LTwain::BitmapCallBack

Summary

Handles each image provided by the calling function LTwain::Acquire.

Syntax

virtual L_INT LTwain::BitmapCallBack (pBitmap)

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle that references the bitmap acquired from the TWAIN source. It is the same bitmap handle that you specify when calling the LTwain::Acquire function.

Returns

Comments

This callback function will be enabled only if you enabled the callback functions by calling LBase::EnableCallBack(TRUE). You must handle the image during this callback.

To prevent memory leaks, the user should free the bitmap within the callback function.

The LTwain::GetExtendedImageInfo function can only be called within [LTwain:BitmapCallBack.

Required DLLs and Libraries

• LTTWN
• 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

• LTwain::Acquire
• LTwain::GetExtendedImageInfo

Topics

• TWAIN Functionality: Callback Functions

Example

For an example, refer to LTwain::Acquire.