CAPTURECALLBACK Function
#include "l_bitmap.h"
L_INT pEXT_CALLBACK YourFunction (pBitmap, pCaptureInfo, pUserData)
pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
pLEADCAPTUREINFO pCaptureInfo; |
/* pointer to an info structure */ |
L_VOID * pUserData; |
/* pointer to additional parameters */ |
Handles the output image data acquired by one of the image capture functions.
Parameter |
Description |
pBitmap |
The pointer to the bitmap handle referencing the bitmap that contains the captured image. |
pCaptureInfo |
Pointer to a LEADCAPTUREINFO structure containing information about the source of the captured image. |
pUserData |
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 the calling function.) |
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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
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
Use this callback function to process captured image data when multiple captures are performed. Multiple captures can be done by setting the capture options using L_SetCaptureOption.
Required DLLs and Libraries
LTSCR 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_CaptureArea.