I am attempting to use the CGWindowListCreateImage function to capture a desktop screenshot. The following code (taken straight from the SonOfGrab sample) works on Leopard, but is failing on Snow Leopard:
CGImageRef screenShot = CGWindowListCreateImage(CGRectInfinite, kCGWindowListOptionOnScreenOnly, kCGNullWindowID, kCGWindowImageDefault);
On Leopard, the returned CGImageRef is what I expect: an image of the desktop and all on-screen windows.
On Snow Leopard, the CGImageRef is NULL and the following message is printed to the console:
<Error>: CGImageCreate: invalid image bits/pixel or bytes/row.
I have filed a bug (7212104), but wonder if there is a workaround that
I can use in the meantime, or if I should just use another method of
capturing the desktop. Has anyone else encountered this issue?
Thanks, Jason
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