I am trying to call a method inside a dll that I built in Visual basic. I am using the following statement, but am recieving a "GetDLLVersion() not found" error returned. It's finding the dll but not the function.

Call ("UCCRevenue.dll","GetDLLVersion()","s", True,, strRtnVersion)

To do the samething in VB Script (from an ASP page) I would do the following. Is the class getting in the way?

Set oNewObj = Server.CreateObject("UccRevenue.cUccRevenue")
Response.Write("UccRevenue instantiated...Version: " & oNewObj.GetDLLVersion() & " ")
Set oNewObj = Nothing

Please help.

We just experienced a similar issue with Microsoft SQL Server 2000's ODS interface. I believe the function might have one or two underscores preceding the name. Try that, or just take a look inside the DLL to see how VB named it.

-m-

: I am trying to call a method inside a dll that I built in Visual basic. I am
: using the following statement, but am recieving a "GetDLLVersion()
: not found" error returned. It's finding the dll but not the function.

: Call ("UCCRevenue.dll","GetDLLVersion()","s",
: True,, strRtnVersion)

: To do the samething in VB Script (from an ASP page) I would do the following.
: Is the class getting in the way?

: Set oNewObj = Server.CreateObject("UccRevenue.cUccRevenue")
: Response.Write("UccRevenue instantiated...Version: " &
: oNewObj.GetDLLVersion() & " ")
: Set oNewObj = Nothing

: Please help.

You probably have the Dependencies Walker utility that comes with VStudio. Open your DLL using this utility and check names of your exported functions. Most likely they look like __@34567 or __GetDLLVersion

I don't know how to avoid this in VB but in VC++ you will need to create .DEF file and list every exported function in this file. Also make sure you use standard calling conventions in your project, e.g. __stdcall. This will ensure that exported functions will have correct names.

: I am trying to call a method inside a dll that I built in Visual basic. I am
: using the following statement, but am recieving a "GetDLLVersion()
: not found" error returned. It's finding the dll but not the function.

: Call ("UCCRevenue.dll","GetDLLVersion()","s",
: True,, strRtnVersion)

: To do the samething in VB Script (from an ASP page) I would do the following.
: Is the class getting in the way?

: Set oNewObj = Server.CreateObject("UccRevenue.cUccRevenue")
: Response.Write("UccRevenue instantiated...Version: " &
: oNewObj.GetDLLVersion() & " ")
: Set oNewObj = Nothing

: Please help.