IG_dspl_antialias_set

This function sets new anti-alias settings.

Declaration:

	Copy Code
AT_ERRCOUNT ACCUAPI IG_dspl_antialias_set_ex( [IN] HIGEAR hIGear, [IN] DWORD dwGrpID, [IN] AT_MODE nAliasFlags, [IN] INT Threshold, [IN] INT nColorQuality );

Arguments:

Name	Type	Description
hIGear	HIGEAR	ImageGear handle of image.
dwGrpID	DWORD	Identifier of group in which to set option.
nAliasFlags	AT_MODE	New value of AliasMode to set. It is an OR combination of following elements: Scale-Up interpolation (re-sampling) Scale-Down interpolation (anti-aliasing) For 1 bit images anti-aliasing element is a one of constants: IG_DSPL_ANTIALIAS_NONE IG_DSPL_ANTIALIAS_SCALE_TO_GRAY IG_DSPL_ANTIALIAS_PRESERVE_BLACK IG_DSPL_ANTIALIAS_PRESERVE_WHITE with OR combination of one additional flag IG_DSPL_ANTIALIAS_SUBSAMPLE Anti-aliasing for all non-1 bit color spaces is activated with the IG_DSPL_ANTIALIAS_COLOR flag. Scale-Up interpolation for all non-1 bit color spaces is specified by the IG_DSPL_ANTIALIAS_RESAMPLE_BILINE flag.
nThreshold	INT	It indicates the threshold value of the amount of selected color to include for IG_DSPL_ANTIALIAS_PRESERVE_XXXX scale-down interpolations. Please see Dithering, Anti-Aliasing, and Palette Handling.
nColorQuality	INT	Specifies quality of color scale-down interpolation (anti-aliasing). Valid values are from 0 to 100 and specify the percent of image pixels taken into account to produce one display pixel. Zero value means automatic quality choice according with image resolution and display settings.

Return Value:

Returns the number of ImageGear errors that occurred during this function call.

Supported Raster Image Formats:

All pixel formats supported by ImageGear for C and C++.

Sample:

None

Example:

	Copy Code
HIGEAR hIGear; /* HIGEAR handle of image / DWORD nGrpID; / display group identifier / ... / sets scale to gray algorithm with subsampling */ IG_dspl_antialias_set_ex( hIGear, nGrpID, IG_DSPL_ANTIALIAS_SCALE_TO_GRAY\| IG_DSPL_ANTIALIAS_SUBSAMPLE, 50, 80); ...

Copy Code

HIGEAR           hIGear;     /* HIGEAR handle of image  */ 
DWORD           nGrpID;     /* display group identifier */
 ...
/* sets scale to gray algorithm with subsampling  */
IG_dspl_antialias_set_ex( hIGear, nGrpID, IG_DSPL_ANTIALIAS_SCALE_TO_GRAY|
IG_DSPL_ANTIALIAS_SUBSAMPLE, 50, 80);
 ...