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Implementing the GetModeConnection Call

The Display Manager uses GetModeConnection to ascertain the capabilities of a connected display. For this call, the driver should not attempt to determine whether the various modes are valid or safe. This means the kAllModesValid and kAllModesSafe bits of the csConnectFlags field should be set to 0. By setting these bit fields to 0, the driver forces the Display Manger to make a GetModeTiming status call for each timing mode instead of assuming that they all have the same state.

© 1999 Apple Computer, Inc. – (Last Updated 26 March 99)