Color Resolution Flag Values

Processing options. Note that the palette and dithering options are useful only when the resulting bitmap requires a palette (when it is 8 bits per pixel or less). You can combine values when appropriate by using a bitwise OR ( | ). The following are valid values:

Value

Meaning

CRF_FIXEDPALETTE

[0x01] Use the fixed palette.

CRF_OPTIMIZEDPALETTE

[0x02] Create an optimized palette.

CRF_BYTEORDERBGR

[0x04] Use BGR color order. This flag only has meaning when going to 16 bits per pixel or higher.

CRF_BYTEORDERRGB

[0x00] Use RGB color order. This flag only has meaning when going to 16 bits per pixel or higher.

CRF_IDENTITYPALETTE

[0x08] Insert the Windows system palette.

CRF_USERPALETTE

[0x10] Use the palette specified in the pPalette parameter.

CRF_FASTMATCHPALETTE

[0x20] Use a predefined table to speed conversion using your own palette. Refer to L_CreateUserMatchTable

CRF_NODITHERING

[0x00000000] Use nearest color matching.

CRF_FLOYDSTEINDITHERING

[0x00010000] Use Floyd Stein dithering.

CRF_STUCKIDITHERING

[0x00020000] Use Stucki dithering.

CRF_BURKESDITHERING

[0x00030000] Use Burkes dithering.

CRF_SIERRADITHERING

[0x00040000] Use Sierra dithering.

CRF_STEVENSONARCEDITHERING

[0x00050000] Use Stevenson Arce dithering.

CRF_JARVISDITHERING

[0x00060000] Use Jarvis dithering.

CRF_ORDEREDDITHERING

[0x00070000] Use ordered dithering, which is faster but less accurate than other dithering methods.

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