DDCOLORCONTROL (Windows Embedded CE 6.0)
1/6/2010
This structure defines the color controls associated with a DirectDrawVideoPort object, an overlay surface, or a primary surface.
Syntax
typedef struct _DDCOLORCONTROL {
DWORD dwSize;
DWORD dwFlags;
LONG lBrightness;
LONG lContrast;
LONG lHue;
LONG lSaturation;
LONG lSharpness;
LONG lGamma;
LONG lColorEnable;
} 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::GetColorControls method, it also indicates which options are supported by the device.The following table shows the possible flags.
Flag Description DDCOLOR_BRIGHTNESS
The lBrightness member contains valid data.
DDCOLOR_COLORENABLE
The lColorEnable member contains valid data.
DDCOLOR_CONTRAST
The lContrast member contains valid data.
DDCOLOR_GAMMA
The lGamma member contains valid data.
DDCOLOR_HUE
The lHue member contains valid data.
DDCOLOR_SATURATION
The lSaturation member contains valid data.
DDCOLOR_SHARPNESS
The lSharpness member 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 toward black, and cause lighter luminance values to move toward white.
Lower values of contrast cause all luminance values to move toward 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.
The default is 1.
lColorEnable
Flag indicating whether color is used.If this member is zero, color is not used.
If this member is 1, color is used.
The default is 1.
Requirements
| Header | ddraw.h |
| Windows Embedded CE | Windows Embedded CE 6.0 and later |