Mac OS 9
Macros | Typedefs | Enumerations | Functions | Variables
CGDirectDisplay.h File Reference
CoreGraphics

CoreGraphics direct display. More...

#include <CGBase.h>
#include <CGGeometry.h>
#include <CGError.h>
#include <CFArray.h>
#include <CFString.h>
#include <CFDictionary.h>

Go to the source code of this file.

Macros

#define kCGDirectMainDisplay   ((CGDirectDisplayID)NULL)
 

Typedefs

typedef struct _CGDirectDisplayID * CGDirectDisplayID
 
typedef struct _CGDirectPaletteRef * CGDirectPaletteRef
 
typedef u_int32_t CGDisplayCount
 
typedef u_int32_t CGTableCount
 
typedef int32_t CGDisplayCoord
 
typedef u_int8_t CGByteValue
 
typedef u_int32_t CGOpenGLDisplayMask
 
typedef u_int32_t CGBeamPosition
 
typedef int32_t CGMouseDelta
 
typedef double CGRefreshRate
 
typedef CGError CGDisplayErr
 
typedef float CGGammaValue
 

Enumerations

enum  { CGDisplayNoErr = kCGErrorSuccess }
 

Functions

CGDisplayErr CGGetDisplaysWithPoint (CGPoint point, CGDisplayCount maxDisplays, CGDirectDisplayID *dspys, CGDisplayCount *dspyCnt)
 
CGDisplayErr CGGetDisplaysWithRect (CGRect rect, CGDisplayCount maxDisplays, CGDirectDisplayID *dspys, CGDisplayCount *dspyCnt)
 
CGDisplayErr CGGetDisplaysWithOpenGLDisplayMask (CGOpenGLDisplayMask mask, CGDisplayCount maxDisplays, CGDirectDisplayID *dspys, CGDisplayCount *dspyCnt)
 
CGDisplayErr CGGetActiveDisplayList (CGDisplayCount maxDisplays, CGDirectDisplayID *activeDspys, CGDisplayCount *dspyCnt)
 
CGOpenGLDisplayMask CGDisplayIDToOpenGLDisplayMask (CGDirectDisplayID display)
 
CGRect CGDisplayBounds (CGDirectDisplayID display)
 
size_t CGDisplayPixelsWide (CGDirectDisplayID display)
 
size_t CGDisplayPixelsHigh (CGDirectDisplayID display)
 
CFArrayRef CGDisplayAvailableModes (CGDirectDisplayID display)
 
CFDictionaryRef CGDisplayBestModeForParameters (CGDirectDisplayID display, size_t bitsPerPixel, size_t width, size_t height, boolean_t *exactMatch)
 
CFDictionaryRef CGDisplayBestModeForParametersAndRefreshRate (CGDirectDisplayID display, size_t bitsPerPixel, size_t width, size_t height, CGRefreshRate refresh, boolean_t *exactMatch)
 
CFDictionaryRef CGDisplayCurrentMode (CGDirectDisplayID display)
 
CGDisplayErr CGDisplaySwitchToMode (CGDirectDisplayID display, CFDictionaryRef mode)
 
size_t CGDisplayBitsPerPixel (CGDirectDisplayID display)
 
size_t CGDisplayBitsPerSample (CGDirectDisplayID display)
 
size_t CGDisplaySamplesPerPixel (CGDirectDisplayID display)
 
size_t CGDisplayBytesPerRow (CGDirectDisplayID display)
 
CGDisplayErr CGSetDisplayTransferByFormula (CGDirectDisplayID display, CGGammaValue redMin, CGGammaValue redMax, CGGammaValue redGamma, CGGammaValue greenMin, CGGammaValue greenMax, CGGammaValue greenGamma, CGGammaValue blueMin, CGGammaValue blueMax, CGGammaValue blueGamma)
 
CGDisplayErr CGGetDisplayTransferByFormula (CGDirectDisplayID display, CGGammaValue *redMin, CGGammaValue *redMax, CGGammaValue *redGamma, CGGammaValue *greenMin, CGGammaValue *greenMax, CGGammaValue *greenGamma, CGGammaValue *blueMin, CGGammaValue *blueMax, CGGammaValue *blueGamma)
 
CGDisplayErr CGSetDisplayTransferByTable (CGDirectDisplayID display, CGTableCount tableSize, const CGGammaValue *redTable, const CGGammaValue *greenTable, const CGGammaValue *blueTable)
 
CGDisplayErr CGGetDisplayTransferByTable (CGDirectDisplayID display, CGTableCount capacity, CGGammaValue *redTable, CGGammaValue *greenTable, CGGammaValue *blueTable, CGTableCount *sampleCount)
 
CGDisplayErr CGSetDisplayTransferByByteTable (CGDirectDisplayID display, CGTableCount tableSize, const CGByteValue *redTable, const CGByteValue *greenTable, const CGByteValue *blueTable)
 
void CGDisplayRestoreColorSyncSettings (void)
 
boolean_t CGDisplayIsCaptured (CGDirectDisplayID display)
 
CGDisplayErr CGDisplayCapture (CGDirectDisplayID display)
 
CGDisplayErr CGDisplayRelease (CGDirectDisplayID display)
 
CGDisplayErr CGCaptureAllDisplays (void)
 
CGDisplayErr CGReleaseAllDisplays (void)
 
void * CGShieldingWindowID (CGDirectDisplayID display)
 
int32_t CGShieldingWindowLevel (void)
 
void * CGDisplayBaseAddress (CGDirectDisplayID display)
 
void * CGDisplayAddressForPosition (CGDirectDisplayID display, CGDisplayCoord x, CGDisplayCoord y)
 
CGDisplayErr CGDisplayHideCursor (CGDirectDisplayID display)
 
CGDisplayErr CGDisplayShowCursor (CGDirectDisplayID display)
 
CGDisplayErr CGDisplayMoveCursorToPoint (CGDirectDisplayID display, CGPoint point)
 
void CGGetLastMouseDelta (CGMouseDelta *deltaX, CGMouseDelta *deltaY)
 
boolean_t CGDisplayCanSetPalette (CGDirectDisplayID display)
 
CGDisplayErr CGDisplaySetPalette (CGDirectDisplayID display, CGDirectPaletteRef palette)
 
CGDisplayErr CGDisplayWaitForBeamPositionOutsideLines (CGDirectDisplayID display, CGBeamPosition upperScanLine, CGBeamPosition lowerScanLine)
 
CGBeamPosition CGDisplayBeamPosition (CGDirectDisplayID display)
 

Variables

CFStringRef kCGDisplayWidth
 
CFStringRef kCGDisplayHeight
 
CFStringRef kCGDisplayMode
 
CFStringRef kCGDisplayBitsPerPixel
 
CFStringRef kCGDisplayBitsPerSample
 
CFStringRef kCGDisplaySamplesPerPixel
 
CFStringRef kCGDisplayRefreshRate
 
CFStringRef kCGDisplayModeUsableForDesktopGUI
 
CFStringRef kCGDisplayIOFlags
 

Detailed Description

CoreGraphics direct display.

Introduced In: CoreGraphics-122 (Mac OS X 10.1)
Avaliable From: Universal Interfaces 3.4.1
Copyright: © 2000-2001 by Apple Computer, Inc., all rights reserved.

For bug reports, consult the following page on the World Wide Web: 

http://developer.apple.com/bugreporter/

Macro Definition Documentation

◆ kCGDirectMainDisplay

#define kCGDirectMainDisplay   ((CGDirectDisplayID)NULL)

A NULL value points to the main display device as a programming convention

Typedef Documentation

◆ CGGammaValue

typedef float CGGammaValue

Set a display gamma/transfer function from a formula specifying min and max values and a gamma for each channel. Gamma values must be greater than 0.0. To get an antigamma of 1.6, one would specify a value of (1.0 / 1.6) Min values must be greater than or equal to 0.0 and less than 1.0. Max values must be greater than 0.0 and less than or equal to 1.0. Out of range values, or Max greater than or equal to Min result in a kCGSRangeCheck error.

Values are computed by sampling a function for a range of indices from 0 through 1: value = Min + ((Max - Min) * pow(index, Gamma)) The resulting values are converted to a machine specific format and loaded into hardware.

Function Documentation

◆ CGCaptureAllDisplays()

CGDisplayErr CGCaptureAllDisplays ( void  )

Capture all displays; this has the nice effect of providing an immersive environment, and preventing other apps from trying to adjust themselves to display changes only needed by your app. CGCaptureAllDisplays()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayAddressForPosition()

void* CGDisplayAddressForPosition ( CGDirectDisplayID  display,
CGDisplayCoord  x,
CGDisplayCoord  y 
)

return address for X,Y in screen coordinates; (0,0) represents the upper left corner of the display. returns NULL for an invalid display or out of bounds coordinates If the display has not been captured, the returned address may refer to read-only memory. CGDisplayAddressForPosition()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayAvailableModes()

CFArrayRef CGDisplayAvailableModes ( CGDirectDisplayID  display)

Return a CFArray of CFDictionaries describing all display modes. Returns NULL if the display is invalid. CGDisplayAvailableModes()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayBaseAddress()

void* CGDisplayBaseAddress ( CGDirectDisplayID  display)

Returns base address of display or NULL for an invalid display. If the display has not been captured, the returned address may refer to read-only memory. CGDisplayBaseAddress()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayBeamPosition()

CGBeamPosition CGDisplayBeamPosition ( CGDirectDisplayID  display)

Returns the current beam position on the display. If display is invalid, or the display does not implement conventional video vertical and horizontal sweep in painting, or the driver does not implement this functionality, 0 is returned. CGDisplayBeamPosition()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayBestModeForParameters()

CFDictionaryRef CGDisplayBestModeForParameters ( CGDirectDisplayID  display,
size_t  bitsPerPixel,
size_t  width,
size_t  height,
boolean_t *  exactMatch 
)

Try to find a display mode of specified depth with dimensions equal or greater than specified. If no depth match is found, try for the next larger depth with dimensions equal or greater than specified. If no luck, then just return the current mode.

exactmatch, if not NULL, is set to 'true' if an exact match in width, height, and depth is found, and 'false' otherwise. Returns NULL if display is invalid. CGDisplayBestModeForParameters()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayBestModeForParametersAndRefreshRate()

CFDictionaryRef CGDisplayBestModeForParametersAndRefreshRate ( CGDirectDisplayID  display,
size_t  bitsPerPixel,
size_t  width,
size_t  height,
CGRefreshRate  refresh,
boolean_t *  exactMatch 
)

CGDisplayBestModeForParametersAndRefreshRate()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayBitsPerPixel()

size_t CGDisplayBitsPerPixel ( CGDirectDisplayID  display)

Query parameters for current mode CGDisplayBitsPerPixel()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayBitsPerSample()

size_t CGDisplayBitsPerSample ( CGDirectDisplayID  display)

CGDisplayBitsPerSample()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayBounds()

CGRect CGDisplayBounds ( CGDirectDisplayID  display)

Return screen size and origin in global coords; Empty rect if display is invalid CGDisplayBounds()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayBytesPerRow()

size_t CGDisplayBytesPerRow ( CGDirectDisplayID  display)

CGDisplayBytesPerRow()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayCanSetPalette()

boolean_t CGDisplayCanSetPalette ( CGDirectDisplayID  display)

Palette controls (8 bit pseudocolor only) Returns TRUE if the current display mode supports palettes CGDisplayCanSetPalette()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayCapture()

CGDisplayErr CGDisplayCapture ( CGDirectDisplayID  display)

CGDisplayCapture()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayCurrentMode()

CFDictionaryRef CGDisplayCurrentMode ( CGDirectDisplayID  display)

Return a CFDictionary describing the current display mode. Returns NULL if display is invalid. CGDisplayCurrentMode()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayHideCursor()

CGDisplayErr CGDisplayHideCursor ( CGDirectDisplayID  display)

Mouse Cursor controls CGDisplayHideCursor()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayIDToOpenGLDisplayMask()

CGOpenGLDisplayMask CGDisplayIDToOpenGLDisplayMask ( CGDirectDisplayID  display)

Map a display to an OpenGL display mask; returns 0 on invalid display CGDisplayIDToOpenGLDisplayMask()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayIsCaptured()

boolean_t CGDisplayIsCaptured ( CGDirectDisplayID  display)

Display capture and release CGDisplayIsCaptured()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayMoveCursorToPoint()

CGDisplayErr CGDisplayMoveCursorToPoint ( CGDirectDisplayID  display,
CGPoint  point 
)

decrements hide cursor count
Move the cursor to the specified point relative to the display origin (the upper left corner of the display). Returns CGDisplayNoErr on success. No events are generated as a result of this move. Points that would lie outside the desktop are clipped to the desktop. CGDisplayMoveCursorToPoint()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayPixelsHigh()

size_t CGDisplayPixelsHigh ( CGDirectDisplayID  display)

CGDisplayPixelsHigh()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayPixelsWide()

size_t CGDisplayPixelsWide ( CGDirectDisplayID  display)

CGDisplayPixelsWide()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayRelease()

CGDisplayErr CGDisplayRelease ( CGDirectDisplayID  display)

CGDisplayRelease()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayRestoreColorSyncSettings()

void CGDisplayRestoreColorSyncSettings ( void  )

Restore gamma tables of system displays to the user's ColorSync specified values CGDisplayRestoreColorSyncSettings()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplaySamplesPerPixel()

size_t CGDisplaySamplesPerPixel ( CGDirectDisplayID  display)

CGDisplaySamplesPerPixel()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplaySetPalette()

CGDisplayErr CGDisplaySetPalette ( CGDirectDisplayID  display,
CGDirectPaletteRef  palette 
)

Set a palette. The current gamma function is applied to the palette elements before being loaded into hardware. CGDisplaySetPalette()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayShowCursor()

CGDisplayErr CGDisplayShowCursor ( CGDirectDisplayID  display)

increments hide cursor count CGDisplayShowCursor()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplaySwitchToMode()

CGDisplayErr CGDisplaySwitchToMode ( CGDirectDisplayID  display,
CFDictionaryRef  mode 
)

Switch display mode. Note that after switching, display parameters and addresses may change. The selected display mode persists for the life of the program, and automatically reverts to the permanent setting made by Preferences when the program terminates. The mode dictionary passed in must be a dictionary vended by other CGDirectDisplay APIs such as CGDisplayBestModeForParameters() and CGDisplayAvailableModes(). CGDisplaySwitchToMode()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGDisplayWaitForBeamPositionOutsideLines()

CGDisplayErr CGDisplayWaitForBeamPositionOutsideLines ( CGDirectDisplayID  display,
CGBeamPosition  upperScanLine,
CGBeamPosition  lowerScanLine 
)

Wait until the beam position is outside the range specified by upperScanLine and lowerScanLine. Note that if upperScanLine and lowerScanLine encompass the entire display height, the function returns an error. lowerScanLine must be greater than or equal to upperScanLine.

Some display systems may not conventional video vertical and horizontal sweep in painting. These displays report a kCGDisplayRefreshRate of 0 in the CFDictionaryRef returned by CGDisplayCurrentMode(). On such displays, this function returns at once.

Some drivers may not implement support for this mechanism. On such displays, this function returns at once.

Returns CGDisplayNoErr on success, and an error if display or upperScanLine and lowerScanLine are invalid.

The app should set the values of upperScanLine and lowerScanLine to allow enough lead time for the drawing operation to complete. A common strategy is to wait for the beam to pass the bottom of the drawing area, allowing almost a full vertical sweep period to perform drawing. To do this, set upperScanLine to 0, and set lowerScanLine to the bottom of the bounding box: lowerScanLine = (CGBeamPosition)(cgrect.origin.y + cgrect.size.height);

IOKit may implement this as a spin-loop on the beam position call used for CGDisplayBeamPosition(). On such system the function is CPU bound, and subject to all the usual scheduling pre-emption. In particular, attempting to wait for the beam to hit a specific scanline may be an exercise in frustration.

These functions are advisary in nature, and depend on IOKit and hardware specific drivers to implement support. If you need extremely precise timing, or access to vertical blanking interrupts, you should consider writing a device driver to tie into hardware-specific capabilities. CGDisplayWaitForBeamPositionOutsideLines()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGGetActiveDisplayList()

CGDisplayErr CGGetActiveDisplayList ( CGDisplayCount  maxDisplays,
CGDirectDisplayID *  activeDspys,
CGDisplayCount *  dspyCnt 
)

Get lists of displays. Use this to determine display IDs

If the activeDspys array is NULL, maxDisplays is ignored, and *dspyCnt is filled in with the number of displays meeting the function's requirements.

The first display returned in the list is the main display, the one with the menu bar. When mirroring, this will be the largest display, or if all are the same size, the one with the deepest pixel depth. CGGetActiveDisplayList()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGGetDisplaysWithOpenGLDisplayMask()

CGDisplayErr CGGetDisplaysWithOpenGLDisplayMask ( CGOpenGLDisplayMask  mask,
CGDisplayCount  maxDisplays,
CGDirectDisplayID *  dspys,
CGDisplayCount *  dspyCnt 
)

CGGetDisplaysWithOpenGLDisplayMask()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGGetDisplaysWithPoint()

CGDisplayErr CGGetDisplaysWithPoint ( CGPoint  point,
CGDisplayCount  maxDisplays,
CGDirectDisplayID *  dspys,
CGDisplayCount *  dspyCnt 
)

Mechanisms used to find screen IDs An array length (maxDisplays) and array of CGDirectDisplayIDs are passed in. Up to maxDisplays of the array are filled in with the displays meeting the specified criteria. The actual number of displays filled in is returned in dspyCnt.

If the dspys array is NULL, maxDisplays is ignored, and *dspyCnt is filled in with the number of displays meeting the function's requirements. CGGetDisplaysWithPoint()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGGetDisplaysWithRect()

CGDisplayErr CGGetDisplaysWithRect ( CGRect  rect,
CGDisplayCount  maxDisplays,
CGDirectDisplayID *  dspys,
CGDisplayCount *  dspyCnt 
)

CGGetDisplaysWithRect()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGGetDisplayTransferByFormula()

CGDisplayErr CGGetDisplayTransferByFormula ( CGDirectDisplayID  display,
CGGammaValue *  redMin,
CGGammaValue *  redMax,
CGGammaValue *  redGamma,
CGGammaValue *  greenMin,
CGGammaValue *  greenMax,
CGGammaValue *  greenGamma,
CGGammaValue *  blueMin,
CGGammaValue *  blueMax,
CGGammaValue *  blueGamma 
)

CGGetDisplayTransferByFormula()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGGetDisplayTransferByTable()

CGDisplayErr CGGetDisplayTransferByTable ( CGDirectDisplayID  display,
CGTableCount  capacity,
CGGammaValue *  redTable,
CGGammaValue *  greenTable,
CGGammaValue *  blueTable,
CGTableCount *  sampleCount 
)

Get transfer tables. Capacity should contain the number of samples each array can hold, and *sampleCount is filled in with the number of samples actually copied in. CGGetDisplayTransferByTable()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGGetLastMouseDelta()

void CGGetLastMouseDelta ( CGMouseDelta *  deltaX,
CGMouseDelta *  deltaY 
)

Report the mouse position change associated with the last mouse move event recieved by this application. CGGetLastMouseDelta()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGReleaseAllDisplays()

CGDisplayErr CGReleaseAllDisplays ( void  )

Release all captured displays, and restore the display modes to the user's preferences. May be used in conjunction with CGDisplayCapture() or CGCaptureAllDisplays(). CGReleaseAllDisplays()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGSetDisplayTransferByByteTable()

CGDisplayErr CGSetDisplayTransferByByteTable ( CGDirectDisplayID  display,
CGTableCount  tableSize,
const CGByteValue *  redTable,
const CGByteValue *  greenTable,
const CGByteValue *  blueTable 
)

As a convenience, allow setting of the gamma table by byte values CGSetDisplayTransferByByteTable()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGSetDisplayTransferByFormula()

CGDisplayErr CGSetDisplayTransferByFormula ( CGDirectDisplayID  display,
CGGammaValue  redMin,
CGGammaValue  redMax,
CGGammaValue  redGamma,
CGGammaValue  greenMin,
CGGammaValue  greenMax,
CGGammaValue  greenGamma,
CGGammaValue  blueMin,
CGGammaValue  blueMax,
CGGammaValue  blueGamma 
)

CGSetDisplayTransferByFormula()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGSetDisplayTransferByTable()

CGDisplayErr CGSetDisplayTransferByTable ( CGDirectDisplayID  display,
CGTableCount  tableSize,
const CGGammaValue *  redTable,
const CGGammaValue *  greenTable,
const CGGammaValue *  blueTable 
)

Set a display gamma/transfer function using tables of data for each channel. Values within each table should have values in the range of 0.0 through 1.0. The same table may be passed in for red, green, and blue channels. 'tableSize' indicates the number of entries in each table. The tables are interpolated as needed to generate the number of samples needed by hardware. CGSetDisplayTransferByTable()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGShieldingWindowID()

void* CGShieldingWindowID ( CGDirectDisplayID  display)

Returns CoreGraphics raw shield window ID or NULL if not shielded This value may be used with drawing surface APIs. CGShieldingWindowID()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ CGShieldingWindowLevel()

int32_t CGShieldingWindowLevel ( void  )

Returns the window level used for the shield window. This value may be used with Cocoa windows to position the Cocoa window in the same window level as the shield window. CGShieldingWindowLevel()

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

Variable Documentation

◆ kCGDisplayBitsPerPixel

CFStringRef kCGDisplayBitsPerPixel
extern

kCGDisplayBitsPerPixel

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ kCGDisplayBitsPerSample

CFStringRef kCGDisplayBitsPerSample
extern

kCGDisplayBitsPerSample

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ kCGDisplayHeight

CFStringRef kCGDisplayHeight
extern

kCGDisplayHeight

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ kCGDisplayIOFlags

CFStringRef kCGDisplayIOFlags
extern

kCGDisplayIOFlags

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ kCGDisplayMode

CFStringRef kCGDisplayMode
extern

kCGDisplayMode

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ kCGDisplayModeUsableForDesktopGUI

CFStringRef kCGDisplayModeUsableForDesktopGUI
extern

kCGDisplayModeUsableForDesktopGUI

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ kCGDisplayRefreshRate

CFStringRef kCGDisplayRefreshRate
extern

kCGDisplayRefreshRate

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ kCGDisplaySamplesPerPixel

CFStringRef kCGDisplaySamplesPerPixel
extern

kCGDisplaySamplesPerPixel

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later

◆ kCGDisplayWidth

CFStringRef kCGDisplayWidth
extern

Display mode selection Display modes are represented as CFDictionaries All dictionaries and arrays returned via these mechanisms are owned by the framework and should not be released. The framework will not release them out from under your application.

Values associated with the following keys are CFNumber types. With CFNumberGetValue(), use kCFNumberLongType for best results. Keys used in mode dictionaries. Source C strings shown won't change. Some CFM environments cannot import data variables, and so duplicate these CFStringRefs locally. kCGDisplayWidth

Non-Carbon CFM: not available
Carbon Lib: not available
Mac OS X: in version 10.0 and later