IG_dspl_transparency

This function returns the transparency parameters.

Declaration:

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AT_ERRCOUNT ACCUAPI IG_dspl_transparency_get( [IN] HIGEAR hIGear, [IN] DWORD dwGrpID, [OUT] LPAT_MODE lpnTranspMode, [OUT] LPAT_RGB lpTranspColor, [OUT] LPHIGEAR lphIMask, [OUT] LPAT_RECTANGLE lpMaskRect, [OUT] LPAT_POINT lpMaskLocation );

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AT_ERRCOUNT    ACCUAPI  IG_dspl_transparency_get(
        [IN] HIGEAR hIGear,
        [IN] DWORD dwGrpID,
        [OUT] LPAT_MODE lpnTranspMode,
        [OUT] LPAT_RGB lpTranspColor,
        [OUT] LPHIGEAR lphIMask,
        [OUT] LPAT_RECTANGLE lpMaskRect,
        [OUT] LPAT_POINT lpMaskLocation
);

Arguments:

Name	Type	Description
hIGear	HIGEAR	ImageGear handle of image.
dwGrpID	DWORD	Identifier of group to use.
lpnTranspMode	LPAT_MODE	Pointer where TranspMode options are returned. If NULL, then this parameter is ignored.
lpTranspColor	LPAT_RGB	Pointer where TranspColor option is returned. If NULL, then this parameter is ignored.
hphIMask	LPHIGEAR	Pointer where TranspMask option is returned. If NULL, then this parameter is ignored. Please note that this function does not change or delete the value of TranspMask, but only makes its copy.
lpMaskRect	LPAT_RECTANGLE	Pointer to where to return the value of the MaskRect option. If NULL, then this parameter is ignored. If an empty rectangle is returned then it is initialized with a rectangle equal to the entire mask image.
lpMaskLocation	LPAT_POINT	Pointer to where to return the value of MaskLocation option. 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 for C and C++.

Sample:

Display

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 / AT_RECTANGLE MaskRect; / mask rectangle / AT_POINT MaskLocation; / mask location */ ... IG_dspl_transparency_get( hIGear, nGrpID, &nTranspMode, &TranspColor, &hIMask, &MaskRect, &MaskLocation ); if( IG_image_is_valid( hIMask ) ) IG_image_delete( hIMask ); ...

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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    */
AT_RECTANGLE            MaskRect;       /* mask rectangle      */
AT_POINT                MaskLocation;    /* mask location   */
 ...
IG_dspl_transparency_get( hIGear, nGrpID, &nTranspMode, &TranspColor, &hIMask, &MaskRect,
&MaskLocation );
if( IG_image_is_valid( hIMask ) )
        IG_image_delete( hIMask );
 ...