IG_errmngr_callback

This function obtains error stack callback data and functions that are called to signal error stack changes for all threads.

Declaration:

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AT_ERRCODE ACCUAPI IG_errmngr_callback_get( LPVOID FAR* lplpPrivate, LPFNIG_ERRMNGR_ADD FAR* lplpfnAddCB, LPFNIG_ERRMNGR_CLEAR FAR* lplpfnClearCB );

Arguments:

Name	Type	Description
lplpPrivate	LPVOID FAR*	Pointer to LPVOID variable to retrieve the private data that is passed to lplpfnAddCB and lplpfnClearCB callbacks. NULL is acceptable.
lplpfnAddCB	LPFNIG_ERRMNGR_ADD FAR*	Pointer to LPFNIG_ERRMNGR_ADD variable to retrieve the callback function that is called after the record is added to the error stack. NULL is acceptable.
lplpfnClearCB	LPFNIG_ERRMNGR_CLEAR FAR*	Pointer to LPFNIG_ERRMNGR_CLEAR variable to retrieve the callback function that is called after the error stack is cleared. NULL is acceptable.

Return Value:

Returns the code of the ImageGear error that occurred during this function call. A value of zero means no errors have occurred. Errors that occurred during this function call are not appended onto the error stack.

Supported Raster Image Formats:

This function does not process image pixels.

Sample:

None

Example:

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LPVOID Private; LPFNIG_ERRMNGR_ADD lpfnAdd; LPFNIG_ERRMNGR_CLEAR lpfnClear; AT_ERRCODE iErrCode; iErrCode = IG_errmngr_callback_get( &Private, &lpfnAdd, &lpfnClear );

Remarks:

Global private data and callback functions can be set using IG_errmngr_callback_set function.

Each thread has its own independent error stack. There are two types of callbacks - local to thread and global. This API allows you to get the global (thread independent) callbacks. Use IG_err_callback_get to get the thread specific data and callbacks.