' Wait for file creation Do While Dir(App.Path & "\qrcode.png") = "" DoEvents Loop
: You register the .ocx file, add it to your toolbox, and drag the control onto your form. Typical Code :
If your VB6 application always has an internet connection, you can generate QR codes without any external DLLs by calling a simple URL and downloading the image. Using the API: https://googleapis.com? Parameters: cht=qr (Type: QR Code) chs=300x300 (Size) chl=YourData (Content) VB6 Integration Snippet: qr code in vb6
For those wanting zero external dependencies, community-developed VB6 QR encoders exist. One notable example is the project (available on GitHub). It is a pure VB6 class module that implements the QR code specification for alphanumeric and byte mode up to version 10.
Before diving into the code, it is important to understand why QR codes are difficult in VB6. ' Wait for file creation Do While Dir(App
' Use the font encoder's function (example) Set QRImage = CreateObject("IDAutomation.QRCodeEncoder")
' Download the image Set http = CreateObject("MSXML2.XMLHTTP") http.Open "GET", strURL, False http.send Before diving into the code, it is important
You can also generate a QR code by calling a free web service like through the Chilkat API or standard WinHTTP calls to download the resulting image.
End Sub
' After adding clsQRCode.bas and QRMath.bas modules Dim qr As New clsQRCode Dim bmp As StdPicture