Groups and Users Append, ChangePassword Methods Example (VC++)

This example demonstrates the Append method of Groups, as well as the Append method of Users by adding a new Group and a new User to the system. The new Group is appended to the Groups collection of the new User. Consequently, the new User is added to the Group. Also, the ChangePassword method is used to specify the User password.

// BeginGroupCpp.cpp  
// compile with: /EHsc  
#import "msadox.dll" no_namespace  
  
#include "iostream"  
using namespace std;  
  
inline void TESTHR(HRESULT x) {if FAILED(x) _com_issue_error(x);};  
  
int main() {  
   if (FAILED(::CoInitialize(NULL)) )  
      return -1;  
  
   HRESULT hr = S_OK;  
  
   // Define and initialize ADOX object pointers. These are in ADODB namespace.  
   _CatalogPtr m_pCatalog = NULL;  
   _UserPtr m_pUserNew = NULL;  
   _UserPtr m_pUser = NULL;  
   _GroupPtr m_pGroup = NULL;  
  
   // Define String Variables.  
   _bstr_t strCnn("Provider='Microsoft.JET.OLEDB.4.0';Data source = 'c:\\Northwind.mdb';jet oledb:system database='c:\\system.mdw'");  
  
   try {  
      TESTHR(hr = m_pCatalog.CreateInstance(__uuidof (Catalog)));  
      m_pCatalog->PutActiveConnection(strCnn);  
  
      // Create and append new group with a string.  
      m_pCatalog->Groups->Append("Accounting");  
  
      // Create and append new user with an object.  
      TESTHR(hr = m_pUserNew.CreateInstance(__uuidof(User)));  
      m_pUserNew->PutName("Pat Smith");  
      m_pUserNew->ChangePassword("", "Password1");  
      m_pCatalog->Users->Append(_variant_t((IDispatch *)m_pUserNew), "");  
  
      // Make the user Pat Smith a member of the Accounting group by creating and adding the  
      // appropriate Group object to the user's Groups collection. The same is accomplished if a User  
      // object representing Pat Smith is created and appended to the Accounting group Users collection  
      m_pUserNew->Groups->Append("Accounting");  
  
      // Enumerate all User objects in the catalog's Users collection.  
      long lUsrIndex;  
      long lGrpIndex;  
      _variant_t vIndex;  
      for ( lUsrIndex = 0 ; lUsrIndex < m_pCatalog->Users->Count ; lUsrIndex++ ) {  
         vIndex = lUsrIndex;  
         m_pUser = m_pCatalog->Users->GetItem(vIndex);  
         cout << "  " << m_pUser->Name << endl;  
         cout << "   Belongs to these groups:" << endl;  
  
         // Enumerate all Group objects in each User object's Groups collection.  
         if (m_pUser->Groups->Count != 0)  
            for ( lGrpIndex = 0 ; lGrpIndex < m_pUser->Groups->Count ; lGrpIndex++ ) {  
               vIndex = lGrpIndex;  
               m_pGroup = m_pUser->Groups->GetItem(vIndex);  
               cout << "     " << m_pGroup->Name << endl;  
            }  
         else  
            cout << "       [None]" << endl;  
      }  
  
      // Enumerate all Group objects in the default workspace's Groups collection.  
      for ( lGrpIndex = 0 ; lGrpIndex < m_pCatalog->Groups->Count ; lGrpIndex++ ) {  
         vIndex = lGrpIndex;  
         m_pGroup = m_pCatalog->Groups->GetItem(vIndex);  
         cout << "   " << m_pGroup->Name << endl;  
         cout << "    Has as its members:" << endl;  
  
         // Enumerate all User objects in each Group object's Users Collection.  
         if ( m_pGroup->Users->Count != 0)  
            for ( lUsrIndex = 0 ; lUsrIndex < m_pGroup->Users->Count ; lUsrIndex++ ) {  
               vIndex = lUsrIndex;  
               m_pUser = m_pGroup->Users->GetItem(vIndex);  
               cout << "    " << m_pUser->Name << endl;  
            }  
         else  
            cout << "      [None]" << endl;  
      }  
  
      // Delete new User and Group object because this is only a demonstration.  
      m_pCatalog->Users->Delete("Pat Smith");  
      m_pCatalog->Groups->Delete("Accounting");  
   }  
   catch(_com_error &e) {  
      // Notify the user of errors if any.  
      _bstr_t bstrSource(e.Source());  
      _bstr_t bstrDescription(e.Description());  
  
      printf("\n\tSource :  %s \n\tdescription : %s \n ", (LPCSTR)bstrSource, (LPCSTR)bstrDescription);  
   }  
   catch(...) {  
      cout << "Error occurred in include files...." << endl;  
   }  
  
   ::CoUninitialize();  
}