSStream theStream handleEvent NSStreamEvent streamEvent switch streamEvent case NSStreamEventOpenCompleted..

Possible to change the alpha value of certain pixels on iPhone?

http://stackoverflow.com/questions/787783/possible-to-change-the-alpha-value-of-certain-pixels-on-iphone

Sprite's alpha in response to user interaction A good example of what I mean is iFog or iSteam where the user can wipe steam off the iPhone's screen. Swapping images out wouldn't be feasible due to the sheer number of possibilities where the user..