Dynamic Web TWAIN - TWAIN ActiveX/Plug-in, Scanner COM Control
TWAIN ActiveX/Plug-in HTTP Control/SDK

OnPreTransfer

Description

Fired before a transfer begins.

Syntax

Object_OnPreTransfer()

Remarks

This is the place to read the properties of image information: ImageBitsPerPixel property, ImagePixelType property, ImageLength property, ImageWidth property, ImageXResolution property, ImageYResolution property, ImageLayoutDocumentNumber property, ImageLayoutFrameLeft property, ImageLayoutFrameTop property, ImageLayoutFrameRight property, ImageLayoutFrameBottom property, ImageLayoutPageNumber property, ImageLayoutFrameNumber property. 

This is also the place to call CancelAllPendingTransfers().

See Also

OnPreAllTransfers Event, OnPostAllTransfers Event, OnPostTransfer Event, OnTransferCancelled Event, OnTransferError Event.

Sample

A JavaScript sample is provided.

<script language="javascript">

function OnPreTransferFunction() {
  //add your code here. This code snippet will be executed before each image is scanned.
}

</script>

<script language=javascript for=DynamicWebTwain1 event=OnPreTransfer>
 
   OnPreTransferFunction();
 
</script>


 

 

 

 













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