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#1 Posted : Tuesday, October 31, 2006 2:47:02 PM(UTC)


Groups: Registered
Posts: 22

Hello all.

I have a .NET project in which I'm using your active X control (LEAD Main 14.0).

I'm using this because the code is being ported from vb 6.0 and much of the functionality has changed (rubberband, GDI+ now, etc). Until I can implement a solution in .NET with the RasterImageView, I'll be using this control. I've ported the code over and everything works. I'll now need to add OCR to my application. I plan to use the .NET OCR classes. I need to know how I can get an IRasterImage from a LEAD Main control 14.0 or any other ideas as far as methods to get the bitmap from a LEAD main control and into the OCR engine.

Here is some code that I've been trying.

Dim ReturnArray as Object
ReturnArray = LEADMain.SaveArray(10, 24, 0)

Dim MyArray() as Byte
MyArray = CType(ReturnArray, Byte())
MsgBox("The contents " & MyArray.Length)

Dim ms as MemoryStream = new MemoryStream(MyArray)

Dim returnImage as Image = Image.FromStream(ms)<--Invalid argument exception

LEADRaster.Image = returnImage

Any ideas??

Thanks in advance.

Bryan James

Try the latest version of LEADTOOLS for free for 60 days by downloading the evaluation: https://www.leadtools.com/downloads

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#2 Posted : Wednesday, November 1, 2006 5:54:29 AM(UTC)


Groups: Manager, Tech Support
Posts: 367

To convert the bitmap from the main OCX to our .NET toolkit, use the RasterImageConverter.FromLeadBitmap Method.

If the Main OCX is called LEADMain, the code will look like this:
IntPtr prtToBitmap = new IntPtr(LEADMain.Bitmap);
Leadtools.IRasterImage img = RasterImageConverter.FromLeadBitmap(prtToBitmap, "LTKRN14N.DLL");

Amin Dodin

Senior Support Engineer
LEAD Technologies, Inc.
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