So Listen Sie Nachrichten im Posteingang mit MAPI auf

Zusammenfassung

Extended MAPI kann für den Zugriff auf ein Postfach und das Manipulieren von Nachrichten verwendet werden. In diesem Artikel wird veranschaulicht, wie Sie mithilfe von MAPI die im Posteingang enthaltenen Nachrichten auflisten.

Weitere Informationen

Der folgende Beispielcode veranschaulicht die Verwendung von MAPI zum Auflisten der im Posteingang enthaltenen Nachrichten.

  • Öffnen Sie Visual C++, und erstellen Sie eine neue Win32-Konsolenanwendung.

  • Nennen Sie das Projekt "getpost Eingang".

  • Ausschneiden und Einfügen des folgenden Codes in die Datei "getinbox. cpp", die so generiert wurde, dass Sie die "Main"-Prozedur ersetzen, aber die Include-Dateien belassen.

  • Fügen Sie Mapi32. lib zu den Projekteinstellungen unter der Registerkarte Link hinzu.

  • Kompilieren Sie die Anwendung, und führen Sie Sie aus.

   #include <stdio.h>   #include <conio.h>   #include <mapix.h>   #include <mapiutil.h>   STDMETHODIMP ListMessages(   LPMDB lpMDB,   LPMAPIFOLDER lpInboxFolder);   STDMETHODIMP OpenDefaultMessageStore(   LPMAPISESSION lpMAPISession,   LPMDB * lpMDB);   STDMETHODIMP OpenInbox(   LPMDB lpMDB,   LPMAPIFOLDER *lpInboxFolder);   void main()    {   HRESULT       hRes;   LPMAPISESSION lpMAPISession = NULL;   LPMDB         lpMDB = NULL;   LPMAPIFOLDER  lpInboxFolder = NULL;   LPSPropValue  tmp = NULL;   hRes = MAPIInitialize(NULL);   if (FAILED(hRes)) goto quit;   hRes = MAPILogonEx(0,      NULL,//profile name      NULL,//password - This parameter should ALWAYS be NULL      MAPI_LOGON_UI, //Allow a profile picker box to show if not logged in      &lpMAPISession);//handle of session   if (FAILED(hRes)) goto quit;   hRes = OpenDefaultMessageStore(      lpMAPISession,      &lpMDB);   if (FAILED(hRes)) goto quit;   hRes = OpenInbox(      lpMDB,      &lpInboxFolder);   if (FAILED(hRes)) goto quit;   //Checking to see that we did get the Inbox   hRes = HrGetOneProp(      lpInboxFolder,      PR_DISPLAY_NAME,      &tmp);   if (FAILED(hRes)) goto quit;   printf("I managed to open the folder '%s'\n",tmp->Value.lpszA);   hRes = ListMessages(      lpMDB,      lpInboxFolder);   if (FAILED(hRes)) goto quit;   quit:   if (tmp) MAPIFreeBuffer(tmp);   UlRelease(lpInboxFolder);   UlRelease(lpMDB);   UlRelease(lpMAPISession);   MAPIUninitialize();   if (FAILED(hRes))   {      printf("Failed with hRes of %x\n",hRes);   }   printf("Hit any key to continue\n");   while(!_kbhit()){ Sleep(50);};   }  STDMETHODIMP ListMessages(   LPMDB lpMDB,   LPMAPIFOLDER lpInboxFolder)   {   HRESULT hRes = S_OK;   LPMAPITABLE lpContentsTable = NULL;   LPSRowSet pRows = NULL;   LPSTREAM lpStream = NULL;   ULONG i;   //You define a SPropTagArray array here using the SizedSPropTagArray Macro   //This enum will allows you to access portions of the array by a name instead of a number.   //If more tags are added to the array, appropriate constants need to be added to the enum.   enum {      ePR_SENT_REPRESENTING_NAME,      ePR_SUBJECT,      ePR_BODY,      ePR_PRIORITY,      ePR_ENTRYID,      NUM_COLS};   //These tags represent the message information we would like to pick up   static SizedSPropTagArray(NUM_COLS,sptCols) = { NUM_COLS,      PR_SENT_REPRESENTING_NAME,      PR_SUBJECT,      PR_BODY,      PR_PRIORITY,      PR_ENTRYID   };   hRes = lpInboxFolder->GetContentsTable(      0,      &lpContentsTable);   if (FAILED(hRes)) goto quit;    hRes = HrQueryAllRows(      lpContentsTable,      (LPSPropTagArray) &sptCols,      NULL,//restriction...we're not using this parameter      NULL,//sort order...we're not using this parameter      0,      &pRows);   if (FAILED(hRes)) goto quit;   for (i = 0; i < pRows -> cRows; i++)   {      LPMESSAGE lpMessage = NULL;      ULONG ulObjType = NULL;      LPSPropValue lpProp = NULL;      printf("Message %d:\n",i);      if (PR_SENT_REPRESENTING_NAME == pRows -> aRow[i].lpProps[ePR_SENT_REPRESENTING_NAME].ulPropTag)      {            printf("From: %s\n",pRows->aRow[i].lpProps[ePR_SENT_REPRESENTING_NAME].Value.lpszA);      }         if (PR_SUBJECT == pRows -> aRow[i].lpProps[ePR_SUBJECT].ulPropTag)      {            printf("Subject: %s\n",pRows->aRow[i].lpProps[ePR_SUBJECT].Value.lpszA);      }         if (PR_PRIORITY == pRows -> aRow[i].lpProps[ePR_PRIORITY].ulPropTag)      {            printf("Priority: %d\n",pRows->aRow[i].lpProps[ePR_PRIORITY].Value.l);      }      //the following method of printing PR_BODY will not always get the whole body/*    if (PR_BODY == pRows -> aRow[i].lpProps[ePR_BODY].ulPropTag)      {            printf("Body: %s\n",pRows->aRow[i].lpProps[ePR_BODY].Value.lpszA);      }*/       //PR_BODY needs some special processing...      //The table will only return a portion of the PR_BODY...if you want it all, we should      //open the message and retrieve the property. GetProps (which HrGetOneProp calls      //underneath) will do for most messages. For some larger messages, we would need to       //trap for MAPI_E_NOT_ENOUGH_MEMORY and call OpenProperty to get a stream on the body.      if (MAPI_E_NOT_FOUND != pRows -> aRow[i].lpProps[ePR_BODY].Value.l)      {         hRes = lpMDB->OpenEntry(            pRows->aRow[i].lpProps[ePR_ENTRYID].Value.bin.cb,            (LPENTRYID) pRows->aRow[i].lpProps[ePR_ENTRYID].Value.bin.lpb,            NULL,//default interface            MAPI_BEST_ACCESS,            &ulObjType,            (LPUNKNOWN *) &lpMessage);         if (!FAILED(hRes))         {            hRes = HrGetOneProp(               lpMessage,               PR_BODY,               &lpProp);            if (hRes == MAPI_E_NOT_ENOUGH_MEMORY)            {               char szBuf[255];               ULONG ulNumChars;               hRes = lpMessage->OpenProperty(                  PR_BODY,                  &IID_IStream,                  STGM_READ,                  NULL,                  (LPUNKNOWN *) &lpStream);               do               {                  lpStream->Read(                     szBuf,                     255,                     &ulNumChars);                  if (ulNumChars >0) printf("%.*s",ulNumChars,szBuf);               }               while (ulNumChars >= 255);               printf("\n");               hRes = S_OK;            }            else if (hRes == MAPI_E_NOT_FOUND)            {               //This is not an error. Many messages do not have bodies.               printf("Message has no body!\n");               hRes = S_OK;            }            else            {               printf("Body: %s\n",lpProp->Value.lpszA);            }         }      }      MAPIFreeBuffer(lpProp);      UlRelease(lpMessage);      hRes = S_OK;   }   quit:   FreeProws(pRows);   UlRelease(lpContentsTable);   return hRes;   }   STDMETHODIMP OpenInbox(   LPMDB lpMDB,   LPMAPIFOLDER *lpInboxFolder)   {   ULONG        cbInbox;   LPENTRYID    lpbInbox;   ULONG        ulObjType;   HRESULT      hRes = S_OK;   LPMAPIFOLDERlpTempFolder = NULL;   *lpInboxFolder = NULL;   //The Inbox is usually the default receive folder for the message store   //You call this function as a shortcut to get it's Entry ID   hRes = lpMDB->GetReceiveFolder(      NULL,      //Get default receive folder      NULL,      //Flags      &cbInbox,  //Size and ...      &lpbInbox, //Value of the EntryID to be returned      NULL);     //You don't care to see the class returned   if (FAILED(hRes)) goto quit;   hRes = lpMDB->OpenEntry(      cbInbox,                      //Size and...      lpbInbox,                     //Value of the Inbox's EntryID      NULL,                         //We want the default interface    (IMAPIFolder)      MAPI_BEST_ACCESS,             //Flags      &ulObjType,                   //Object returned type      (LPUNKNOWN *) &lpTempFolder); //Returned folder   if (FAILED(hRes)) goto quit;   //Assign the out parameter   *lpInboxFolder = lpTempFolder;   //Always clean up your memory here!   quit:   MAPIFreeBuffer(lpbInbox);   return hRes;   }   STDMETHODIMP OpenDefaultMessageStore(   LPMAPISESSION lpMAPISession,   LPMDB * lpMDB)   {   LPMAPITABLE pStoresTbl = NULL;   LPSRowSet   pRow = NULL;   static      SRestriction sres;   SPropValue  spv;   HRESULT     hRes;   LPMDB       lpTempMDB = NULL;   enum {EID, NAME, NUM_COLS};   static SizedSPropTagArray(NUM_COLS,sptCols) = {NUM_COLS, PR_ENTRYID, PR_DISPLAY_NAME};   *lpMDB = NULL;   //Get the table of all the message stores available   hRes = lpMAPISession -> GetMsgStoresTable(0, &pStoresTbl);   if (FAILED(hRes)) goto quit;   //Set up restriction for the default store   sres.rt = RES_PROPERTY; //Comparing a property   sres.res.resProperty.relop = RELOP_EQ; //Testing equality   sres.res.resProperty.ulPropTag = PR_DEFAULT_STORE; //Tag to compare   sres.res.resProperty.lpProp = &spv; //Prop tag and value to compare against   spv.ulPropTag = PR_DEFAULT_STORE; //Tag type   spv.Value.b   = TRUE; //Tag value   //Convert the table to an array which can be stepped through   //Only one message store should have PR_DEFAULT_STORE set to true, so only one will be returned   hRes = HrQueryAllRows(   pStoresTbl, //Table to query   (LPSPropTagArray) &sptCols, //Which columns to get   &sres, //Restriction to use   NULL, //No sort order   0, //Max number of rows (0 means no limit)   &pRow); //Array to return   if (FAILED(hRes)) goto quit;   //Open the first returned (default) message store   hRes = lpMAPISession->OpenMsgStore(      NULL,//Window handle for dialogs      pRow->aRow[0].lpProps[EID].Value.bin.cb,//size and...      (LPENTRYID)pRow->aRow[0].lpProps[EID].Value.bin.lpb,//value of entry to open      NULL,//Use default interface (IMsgStore) to open store      MAPI_BEST_ACCESS,//Flags      &lpTempMDB);//Pointer to place the store in   if (FAILED(hRes)) goto quit;   //Assign the out parameter   *lpMDB = lpTempMDB;   //Always clean up your memory here!quit:   FreeProws(pRow);   UlRelease(pStoresTbl);   if (FAILED(hRes))   {      HRESULT hr;      LPMAPIERROR lpError;       hr = lpMAPISession->GetLastError(hRes,0,&lpError);      if (!hr)      {         printf("%s\n%s\n",lpError->lpszError,lpError->lpszComponent);         MAPIFreeBuffer(lpError);      }   }   return hRes;   }

Informationsquellen

Lesen Sie den folgenden Artikel in der Microsoft Knowledge Base zum Abrufen von Nachrichten basierend auf bestimmten Kriterien mithilfe von MAPI-und EDK-Funktionen:

200181 Abrufen von Nachrichten auf der Grundlage eines bestimmten Kriteriums

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