DOCUMENT:Q193295  04-AUG-1999  [foxpro]
TITLE   :HOWTO: Reference an MTS Context Object From a COM DLL
PRODUCT :Microsoft FoxPro
PROD/VER:WINDOWS:6.0
OPER/SYS:
KEYWORDS:

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The information in this article applies to:

 - Microsoft Visual FoxPro for Windows, version 6.0 
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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

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

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