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Q193295: HOWTO: Reference an MTS Context Object From a COM DLL
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Q193295: HOWTO: Reference an MTS Context Object From a COM DLL

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Article: Q193295
Product(s): Microsoft FoxPro
Version(s): WINDOWS:6.0
Operating System(s): 
Keyword(s): 
Last Modified: 04-AUG-1999

-------------------------------------------------------------------------------
The information in this article applies to:

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

SUMMARY
=======

This article describes how to reference the Context Object of Microsoft
Transaction Server (MTS) in a Visual FoxPro Component Object Model (COM) DLL.

NOTE: This article is meant to be a brief overview providing the syntax necessary
to reference the MTS Object Context from a Visual FoxPro COM server. For a more
complete discussion on creating Visual FoxPro COM servers to work with Microsoft
Transaction Server, please see the article listed in the REFERENCES section.

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

There are two objects that need to be instantiated and referenced by the Visual
FoxPro custom COM DLL. The following statement creates the first object:

     oMTS=CREATEOBJECT("MTXAS.APPSERVER.1")

To create the reference to the current object's MTS Object Context use the
following command:

  

     oMTSCont=oMTS.GetObjectContext()

The following sample is the custom COM server 'ComTest1'. When built into a COM
DLL and placed in an MTS Package, you can run the following Client Code to test
it.

     ******************Server Code************************
     DEFINE CLASS MTSTEST AS CUSTOM OLEPUBLIC
        oMTS=.NULL.
        oMTSCont=.NULL.
        FUNCTION GetContext
           THIS.oMTS = CREATEOBJECT("MTXAS.APPSERVER.1")
           IF TYPE('THIS.oMTS')='O' THEN
              THIS.oMTSCont=THIS.oMTS.GetObjectContext()
              IF TYPE('THIS.oMTSCont')#'O' THEN
                 RETURN "oMTSCont FAILED"
              ENDIF
           ELSE
              RETURN "oMTS FAILED"
           ENDIF
           RETURN "oMTS & oMTSCont Succeeded"
        ENDFUNC
      ENDDEFINE
     *****************End Server Code**********************

     *****************Begin Client Code********************
     oX=CREATEOBJECT("ComTest1.MTSTest")
     Y=oX.getcontext()
     ? Y
     *****************End Client Code***********************

REFERENCES
==========

For more information, please see the following article in the Microsoft
Knowledge Base:

  Q191762 INFO: Visual FoxPro 6.0 MTS Web Pack 1.0 Readme File

Microsoft Transaction Server Documentation.

Additional query words: kbCOMt kbVFp600 kbMTS

======================================================================
Keywords          :  
Technology        : kbVFPsearch kbAudDeveloper kbVFP600
Version           : WINDOWS:6.0
Issue type        : kbhowto

=============================================================================

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