I\'d like to laun开发者_Go百科ch a fullscreen 3D C++ application in native resolution on mac. How can I retrieve the native screen resolution ?If you don\'t wish to use Objective C, get the display ID
I\'m not that great with Core Graphics, but I am drawing text on the screen to my CGContext. I am doing this immediately after I add a standard, 开发者_如何学Pythonopaque UIView to my user interface.
How do I draw a filled circle with core graphics and return it as a UIImage? I want to do something like the following:
I have already implemented multitouch image rotation using standard iOS graphics library (Core Graphics).
- (UIImage*) getImage {开发者_StackOverflow CGImage imgA = .... CGImage imgB = .... // ... //I want to draw imgA onto imgB and return the result
Our main UIView is a UIScrollView with a fixed background image (very common, obviously). In that scrollView, we have several UIViews that hold content and scroll up and down as the user scrolls (also
In Photoshop a layer can be blended with a layer below it using many different ways, ie Normal, Dissolve, Darken, Soft Light, etc. 开发者_如何学运维 I would like to duplicate this effect programmatica
I have three NSViews in a Cocoa application, each subviews of the other. FirstNSView -> SecondNSView -> ThirdNSView
My application gives these errors on the console: <Error>: CGBitmapContextCreateImage: invalid context 0xdf12000
I\'m looking to replicate with Cocoa/Core Graphics the process which seems to occur on iOS when setting an image for aUITabBarItem. When the tab bar item is selected, the image is overlayed with a gra
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