Glad i could help, regards

this is how you show the return types with autoscript: after you open a script (like the clicked script of the command button on the main window), you click on Design > Options:

After that, when you type 

inv_swing. (mind the "." at the end, and wait a while), you'll see something like this, just start typing "of_"

Hi again,

I think I'm making things too complicated. Even though there are lots of incompatible funcions and attributes, lots of them are compatible:

Your real problem to start with is probably that you're calling some function before the nvo has been created. As I said before it's not a good idea to do the create in the Activate event, it's better to do in the open event (and assign it to an instance  nvo which you then use in other places).

I've changed the instance variable to NOT include the full path but a relative path, so the sample will work on your pc.

String is_assemblypath = ".\SwingLibrary.dll"

Your pdf manual explains the functions you can call on page 66 and further. Remember, that depending on the advanced option settings of the DLL Importer, the function names might have to be preceeded with "of_".

Use Autoscript in powerbuilder to see which function parameters and if you set it in the autoscript options, you can also see the return values.

I've added an example attached. At least it doesn't blow up, though of course I don't have the required hardware attached to some com port on my pc, so nothing will really work.

Hope it helps.

regards.

Dear, Miguel Leeuwe

Attach SwingLibrary.DLL.

This is Swing-U RFID Reader's dll.
The technical document is also attached.

Regards Miguel Leeuwe