Hi,

In a previous question I found out about Robert Giesecke unmanaged exports which allows to call .net function from PB.

I got it working with longs and strings but can't make it work with arrays and structures.

For example in my VB.net dll I have the following code

    _
    Public Function GetCollectionImprimantes( ByRef liste_imprimantes As String()) As Int32
        Dim ll_ret As Int32
        Dim ll_index As Int32 = 0
        ll_ret = 1

        For Each ls_nom_imprimante As String In System.Drawing.Printing.PrinterSettings.InstalledPrinters
            ll_index += 1
            liste_imprimantes(ll_index) = ls_nom_imprimante
        Next

        Return (ll_ret)
    End Function

It's declared in PB 2017 with as a local external function

function long GetCollectionImprimantes(ref string liste[]) library "SFWHelpers.dll"

And used as

string liste[]
this.helpers.GetCollectionImprimantes(ref liste)

When i try to use arrays or structures I've got a PB error message

Error: Error calling external function %s at line ...snip...

The %s is what is actually written in the message

I know that for this peculiar example I can do it in native PB but it's just an example.

I know I could do COM visible dll with regasm (its what I did on the past) but I'd like to avoid that for ease of deployment and updates (thousands of computers, more than a hundred customers, most of them no IT on site)

I could for the side by side manifest but never managed to make it work (PB 12.5 at the time I tried it)

Am I doing it wrong ? Is that a bug I should report to support or maybe it's just not supported.

Regards,

François