Native Transfer

The Native Transfer Mode, is supported by all Sources, and is usually the mode chosen by most TWAIN applications.  The image is transferred from the Source to DTWAIN as a Device Independent Bitmap (DIB) in a single block of memory.  The drawbacks are that the Native Mode is limited by available memory, and it does not have the advantage of creating compressed images.  The functions that acquires images using the Native Transfer Mode are DTWAIN_AcquireNative and DTWAIN_AcquireNativeEx.