DDCOLORCONTROL

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The DDCOLORCONTROLstructure defines the color controls associated with a DirectDrawVideoPortObject, an overlay surface, or a primary surface.

typedef struct _DDCOLORCONTROL {
DWORD
dwSize
;
DWORD
dwFlags
;
LONG
lBrightness
;
LONG
lContrast
;
LONG
lHue
;
LONG
lSaturation
;
LONG
lSharpness
;
LONG
lGamma
;
LONG
lColorEnable
;
DWORD
dwReserved1
;
} DDCOLORCONTROL, FAR *LPDDCOLORCONTROL;

Members

dwSize

The size of the structure, in bytes. This member must be initialized before use.

dwFlags

Flags specifying which structure members contain valid data. When the structure is returned by the IDirectDrawColorControl::GetColorControlsmethod, it also indicates which options are supported by the device.

DDCOLOR_BRIGHTNESS	The lBrightnessmember contains valid data.
DDCOLOR_COLORENABLE	The lColorEnablemember contains valid data.
DDCOLOR_CONTRAST	The lContrastmember contains valid data.
DDCOLOR_GAMMA	The lGammamember contains valid data.
DDCOLOR_HUE	The lHuemember contains valid data.
DDCOLOR_SATURATION	The lSaturationmember contains valid data.
DDCOLOR_SHARPNESS	The lSharpnessmember contains valid data.

lBrightness

Luminance intensity, in IRE units times 100. The valid range is 0 to 10,000. The default is 750, which translates to 7.5 IRE.

lContrast

Relative difference between higher and lower intensity luminance values in IRE units times 100. The valid range is 0 to 20,000. The default value is 10,000 (100 IRE). Higher values of contrast cause darker luminance values to move towards black, and cause lighter luminance values to move towards white. Lower values of contrast cause all luminance values to move towards the middle luminance values.

lHue

Phase relationship of the chrominance components. Hue is specified in degrees and the valid range is –180 to 180. The default is zero.

lSaturation

Color intensity, in IRE units times 100. The valid range is 0 to 20,000. The default value is 10,000, (100 IRE).

lSharpness

Sharpness in arbitrary units. The valid range is 0 to 10. The default is 5.

lGamma

Controls the amount of gamma correction applied to the luminance values. The valid range is 1 to 500 gamma units, with a default of 1.

lColorEnable

Flag indicating whether color is used. If this member is zero, color is not used; if it is 1, then color is used. The default is 1.

dwReserved1

This member is reserved.

Requirements

Runs on	Versions	Declared in
Windows CE OS	2.12 or later. Version 2.12 requires DXPAK 1.0 or later.	ddraw.h

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Last updated on Friday, May 26, 2006

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