PROGRESSCALLBACK Function
#include "ltdoc.h"
L_BOOL pEXT_CALLBACK YourFunction(pProgressData, pUserData)
pPROGRESSDATA pProgressData; |
/* pointer to PROGRESSDATA structure */ |
/* pointer to additional parameters */ |
Reports the progress of a specific operation and offers the client an opportunity to cancel. The address of this callback is passed as an argument to L_DocSetProgressCB.
Parameter |
Description |
pProgressData |
Pointer to a PROGRESSDATA structure that contains progress data for the current process. |
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 function that uses this callback function. (This is the same pointer that you pass in the pUserData parameter of L_DocSetProgressCB.) |
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Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function. |
Returns
TRUE |
The function was successful. Continue processing. |
FALSE |
An error occurred or the user cancelled. |
Comments
This function is called periodically by the OCR engine.
To activate the progress callback function, call L_DocSetProgressCB.
Required DLLs and Libraries
LTDOC 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: |
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Topics: |
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Example
For an Example, refer to L_DocSetProgressCB.