Microsoft XML Core Services (MSXML) 5.0 for Microsoft Office - XML Reference

popContext Method

Pops the last local context from the top of the stack.

[Script]

Script Syntax

objNSManager.popContext();

Parameters

None.

Example

   var oNSMgr;

   try
   {
      oNSMgr = new ActiveXObject("Msxml2.MXNamespaceManager.5.0");
      oNSMgr.declarePrefix( "sample", "urn:same uri");
      alert(oNSMgr.getURI("sample")); // "urn:same uri"
      oNSMgr.pushContext();
      oNSMgr.declarePrefix ("sample", "urn:new uri");
      alert(oNSMgr.getURI("sample")); // "urn:new uri"
      oNSMgr.popContext();
      alert(oNSMgr.getURI("sample")); // "urn:same uri"
   } catch(e)
   {
      alert("Error \n" + e);
   }
[Visual Basic]

Visual Basic Syntax

objNSManager.popContext

Parameters

None.

Example

   Dim oNSMgr As New Msxml2.MXNamespaceManager50
   oNSMgr.declarePrefix "sample", "urn:same uri"
   MsgBox oNSMgr.getURI("sample") ' "urn:same uri"
   oNSMgr.pushContext
   oNSMgr.declarePrefix "sample", "urn:new uri"
   MsgBox oNSMgr.getURI("sample") ' "urn:new uri"
   oNSMgr.popContext
      MsgBox oNSMgr.getURI("sample") ' "urn"same uri"
[C/C++]

C/C++ Syntax

HRESULT popContext();

Parameters

None.

C/C++ Return Values

S_OK
The value returned if successful.
E_FAIL
The value returned if no context is available to pop.

Example

   MSXML2::IMXNamespaceManagerPtr PtrIMXNamespaceManager;
   HRESULT hres;
   unsigned short WideCharBuffer[100];
   int BufferLength = 100;

   try
   {
      PtrIMXNamespaceManager.CreateInstance _
                             (__uuidof(MSXML2::MXNamespaceManager));
      PtrIMXNamespaceManager->declarePrefix(_T("sample"),_T("urn"));

      hres = PtrIMXNamespaceManager->_getURI(L"sample", NULL, _
                                     WideCharBuffer, &BufferLength);
      DisplayMessageToUser(_bstr_t(WideCharBuffer));

      PtrIMXNamespaceManager->pushContext();

      PtrIMXNamespaceManager->declarePrefix(_T("sample"),_T("urn2"));
      
      BufferLength = 100;
      hres = PtrIMXNamespaceManager->_getURI(L"sample", NULL, _
                                     WideCharBuffer, &BufferLength);
      DisplayMessageToUser(_bstr_t(WideCharBuffer));

      PtrIMXNamespaceManager->popContext();

      BufferLength = 100;
      hres = PtrIMXNamespaceManager->_getURI(L"sample", NULL, _
                                     WideCharBuffer, &BufferLength);
      DisplayMessageToUser(_bstr_t(WideCharBuffer));
      }
   catch(...)
   {
      DisplayMessageToUser("Error");
   }
}

void DisplayMessageToUser(char *Msg)
{
   ::MessageBox(NULL, Msg, _T("Message"), MB_OK);

Remarks

The popContext method removes all declarations from the top of the stack down to the declaration prior to the last pushContext method call. If no context is available to pop, popContext returns an error.

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See Also

[Script,Visual Basic]

Applies to: IVBMXNamespaceManager

[C/C++]

Applies to: IMXNamespaceManager