Gambas ONE

BruceSteers wrote: ↑Monday 17th May 2021 4:53pm Can you get the source code?

If you have paid for it i'd ask for the source.
you may be able to re-write/convert it by hand

or if the dll is not useable then get the FreeBasic version of the library

vuott wrote: ↑Monday 17th May 2021 6:34pm If you have and want to use an external library, it means that you intend to use the functions and other resources contained in that library.
Generally in Gambas external functions of a shared library (.so), no DLL, can be called.
Such external libraries must be written in C language. In Gambas it is also possible to use external ".so" libraries, written in C ++, but their use is much more complex.

A conversion from the DLL library source can have two answers in my opinion:
- patiently convert each resource (and therefore the code contained in any external functions) of the DLL library into Gambas language (...this is not always possible);
- convert the library from "Dynamic Library " DLL into "Shared Library " .SO, so that then the external functions are called with the keyword "Extern " in your Gambas program.

Anyway, could you show us the source code of your dynamic library .DLL ?

Imports System.Xml

Public Class _
  AnyOfDiscountProduct

  Inherits DiscountProduct

  Public Overrides Function _
    Accepts(
      anItem As MultisaverDiscountItem) _
    As Boolean

    Return (
      _barCodes.Contains(anItem.Item.Product.BarCode) AndAlso
      Not Filtered(anItem))
  End Function

  Public Overrides Function _
    FromXml(
      aNode As XmlNode,
      aSupportedFilters As FilterFactory) _
    As DiscountProduct

    MyBase.FromXml(aNode, aSupportedFilters)

    For _
      Each child As XmlNode _
      In aNode.ChildNodes

      If (child.Name.ToLower() = "barcode") Then
        _barCodes.Add(child.InnerText.Trim())
      End If
    Next

    Return (Me)
  End Function

  Private _
    _barCodes As New List(Of String)
End Class

vuott wrote: ↑Monday 17th May 2021 7:02pm I do not know Visual studios 2019 language, but it seems to me a Basic dialect. Most likely it could be translated directly into Gambas.
It also seems to me that there are references to other functions or in any case to other resources external to that your posted code.

vuott wrote: ↑Monday 17th May 2021 7:06pm Sorry, have you ever thought about writing a Gambas code yourself, to solve that problem ?