This function sets the transparency options.
Declaration:
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AT_ERRCOUNT ACCUAPI IG_dspl_transparency_set(
[IN] HIGEAR hIGear,
[IN] DWORD dwGrpID,
[IN] AT_MODE nTranspMode,
[IN] const LPAT_RGB lpTranspColor,
[IN] HIGEAR hIMask,
[IN] const LPAT_RECTANGLE lpMaskRect,
[IN] const LPAT_POINT lpMaskLocation
);
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Arguments:
| Name | Type | Description |
| hIGear | HIGEAR | ImageGear handle of image. |
| dwGrpID | DWORD | Identifier of the group in which to set transparency options. |
| nTranspMode | AT_MODE |
New value of TranspMode to set. Possible value may be:
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| lpTranspColor | const LPAT_RGB | New value of TranspColor to set. If NULL, then this parameter is ignored. |
| hIMask | HIGEAR | New value of TranspMask option to set. Please note that the image is not deleted and the application code is responsible for removing the old value of this option. |
| lpMaskRect | const LPAT_RECTANGLE | New value of MaskRect option to set. If NULL, then this parameter is ignored. An empty rectangle is possible. |
| lpMaskLocation | const LPAT_POINT | New value of MaskLocation option to set. If NULL, then this parameter is ignored. |
Return Value:
Returns the number of ImageGear errors that occurred during this function call.
Supported Raster Image Formats:
All pixel formats supported by ImageGear Professional.
Sample:
None
Example:
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HIGEAR hIGear; /* HIGEAR handle of image */ DWORD nGrpID; /* display group identifier */ AT_MODE nTranspMode; /* transparency mode */ AT_RGB TranspColor; /* transparency color */ HIGEAR hIMask; /* transparent mask */ ... /* enable transparent color and mask with default mask rectangle and location oriented and scaled with main image */ nTranspMode = IG_DSPL_TRANSPARENCY_COLOR|IG_DSPL_TRANSPARENCY_MASK|IG_DSPL_TRANSPMASK_STRETCH_TO_IMAGE| IG_DSPL_TRANSPMASK_LOCATE_TO_IMAGE; /* set transparent color to white */ TranspColor.r = TranspColor.g = TranspColor.b = 255; IG_dspl_transparency_set( hIGear, nGrpID, nTranspMode, &TranspColor, hIMask, NULL, NULL ); ... |
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Remarks:
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This function sets the transparency only for image displaying. For saving image with transparency mask use function IG_display_transparent_set(). |