Article: Q216986
Product(s): Microsoft SourceSafe
Version(s): WINDOWS:5.0,6.0
Operating System(s):
Keyword(s): kbAutomation kbSSafe500bug kbSSafe600bug _IK
Last Modified: 01-MAY-2001
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The information in this article applies to:
- Microsoft Visual SourceSafe for Windows, versions 5.0, 6.0
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SYMPTOMS
========
When creating OLE Automation in C that communicates with Microsoft Visual
SourceSafe (VSS), if the program is created using VSS 5.0 OLE Automation and is
then run on a computer that is using VSS 6.0, QueryInterface for versions can
fail for the IID_IVSSVersion.
CAUSE
=====
The VSS 6.0 Automation ignores the 5.0 IID_IVSSVersion.
RESOLUTION
==========
If you have to create code that will run on computers using VSS 5.0 or VSS 6.0,
see the following steps.
1. Follow the steps in:
HOWTO: Write automation for computers using VSS 5 or VSS 6.
2. Create two separate programs and call the correct one based on what version
of VSS the computer is using.
STATUS
======
Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article.
MORE INFORMATION
================
Steps to Reproduce Behavior
---------------------------
1. Follow the steps in:
HOWTO: Open a SourceSafe Database with OLE Automation in C++
2. Add the following code at the top of the program:
#include <objbase.h>
#include <initguid.h>
#include <stdio.h>
#define MAKEHR(iStat) MAKE_HRESULT(SEVERITY_ERROR, FACILITY_ITF,(USHORT) (iStat))
3. Add the following code where the "// Add code here..." is:
IVSSVersions* pVersions = NULL;
IVSSVersion* pVersion = NULL;
IVSSItem* pItem = NULL;
IUnknown* pEnumerator = NULL;
IEnumVARIANT* pVariant = NULL;
Variant v;
unsigned long actual;
int error, nointerface;
BSTR Root = SysAllocString(L"$/");
VariantInit(&v);
pVdb->get_VSSItem(Root, FALSE, &pItem);
pItem->get_Versions(0, &pVersions);
pVersions->_NewEnum(&pEnumerator);
pEnumerator->QueryInterface(IID_IEnumVARIANT, (void **) &pVariant);
pEnumerator->Release();
pVariant->Next((unsigned long) 1, &v, &actual);
error = v.pdispVal->QueryInterface(IID_IVSSVersion, (void **) &pVersion);
nointerface = MAKEHR(E_NOINTERFACE);
if (error == nointerface)
printf("No Interface Error.\n");
4. Compile and run the program. You should get an error number returned from the
QueryInterface call with IID_IVSSVersion.
NOTE: This code should be created on a computer with VSS 5.0 and then run on a
computer with VSS 6.0. If you want to create and run the program on a VSS 6.0
computer, use IID_IVSSVersionOld instead of IID_IVSSVersion.
Additional query words: OLE Automation
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Keywords : kbAutomation kbSSafe500bug kbSSafe600bug _IK
Technology : kbSSafeSearch kbAudDeveloper kbSSafe600 kbSSafe500
Version : WINDOWS:5.0,6.0
Issue type : kbbug
Solution Type : kbpending
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