| Available in LEADTOOLS Imaging Pro, Vector, Document, and Medical Imaging toolkits. | 
#include "l_bitmap.h"
L_INT pEXT_CALLBACK YourFunction (nPercent, pUserData)
| L_INT nPercent; | /* percentage completion of optimizing a buffer.*/ | 
| L_VOID * pUserData; | /* pointer to additional parameters */ | 
This callback function is called repeatedly by the L_OptOptimizeBuffer function to notify the user of the percentage of the optimization operation that has been completed. The callback function is called for every 1% of optimization that is completed.
| Parameter | Description | 
| nPercent | An integer from 0 to 100 that indicates the completion percentage of the buffer optimization operation. | 
| pUserData | A void pointer that you can use to access a variable or structure containing data that your callback function needs. This gives you a way to receive data indirectly from the L_OptOptimizeBuffer function. (This is the same pointer that you pass in the pUserData parameter of L_OptOptimizeBuffer function.) | 
| 
 | Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function. | 
Returns
| SUCCESS | The function was successful. | 
| <1 | An error occurred. Refer to Return Codes. | 
Comments
If the callback function returns a failure, the L_OptOptimizeBuffer will terminate and return the same error that the callback returned.
Required DLLs and Libraries
| LTIMGOPT For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application | 
See Also
| Functions: | L_OptOptimizeBuffer, L_OptGetDefaultOptions, L_OptOptimizeDir, OPTIMIZEIMAGEDIRCALLBACK. | 
| Topics: | 
Example
For an example, refer to L_OptOptimizeBuffer.