Doesn' t anyone know??! ActiveX dll........

[cturland]

I've posted this a few times before but never had a reply, its still causing me problems!

I'm trying to access the available printers in an ActiveX dll on a web interface. This is a bit of sample code:

Function AvailPrinters() as String

dim PrintData as Printers
dim sPrinters$

For Each PrintData in Printers
sPrinters$ = Printdata.DeviceName & " " & Printdata.driverName & ","
Next

AvailPrinters = sPrinters$

End Function

When I call this function from a VB app it returns a comma separated string of all the printers available. I then tried to include this dll in an ASP page and it returns an error saying that it can't access the printers.

Not sure if this is important but when I call the API function 'GetUserName' in my VB app it returns my username but when I call it in Internet Explorer through my dll I get 'SYSTEM'.

I'm really stuck, I've also tried launching an exe that used the dll through an ASP page but still no luck.

Any help would be really appreciated,
Rgds,
Carl

 

[Ruairi]

This doesn't neccesarily have anything to do with the specific problem you're having but wouldn't a 'Printers' object be a collection, not a single printer? Therefore, in the code below you are in effect saying "for each printers
collection in the printers collection" not "for each printer in the printers collection". It doesn't seem to make sense unless you change the variable declaration to
dim PrintData as Printer.

dim PrintData as Printers
    dim sPrinters$

    For Each PrintData in Printers

Ruairi

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[Swany]

The problem you are actually having (i think) is that when you use the ActiveX control in a VB program it uses your user as the current context and has access to the available printers.

When the control runs on the web server it runs as whatever user the service is running as (IUSR_MACHINE or localsystem or whatever) and doesn't have access to the printers.

Check the knowledge base for more information about printing from system services. I know there is info about it out there.