---
title: Core Graphics Constants
framework: Core Graphics
role: collectionGroup
role_heading: API Collection
path: coregraphics/core-graphics-constants
---

# Core Graphics Constants

## Topics

### Constants

- [conversionBlackPointCompensation](coregraphics/cgcolor/conversionblackpointcompensation.md)
- [kCGDisplayBitsPerPixel](coregraphics/kcgdisplaybitsperpixel.md)
- [kCGDisplayBitsPerSample](coregraphics/kcgdisplaybitspersample.md)
- [kCGDisplayBlendNormal](coregraphics/kcgdisplayblendnormal.md)
- [kCGDisplayBlendSolidColor](coregraphics/kcgdisplayblendsolidcolor.md)
- [kCGDisplayBytesPerRow](coregraphics/kcgdisplaybytesperrow.md)
- [kCGDisplayFadeReservationInvalidToken](coregraphics/kcgdisplayfadereservationinvalidtoken.md)
- [kCGDisplayHeight](coregraphics/kcgdisplayheight.md)
- [kCGDisplayIOFlags](coregraphics/kcgdisplayioflags.md)
- [kCGDisplayMode](coregraphics/kcgdisplaymode.md)
- [kCGDisplayModeIsInterlaced](coregraphics/kcgdisplaymodeisinterlaced.md)
- [kCGDisplayModeIsSafeForHardware](coregraphics/kcgdisplaymodeissafeforhardware.md)
- [kCGDisplayModeIsStretched](coregraphics/kcgdisplaymodeisstretched.md)
- [kCGDisplayModeIsTelevisionOutput](coregraphics/kcgdisplaymodeistelevisionoutput.md)
- [kCGDisplayModeUsableForDesktopGUI](coregraphics/kcgdisplaymodeusablefordesktopgui.md)
- [kCGDisplayRefreshRate](coregraphics/kcgdisplayrefreshrate.md)
- [kCGDisplaySamplesPerPixel](coregraphics/kcgdisplaysamplesperpixel.md)
- [kCGDisplayShowDuplicateLowResolutionModes](coregraphics/kcgdisplayshowduplicatelowresolutionmodes.md)
- [yCbCrMatrix_ITU_R_601_4](coregraphics/cgdisplaystream/ycbcrmatrix_itu_r_601_4.md)
- [yCbCrMatrix_ITU_R_709_2](coregraphics/cgdisplaystream/ycbcrmatrix_itu_r_709_2.md)
- [yCbCrMatrix_SMPTE_240M_1995](coregraphics/cgdisplaystream/ycbcrmatrix_smpte_240m_1995.md)
- [kCGDisplayWidth](coregraphics/kcgdisplaywidth.md)
- [kCGFontIndexInvalid](coregraphics/kcgfontindexinvalid.md)
- [kCGFontIndexMax](coregraphics/kcgfontindexmax.md)
- [kCGGlyphMax](coregraphics/kcgglyphmax.md)
- [kCGIODisplayModeID](coregraphics/kcgiodisplaymodeid.md)
- [kCGMouseDownEventMaskingDeadSwitchTimeout](coregraphics/kcgmousedowneventmaskingdeadswitchtimeout.md)
- [kCGNotifyEventTapAdded](coregraphics/kcgnotifyeventtapadded.md)
- [kCGNotifyEventTapRemoved](coregraphics/kcgnotifyeventtapremoved.md)
- [kCGNotifyGUIConsoleSessionChanged](coregraphics/kcgnotifyguiconsolesessionchanged.md)
- [kCGNotifyGUISessionUserChanged](coregraphics/kcgnotifyguisessionuserchanged.md)
- [kCGNumReservedWindowLevels](coregraphics/kcgnumreservedwindowlevels.md)
- [kCGSessionConsoleSetKey](coregraphics/kcgsessionconsolesetkey.md)
- [kCGSessionLoginDoneKey](coregraphics/kcgsessionlogindonekey.md)
- [kCGSessionOnConsoleKey](coregraphics/kcgsessiononconsolekey.md)
- [kCGSessionUserIDKey](coregraphics/kcgsessionuseridkey.md)
- [kCGSessionUserNameKey](coregraphics/kcgsessionusernamekey.md)
- [kCGWindowAlpha](coregraphics/kcgwindowalpha.md)
- [kCGWindowBackingLocationVideoMemory](coregraphics/kcgwindowbackinglocationvideomemory.md)
- [kCGWindowBounds](coregraphics/kcgwindowbounds.md)
- [kCGWindowIsOnscreen](coregraphics/kcgwindowisonscreen.md)
- [kCGWindowLayer](coregraphics/kcgwindowlayer.md)
- [kCGWindowMemoryUsage](coregraphics/kcgwindowmemoryusage.md)
- [kCGWindowName](coregraphics/kcgwindowname.md)
- [kCGWindowNumber](coregraphics/kcgwindownumber.md)
- [kCGWindowOwnerName](coregraphics/kcgwindowownername.md)
- [kCGWindowOwnerPID](coregraphics/kcgwindowownerpid.md)
- [kCGWindowSharingState](coregraphics/kcgwindowsharingstate.md)
- [kCGWindowStoreType](coregraphics/kcgwindowstoretype.md)
- [CGPointZero](coregraphics/cgpointzero.md)
- [CGRectZero](coregraphics/cgrectzero.md)
- [CGSizeZero](coregraphics/cgsizezero.md)
- [kCGWindowWorkspace](coregraphics/kcgwindowworkspace.md)
- [CG_HDR_BT_2100](coregraphics/cg_hdr_bt_2100.md)
- [kCGBitmapByteOrder16Host](coregraphics/kcgbitmapbyteorder16host.md)
- [kCGBitmapByteOrder32Host](coregraphics/kcgbitmapbyteorder32host.md)
- [kCGColorSpaceExtendedRange](coregraphics/kcgcolorspaceextendedrange.md)
- [kCGDefaultHDRImageContentHeadroom](coregraphics/kcgdefaulthdrimagecontentheadroom.md)
- [kCGEXRToneMappingGammaDefog](coregraphics/kcgexrtonemappinggammadefog.md)
- [kCGEXRToneMappingGammaExposure](coregraphics/kcgexrtonemappinggammaexposure.md)
- [kCGEXRToneMappingGammaKneeHigh](coregraphics/kcgexrtonemappinggammakneehigh.md)
- [kCGEXRToneMappingGammaKneeLow](coregraphics/kcgexrtonemappinggammakneelow.md)
- [kCGNullDirectDisplay](coregraphics/kcgnulldirectdisplay.md)
- [kCGNullWindowID](coregraphics/kcgnullwindowid.md)
- [kCGNumReservedBaseWindowLevels](coregraphics/kcgnumreservedbasewindowlevels.md)
- [kCGPDFContextAccessPermissions](coregraphics/kcgpdfcontextaccesspermissions.md)
- [kCGPDFContextCreateLinearizedPDF](coregraphics/kcgpdfcontextcreatelinearizedpdf.md)
- [kCGPDFContextCreatePDFA](coregraphics/kcgpdfcontextcreatepdfa.md)
- [kCGPDFOutlineChildren](coregraphics/kcgpdfoutlinechildren.md)
- [kCGPDFOutlineDestination](coregraphics/kcgpdfoutlinedestination.md)
- [kCGPDFOutlineDestinationRect](coregraphics/kcgpdfoutlinedestinationrect.md)
- [kCGPDFOutlineTitle](coregraphics/kcgpdfoutlinetitle.md)
- [kCGSkipBoostToHDR](coregraphics/kcgskipboosttohdr.md)
- [kCGUse100nitsHLGOOTF](coregraphics/kcguse100nitshlgootf.md)
- [kCGUseBT1886ForCoreVideoGamma](coregraphics/kcgusebt1886forcorevideogamma.md)
- [kCGUseLegacyHDREcosystem](coregraphics/kcguselegacyhdrecosystem.md)
- [kCGAssistiveTechHighWindowLevel](coregraphics/kcgassistivetechhighwindowlevel.md)
- [kCGBackstopMenuLevel](coregraphics/kcgbackstopmenulevel.md)
- [kCGDockWindowLevel](coregraphics/kcgdockwindowlevel.md)
- [kCGDraggingWindowLevel](coregraphics/kcgdraggingwindowlevel.md)
- [kCGFloatingWindowLevel](coregraphics/kcgfloatingwindowlevel.md)
- [kCGHelpWindowLevel](coregraphics/kcghelpwindowlevel.md)
- [kCGMainMenuWindowLevel](coregraphics/kcgmainmenuwindowlevel.md)
- [kCGModalPanelWindowLevel](coregraphics/kcgmodalpanelwindowlevel.md)
- [kCGNormalWindowLevel](coregraphics/kcgnormalwindowlevel.md)
- [kCGOverlayWindowLevel](coregraphics/kcgoverlaywindowlevel.md)
- [kCGPopUpMenuWindowLevel](coregraphics/kcgpopupmenuwindowlevel.md)
- [kCGScreenSaverWindowLevel](coregraphics/kcgscreensaverwindowlevel.md)
- [kCGStatusWindowLevel](coregraphics/kcgstatuswindowlevel.md)
- [kCGTornOffMenuWindowLevel](coregraphics/kcgtornoffmenuwindowlevel.md)
- [kCGUtilityWindowLevel](coregraphics/kcgutilitywindowlevel.md)

## See Also

### Reference

- [Core Graphics Structures](coregraphics/core-graphics-structures.md)
- [Core Graphics Enumerations](coregraphics/core-graphics-enumerations.md)
- [Core Graphics Functions](coregraphics/core-graphics-functions.md)
- [Core Graphics Data Types](coregraphics/core-graphics-data-types.md)