ART_global_block

This function gets the name of the first global block.

Declaration:

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AT_ERRCOUNT ART_global_block_first( HIGEAR hIGear, LPART_BLOCK_NAME lpBlockName );

Arguments:

Name	Type	Description
hIGear	HIGEAR	HIGEAR handle to the image.
lpBlockName	LPART_BLOCK_NAME	A far pointer to an 8 byte array of memory that returns the type of block to query. The block type is either an ART-defined constant beginning with ART_BLOCK or a user defined block. See ARTAPI.H for the full list of ART-defined constants.

Return Value:

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

Supported Raster Image Formats:

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

Example

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HIGEAR hIGear; /* HIGEAR handle of image / ART_BLOCK_NAME lpBlockName; / returned type of first / / global block / AT_ERRCOUNT nErrcount; / tally of IG errors on / / stack */ nErrcount = ART_global_block_first(hIGear,&lpBlockName);

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HIGEAR  hIGear; /* HIGEAR handle of image */
ART_BLOCK_NAME lpBlockName; /* returned type of first */
/* global block  */
AT_ERRCOUNT nErrcount; /* tally of IG errors on */
/* stack  */
nErrcount = ART_global_block_first(hIGear,&lpBlockName);

Remarks:

The block data for the named block can be retrieved by calling ART_global_block_query() function.

Call ART_global_block_next() function to get the block name of the named block that follows the one that was passed into lpBlockName. This function sets lpBlockName to zeroes if there are no global blocks. Block names are returned in no particular order.

An error is set if any of the following conditions are met:

hIGear does not reference a valid ImageGear handle.
lpBlockName does not point to a valid address.