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c++macoscore-graphicsfullscreen

Get screen resolution programmatically in OS X

I'd like to launch a fullscreen 3D C++ application in native resolution on mac. How can I retrieve the native screen resolution ?

Solution

  • If you don't wish to use Objective C, get the display ID that you wish to display on (using e.g. CGMainDisplayID), then use CGDisplayPixelsWide and CGDisplayPixelsHigh to get the screen width and height, in pixels. See "Getting Information About Displays" for how to get other display information.

    If you're willing to use a bit of Objective-C, simply use [[NSScreen mainScreen] frame].

    Note that there are other concerns with full screen display, namely ensuring other applications don't do the same. Read "Drawing to the Full Screen" in Apple's OpenGL Programming Guide for more.