TWAIN Functionality:
Property Functions
LTwain::AcquireCallBack
LTwain::AcquireList
LTwain::Acquire
LTwain::AcquireMulti
LTwain::CancelAcquire
LTwain::FastAcquire
LTwain::FreePropQueryStructure
LTwain::GetProperties
LTwain::GetSources
LTwain::IsAvailable
LTwain::QueryProperty
LTwain::SelectSource
LTwain::SetProperties
LTwain::StopFeeder