Barcode

All you need is fonts to print. See http://www.barcode.com/barcodfonsof.html

emoreau, I would like to develop the software by myself, not purchasing another software. Thanks.

Hi Maxlen,

check this urls:
http://www.fpress.com/revista/Num9905/Barras.htm
http://www.fpress.com/revista/Num9905/fuentes.zip

The page is in spanish and it's a example for VFP.
but you can translate to VB6.

Why making hot water when it's already made ?

Thanks jmgs
But I really need to develop it from scratch.

have a look here:
https://www.experts-exchange.com/questions/10647841/Barcodes-using-VB.html
where i did post a vb solution for code 3 of 9 barcode
hope thats enough for you, if you need other symbologies, i cannot help you

************Code For Bas Module***************************
Sub DrawBarcode(ByVal bc_string As String, obj As Control)

Dim xpos!, y1!, y2!, dw%, th!, tw, new_string$

'define barcode patterns
Dim bc(90) As String
bc(1) = "1 1221"            'pre-amble
bc(2) = "1 1221"            'post-amble
bc(48) = "11 221"           'digits
bc(49) = "21 112"
bc(50) = "12 112"
bc(51) = "22 111"
bc(52) = "11 212"
bc(53) = "21 211"
bc(54) = "12 211"
bc(55) = "11 122"
bc(56) = "21 121"
bc(57) = "12 121"
                            'capital letters
bc(65) = "211 12"           'A
bc(66) = "121 12"           'B
bc(67) = "221 11"           'C
bc(68) = "112 12"           'D
bc(69) = "212 11"           'E
bc(70) = "122 11"           'F
bc(71) = "111 22"           'G
bc(72) = "211 21"           'H
bc(73) = "121 21"           'I
bc(74) = "112 21"           'J
bc(75) = "2111 2"           'K
bc(76) = "1211 2"           'L
bc(77) = "2211 1"           'M
bc(78) = "1121 2"           'N
bc(79) = "2121 1"           'O
bc(80) = "1221 1"           'P
bc(81) = "1112 2"           'Q
bc(82) = "2112 1"           'R
bc(83) = "1212 1"           'S
bc(84) = "1122 1"           'T
bc(85) = "2 1112"           'U
bc(86) = "1 2112"           'V
bc(87) = "2 2111"           'W
bc(88) = "1 1212"           'X
bc(89) = "2 1211"           'Y
bc(90) = "1 2211"           'Z
                            'Misc
bc(32) = "1 2121"           'space
bc(35) = ""                 '# cannot do!
bc(36) = "1 1 1 11"         '$
bc(37) = "11 1 1 1"         '%
bc(43) = "1 11 1 1"         '+
bc(45) = "1 1122"           '-
bc(47) = "1 1 11 1"         '/
bc(46) = "2 1121"           '.
bc(64) = ""                 '@ cannot do!
bc(65) = "1 1221"           '*



bc_string = UCase(bc_string)


'dimensions
obj.ScaleMode = 3                               'pixels
obj.Cls
obj.Picture = Nothing
dw = CInt(obj.ScaleHeight / 40)                 'space between bars
If dw < 1 Then dw = 1
'Debug.Print dw
th = obj.TextHeight(bc_string)                  'text height
tw = obj.TextWidth(bc_string)                   'text width
new_string = Chr$(1) & bc_string & Chr$(2)      'add pre-amble, post-amble

y1 = obj.ScaleTop
y2 = obj.ScaleTop + obj.ScaleHeight - 1.5 * th
obj.Width = 1.1 * Len(new_string) * (15 * dw) * obj.Width / obj.ScaleWidth


'draw each character in barcode string
xpos = obj.ScaleLeft
For n = 1 To Len(new_string)
    c = Asc(Mid$(new_string, n, 1))
    If c > 90 Then c = 0
    bc_pattern$ = bc(c)
   
    'draw each bar
    For i = 1 To Len(bc_pattern$)
        Select Case Mid$(bc_pattern$, i, 1)
            Case " "
                'space
                obj.Line (xpos, y1)-(xpos + 1 * dw, y2), &HFFFFFF, BF
                xpos = xpos + dw
               
            Case "1"
                'space
                obj.Line (xpos, y1)-(xpos + 1 * dw, y2), &HFFFFFF, BF
                xpos = xpos + dw
                'line
                obj.Line (xpos, y1)-(xpos + 1 * dw, y2), &H0&, BF
                xpos = xpos + dw
           
            Case "2"
                'space
                obj.Line (xpos, y1)-(xpos + 1 * dw, y2), &HFFFFFF, BF
                xpos = xpos + dw
                'wide line
                obj.Line (xpos, y1)-(xpos + 2 * dw, y2), &H0&, BF
                xpos = xpos + 2 * dw
        End Select
    Next
Next

'1 more space
obj.Line (xpos, y1)-(xpos + 1 * dw, y2), &HFFFFFF, BF
xpos = xpos + dw

'final size and text
obj.Width = (xpos + dw) * obj.Width / obj.ScaleWidth
obj.CurrentX = (obj.ScaleWidth - tw) / 2
obj.CurrentY = y2 + 0.25 * th
obj.Print bc_string

'copy to clipboard
obj.Picture = obj.Image
Clipboard.Clear
Clipboard.SetData obj.Image, 2



End Sub

*********** End Code For Bas Module *********************

on a form put up the following
A textbox for entering the text (text1) and a picture box to show the barcode (Picture1).
for the picture box change the following property
Scalemode = 3
AutoRedraw = true
FillStyle = Solid

********** Code for Form ****************************
Private Sub Text1_Change()
Call DrawBarcode(Text1, Picture1)

MinWidth = 2 * Text1.Left + Text1.Width
picwidth = 2 * Picture1.Left + Picture1.Width
formwidth = MinWidth
If picwidth > formwidth Then formwidth = picwidth
Form1.Width = formwidth


End Sub

************** End Code For Form *************************