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Q191639: PRB: Report Command Used In Visual FoxPro COM DLL Causes Error

Article: Q191639
Product(s): Microsoft FoxPro
Version(s): WINDOWS:6.0
Operating System(s): 
Keyword(s): 
Last Modified: 12-AUG-1999

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, version 6.0 
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SYMPTOMS
========

Running the Report command within an in-process OLE component created in
Microsoft Visual FoxPro 6.0, returns an error indicating that the User-
Interface operation is not allowed at this time.

CAUSE
=====

The Report command calls the User Interface functions in order to properly run
the report. User Interface functions are no longer allowed in in- process
Component Object Model (COM) servers created in Microsoft Visual FoxPro.

RESOLUTION
==========

Create a Local COM server (.exe) in Visual FoxPro that can be called by the
in-process server to run the report, or build the original object as a Local COM
server (.exe).

STATUS
======

This behavior is by design.

MORE INFORMATION
================

The full text of the error message returned that follows, uses the file, class
and procedure name used in the Steps to Reproduce Behavior section of this
article. The path specified in the error message will also vary depending on the
file location.

  OLE IDispatch exception code 1031 from MyServer.MyClass: .runit
  e:\data\beta\ole\dll\dllmain.prg Error in line 4 User-Interface operation not
  allowed at this time. 1031..

Steps to Reproduce Behavior
---------------------------

1. Place the following code in a program file named DllMain.prg in a new project
  and build it as a COM DLL named MyServer.dll. Select Ignore when you build
  the .dll if the Project Manager reports that it can not find the report named
  rpt1.

        DEFINE CLASS MyClass AS CUSTOM OLEPUBLIC
           MyName="MyClass"
           PROCEDURE runit
              REPORT FORM rpt1 TO PRINTER NOCONSOLE NOWAIT
           ENDPROC
        ENDDEFINE

2. Place the following code in a new program file named CallIt.prg:

        oX=CREATEOBJECT("MyServer.MyClass")
        oX.RunIt
        RELEASE oX

3. Run the CallIt program.

REFERENCES
==========

Visual FoxPro Help; search on "sys(2335)"; topic: "SYS(2335) - Unattended Server
Mode"

Additional query words: kbDSupport OLE Print kbDSE kbVFp600 kbCOMt kbPrinting kbReportWriter

======================================================================
Keywords          :  
Technology        : kbVFPsearch kbAudDeveloper kbVFP600
Version           : WINDOWS:6.0
Issue type        : kbprb
Solution Type     : kbnofix

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