This function obtains error stack callback data and functions that are called to signal error stack changes for the current thread.
Declaration:
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AT_ERRCODE ACCUAPI IG_err_callback_get( LPVOID FAR* lplpPrivate, LPFNIG_ERRSTACK_ADD FAR* lplpfnAddCB, LPFNIG_ERRSTACK_CLEAR FAR* lplpfnClearCB ); |
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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_ERRSTACK_ADD FAR* | Pointer to LPFNIG_ERRSTACK_ADD variable to retrieve the callback function that is called after the record is added to the error stack. NULL is acceptable. |
| lplpfnClearCB | LPFNIG_ERRSTACK_CLEAR FAR* | Pointer to LPFNIG_ERRSTACK_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:
Filters, Multimedia, Flashpix
Example:
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LPVOID lpPrivate; LPFNIG_ERRSTACK_ADD lpfnAdd; LPFNIG_ERRSTACK_CLEAR lpfnClear; AT_ERRCODE iErrCode; iErrCode = IG_err_callback_get(&lpPrivate, &lpfnAdd, &lpfnClear); |
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Remarks:
Callback data and functions can be set using the IG_err_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 thread specific callbacks. Use IG_errmngr_callback_get to get the global data and callbacks.