Private Function URLEncode(str As String) As String Dim i As Integer Dim result As String
' Execute Shell strCommand, vbHide
Private Type QRCodeMatrix size As Integer matrix() As Integer End Type Private Function GenerateSimpleQRCode(data As String) As QRCodeMatrix Dim qr As QRCodeMatrix Dim i As Integer, j As Integer qr code in vb6
ReDim qr.matrix(0 To qr.size - 1, 0 To qr.size - 1)
result = "" For i = 1 To Len(str) Dim ch As String ch = Mid(str, i, 1) Select Case ch Case "A" To "Z", "a" To "z", "0" To "9", ".", "-", "_", "~" result = result & ch Case " " result = result & "+" Case Else result = result & "%" & Right("0" & Hex(Asc(ch)), 2) End Select Next i Private Function URLEncode(str As String) As String Dim
' Save to file ActiveBarcode1.SaveImage App.Path & "\qrcode.bmp"
' Form with: ' - TextBox (Text1) for input ' - CommandButton (Command1) to generate ' - PictureBox (Picture1) to display ' - OptionButtons for size selection Private Sub Form_Load() ' Set up PictureBox Picture1.AutoRedraw = True Picture1.AutoSize = False Picture1.Width = 3000 Picture1.Height = 3000 "a" To "z"
result = "" For i = 1 To Len(str) ch = Mid(str, i, 1) If (ch >= "A" And ch <= "Z") Or (ch >= "a" And ch <= "z") Or (ch >= "0" And ch <= "9") Then result = result & ch Else result = result & "%" & Hex(Asc(ch)) End If Next i URLEncode = result End Function Step 1: Download ZXing Download ZXing.Core.dll or use the command-line tool. Step 2: Shell Execute Method Private Sub GenerateQRWithZXing() Dim strCommand As String Dim strText As String ' Save text to temporary file strText = Text1.Text Open App.Path & "\temp.txt" For Output As #1 Print #1, strText Close #1