We use an RFC Call to a function module that processes a user dialog. This now works fine since we added a "Call Function 'SYSTEM_ATTACH_GUI'." statement in our ABAP code. But there is one small thing that we would like to avoid: at the user's desktop, the SAP Logon window is shown in the foreground each time our call is performed.

This is a problem of the SAP RFC interface which is independent of GuiXT. It does not occur if the user minimizes or closes the SAP Logon window.