ScanningEventHandler Delegate

'Declaration
 
Public Delegate Sub ScanningEventHandler( _
   ByVal sender As Object, _
   ByVal e As ScanningEventArgs _
)

'Usage
 
Dim instance As New ScanningEventHandler(AddressOf HandlerMethod)

public delegate void ScanningEventHandler( 
   object sender,
   ScanningEventArgs e
)

public: __gc __delegate void ScanningEventHandler( 
   Object* sender,
   ScanningEventArgs* e
)

public delegate void ScanningEventHandler( 
   Object^ sender,
   ScanningEventArgs^ e
)

sender: The object that issued the pre-scan event.
e: Arguments for the scanning event. This object contains a scanned image data object, a property for cancelling the scanning session, and a property indicating the number of pending transfers.

This is the delegate for pre-scan events. The TwainDevice class uses this delegate whenever a scan or transfer begins.