IG_FX_watermark

This function is used to produce a watermark like effect.

Declaration:

	Copy Code
AT_ERRCOUNT ACCUAPI IG_FX_watermark ( HIGEAR hIGear, const LPAT_RECT lpRect, const HIGEAR hWatermark );

Arguments:

Name	Type	Description
hIGear	HIGEAR	HIGEAR handle of image to watermark.
lpRect	const LPAT_RECT	Far pointer to an AT_RECT struct specifying the rectangular portion of the image to be processed. Set = NULL for whole image. Before ImageGear performs this operation, it will check to see if an internal flag has been set to TRUE to make a mask active for this HIGEAR image. If a mask is active, and a valid pointer to a mask can be found, ImageGear will override the settings passed to this structure in favor of the non-rectangular ROI defined by the mask.
hWatermark	const HIGEAR	8-bit sign centered image to use for watermarking.

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, except:
Indexed RGB with non-grayscale palette;
Images that have a Grayscale LUT attached to them.

Sample:

FlashPix

Example:

	Copy Code
HIGEAR hIGear; /* Handle of image to apply watermark to / HIGEAR hWMarkImage; / Handle of watermark image */ IG_FX_watermark ( hIGear, NULL, hWMarkImage );

Remarks:

8-bit sign centered image hWatermark is scaled to match image hIGear and is added to it.

This function, like other ImageGear Image Processing and Clipboard API calls, takes an AT_RECT structure as an argument, so that you can process a rectangular sub-region of an image. However, before ImageGear performs the operation specified by this function, it will check to see if an internal flag has been set to TRUE, indicating that a mask HIGEAR should be used with the image. If the flag is set to TRUE, and a valid pointer to a mask image has been assigned, ImageGear will override the settings passed to the AT_RECT structure and use the non-rectangular ROI defined by the mask HIGEAR. To create a non-rectangular region of interest, call IG_IP_NR_ROI_to_HIGEAR_mask().

Please see the descriptions of IG_IP_NR_ROI_mask_associate() and IG_IP_NR_ROI_to_HIGEAR_mask() for more details.