Private Sub AddFinderPatterns() ' Top-Left DrawRect 0, 0, 7, 1 DrawRect 0, 0, 1, 7 DrawRect 0, 6, 7, 1 DrawRect 6, 0, 1, 7 DrawRect 2, 2, 3, 3
The most modern and efficient way to generate QR codes in VB6 without external DLLs is using the VbQRCodegen library , a pure VB6 implementation that produces vector-based images. vb6 qr code generator source code
' Add Data For i = 0 To UBound(Bytes) AddBits Bits, Bytes(i), 8 Next i Private Sub AddFinderPatterns() ' Top-Left DrawRect 0, 0,
Call AddFinderPatterns Call AddTimingPatterns Call AddData(bitStream) Comparison of Approaches Pure VB6 Library ActiveX SDK
For more advanced features like adding logos or complex formatting, you can use specialized SDKs or class modules.
Use a library like Chilkat or a simple XMLHTTP request to download the image. Comparison of Approaches Pure VB6 Library ActiveX SDK Dependencies None (Single .bas file) Requires DLL/OCX registration Requires internet access Ease of Use Customization Standard QR options Logos, colors, batching Depends on API provider Ideal For Portable applications Enterprise/Feature-rich apps Simple, connected tools