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#1 Posted : Wednesday, January 10, 2007 10:29:18 PM(UTC)
Raymond Lee

Groups: Registered
Posts: 30


Hi,

I use Leadtools v14.5 and I found that RefBitmap is missing from the AxLTBARLib.AxLEADBarCode.
Such that each time I need to do RasterImageConverter.ToLeadBitmap(Image, "LTKRN14N.DLL"), it spends time on allocating memory for the image. I guess reference memory without doing a memory copy will speed up the barcode reading process.

The help specify to use "RefBitmap" for referencing the image, what should I do now?

By the way, What function I need to call to free up the memory after barcode read?

Rgds,
Raymond

 

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#2 Posted : Sunday, January 14, 2007 12:55:36 AM(UTC)

Qasem Lubani  
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Two copies must be created because you are using two kernels (.Net and the OCX). So the memory copy must take place.




You can free the image after using it with the OCX like this (this is C# code, but can be easily converted to VB.NET):


using Leadtools.Compatibility;


private void ToLeadBitmapTest(RasterImageViewer viewer)


{


   IntPtr
ocxBitmap = RasterImageConverter.ToLeadBitmap(viewer.Image, "LTKRN14N.DLL");


   // Do
something with ocxBitmap, for example, use LEADTOOLS COM objects to save it to a file.


   RasterImageConverter.FreeLeadBitmap(ocxBitmap, "LTKRN14N.DLL");


   System.Runtime.InteropServices.Marshal.FreeHGlobal(ocxBitmap);


}

 
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