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Mac Forum / Programming / Mac Programming / January 2006screen capture
Hi, I'm trying to write an application that needs to analyze a part of the sceen outside of the application window (what color is pixel so and so..). How do I ask the OS about this? Or if thats not possible, how do I perform a screenshot programatically? I'm using Tiger and c/c++ or objective-c. Thanks Ole Andre Karlson The do-it-yourself approach is to get the address of the frame buffer in user space with CGDisplayBaseAddress() or CGDisplayAddressForPosition(), then directly read the pixels. Of course, you have to be ready to interpret raw pixel data. |
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