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 UCC/EAN 128 Barcode Code

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ebirming Posted - 05/12/2004 : 07:42:51

I've developed the code to generate UPC/EAN 128 bar codes in VB. If I gave you the code could you write it in to Print Preview?

My problem is I generate it in a PictureBox and then use the DrawPictureMemory to show it on the preview. Looks great on the Preview and prints just fine. However, when I export it to .PDF, all I get is a black box.


Eddie B.
8   L A T E S T    R E P L I E S    (Newest First)
hongdi Posted - 05/23/2014 : 10:19:32
I think this barcode creating post has been hijacked.

makaveiljojo Posted - 12/13/2013 : 02:56:41
Check the following two tutorials that might be helpful:
How to generate UPC-A in VB.NET
How to generate EAN-128 in VB.NET

thyui Posted - 07/17/2013 : 05:30:14
i have several years#180; experience in generating barcode, i think some turioals and articles might be helpful. you can google EAN-128 barcode, and some articles can be available. i can give you some if you need .
this is the tutorial of generating EAN-128 barcode , you can ,make it as reference and the tool if free for 30 days.
this is the barcode generator in c# and other formats, i think it might also be helpful

good luck!
susanyy Posted - 06/19/2013 : 04:48:25
Have you ever used this free VB barcode generator? It supports multiple barcode types including EAN-128, UPC-A, Code 39, QR Code etc.
hongdi Posted - 05/21/2013 : 06:31:30
I recommend you a link to free code to generate barcode images:

ebirming Posted - 07/27/2004 : 06:49:02
I tried not printing the white lines, but I still get the black box. FYI.

Eddie B.
ebirming Posted - 07/27/2004 : 06:37:40

I generate the bar code by drawing lines on a PictureBox. Here is the code (BOLBinary is a string of 0's and 1's):

    If Me.FormType = formVICSLaserQuality Then
        DLLBarCodeForm.bcBOLNum.DrawWidth = 1
        BarSpacing = 15
      Else                              '***** 2X WIDE FOR DOT MATRIX
        DLLBarCodeForm.bcBOLNum.DrawWidth = 2
        BarSpacing = 30
    End If
    For Dumb1 = 1 To Len(BOLBinary)
        tmpChar = Mid(BOLBinary, Dumb1, 1)

        If tmpChar = "0" Then
            BarColor = vbWhite
            BarColor = vbBlack
        End If

        DLLBarCodeForm.bcBOLNum.ForeColor = BarColor

        CurrentX = BarSpacing * Dumb1
        CurrentY = 0
        DLLBarCodeForm.bcBOLNum.Line (300 + CurrentX, CurrentY)-(300 + CurrentX, CurrentY2)
    Next Dumb1

Then, to print it to PrintPreview, I use the following code:

     Preview.DrawPictureMemory DLLBarCodeForm.bcBOLNum.Image, tempBOLNumLeft, topBOL + 300

I haven't tried NOT drawing the white lines... maybe this is the problem (I'll try it)? Let me know if you need more info. Thanks!
Eddie B.
Waty Thierry Posted - 06/25/2004 : 09:45:10
Could you send me your code that generate the output on the screen?
I will check and fix the PDF output.

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