Sap Gui 6.4 is not working with RFC calls from VB6

[former_member586131]

I have a VB6 application that calls a remote function call in Sap and

was working properly until we installed a new gui patches / upgrades.

Now it will not logon to Sap. It blows up on this

If Not sapConnection.Logon(0, True) Then

bLogOn = False

End If

We tried replacing 3 files from the ealier version of the gui

(wdobapi.ocx, wdtfuncs.ocx & wdtlog.OCX). Then it logs on, but blows up

when it tries to call the function module in Sap:

theFunc.Call

I also tried replacing the librfc32.dll file in the c:\windows\system32

directory with the earlier version, but then I get an out of memory

error on:

Set functionCtrl = CreateObject("SAP.Functions")

Any ideas on how this can be fixed?

Thanks,

Bob

[Former Member]

Hi Bob,

Have you checked if all passwords etc are Ok.

Also try to search in OSS there may be some note to fix it.

Regards,

Atish

[Former Member]

RFC

http://help.sap.com/saphelp_nw04/helpdata/en/22/042518488911d189490000e829fbbd/frameset.htm

http://help.sap.com/printdocu/core/Print46c/de/data/pdf/BCFESDE2/BCFESDE2.pdf

Minal

[former_member586131]

I don't think you understand the problem. If you reference this thread you will see exactly what I am doing:

This worked perfectly before we upgraded our gui to 6.4.

Bob

[former_member586131]

I have an update. We discovered that one of the output parameters on the function module was declared as CHAR20. We redefined it to be use MCDATA-LINE. Now all the export parameters have real table names and fields in their type declaration.

We restored the 3 files from the ealier version of the gui (wdobapi.ocx, wdtfuncs.ocx & wdtlog.OCX). Now it logs on, and no longer blows up when it tries to call the function module in Sap using:

theFunc.Call

However, all the export parameters are empty. Using SE37 in test mode I know this is not the case, but everywhere I use:

theFunc.Imports("O_VAR"), where o_var is the exporting parameter

in the VB code to get the returned data, I have no values.

[former_member586131]

Fix is to install sap gui patch 27.