ART_edit_undo

This function returns (in lpUndoCount) the number of times that ART_edit_undo() can be called.

Declaration:

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AT_ERRCOUNT ART_edit_undo_count( HIGEAR hIGear, LPDWORD lpUndoCount );

Arguments:

Name	Type	Description
hIGear	HIGEAR	HIGEAR handle to the image.
lpUndoCount	LPDWORD	A far pointer that returns the number of undo operations that can be performed.

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 / AT_ERRCOUNT nErrcount; / tally of IG errors on stack / DWORD dwMarkCount; / count of potential undos */ nErrcount = ART_edit_undo_count(hIGear, &dwMarkCount);

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HIGEAR hIGear;      /* HIGEAR handle of image  */
AT_ERRCOUNT   nErrcount;    /* tally of IG errors on stack */
DWORD        dwMarkCount;  /* count of potential undos */
nErrcount = ART_edit_undo_count(hIGear, &dwMarkCount);

Remarks:

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

hIGear does not reference a valid ImageGear handle.
The memory pointed to by lpUndoCount is invalid.