The standard choice for general marketing materials.
I can provide the targeted code adjustments or optimization routines you need. Share public link
The code must be portable, working in both VB6 IDE and VBA (Excel/Access).
Private Sub cmdGenerate_Click() Dim qr As clsQRCode Set qr = New clsQRCode ' Configure the generator qr.EncodingMode = QR_MODE_BYTE qr.ErrorCorrectionLevel = QR_ECL_M ' M = 15% recovery qr.Version = 0 ' 0 auto-sizes based on text length ' Generate the matrix data If qr.Generate("https://example.com") Then ' Render the matrix to the PictureBox Call RenderQRCode(qr, picQR, 4) ' 4 pixels per module Else MsgBox "Data too long for QR code configuration.", vbCritical End If End Sub Private Sub RenderQRCode(objQR As clsQRCode, pic As PictureBox, ByVal ModuleSize As Long) Dim x As Long, y As Long Dim matrixSize As Long matrixSize = objQR.MatrixSize ' Prepare PictureBox pic.ScaleMode = vbPixels pic.AutoRedraw = True pic.Cls ' Resize PictureBox to fit the QR code plus a quiet zone margin pic.Width = pic.ScaleX((matrixSize + 8) * ModuleSize, vbPixels, pic.Container.ScaleMode) pic.Height = pic.ScaleY((matrixSize + 8) * ModuleSize, vbPixels, pic.Container.ScaleMode) ' Draw the QR Modules (Pixels) For y = 0 To matrixSize - 1 For x = 0 To matrixSize - 1 If objQR.IsDark(x, y) Then ' Draw black square pic.Line ((x + 4) * ModuleSize, (y + 4) * ModuleSize)-Step(ModuleSize, ModuleSize), vbBlack, BF Else ' Draw white square pic.Line ((x + 4) * ModuleSize, (y + 4) * ModuleSize)-Step(ModuleSize, ModuleSize), vbWhite, BF End If Next x Next y pic.Refresh End Sub Use code with caution. Pros and Cons of Pure VB6 Source Code vb6 qr code generator source code best
2. The GDI+ and FreeImage DLL Approach (The Best for High Performance)
Private Sub cmdGenerate_Click() Dim qr As QRMatrix Dim version As Integer Dim ecc As ECCLevel Dim cellSize As Integer
' Set default data txtData.Text = "https://www.example.com" The standard choice for general marketing materials
Use VB6 to send an HTTP request to a free API (like GoQR.me), download the image, and load it into a picture box.
If you are interested in exploring other automation tools, you can also look into how to bulk generate QR codes using online services, or learn more about what QR codes are to improve your projects. What to do next?
' Validate data If Trim(txtData.Text) = "" Then MsgBox "Please enter data to encode", vbExclamation Exit Sub End If Private Sub cmdGenerate_Click() Dim qr As clsQRCode Set
What are you encoding? (URLs, vCards, or raw binary data?)
Dim image As Bitmap image = qr.GenerateQRCode