CAPTURECALLBACK

Summary

Handles the output image data acquired by one of the image capture functions.

Syntax

#include "l_bitmap.h"

L_INT pEXT_CALLBACK YourFunction (pBitmap, pCaptureInfo, pUserData)

Parameters

pBITMAPHANDLE pBitmap

The pointer to the bitmap handle referencing the bitmap that contains the captured image.

pLEADCAPTUREINFO pCaptureInfo

Pointer to a LEADCAPTUREINFO structure containing information about the source of the captured image.

L_VOID * 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.)

Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function.

Returns

Value	Meaning
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

• L_SetCaptureOption

Topics

• Support Functions: Callbacks
• Implementing Screen Capture

Example

For an example, refer to L_CaptureArea.