hasDDCConnect
Return display DDC connect state.
Declaration
virtual bool hasDDCConnect(
IOIndexconnectIndex );Parameters
- connectIndex:
Index of the display connection, from zero to the value of getConnectionCount().
Return Value
True if a DDC display is detected.
Overview
Hardware that supports DDC/EDID display sensing should implement this method to return true if a DDC display is detected. They should also return success for the connection attribute kConnectionSupportsHLDDCSense (from getAttributeForConnection()).
See Also
Miscellaneous
connectFlagsconvertCursorImagedoI2CRequestenableControllerflushCursorgetApertureRangegetAppleSensegetAttributegetAttributeForConnectiongetConnectionCountgetCurrentDisplayMode(IODisplayModeID *, IOIndex *)getDDCBlockgetDisplayModeCountgetDisplayModesgetInformationForDisplayModegetPixelFormatsgetPixelFormatsForDisplayModegetPixelInformationgetStartupDisplayModegetTimingInfoForDisplayModegetVRAMRangehandleEventreadDDCClockreadDDCDataregisterForInterruptTypesetApertureEnablesetAttributesetAttributeForConnectionsetCLUTWithEntriessetCurrentDisplayModesetCursorImagesetCursorStatesetDDCClocksetDDCDatasetDetailedTimingssetDisplayModesetGammaTablesetInterruptStatesetStartupDisplayModeunregisterInterrupt(void *)unregisterInterrupt(void *, UInt32)validateDetailedTiming