How To Displaying the Compose IPM.Note Form

MORE INFORMATION

A key feature to any messaging client is the ability to send and read a message. It is up to you as the developer to decide whether or not your user are presented with your own specially designed form for sending and reading messages. If you choose to allow the user to use the default form of the messaging subsystem for the purpose of either sending or reading messages, the following code shows you one possible way of implementing this:

   HRESULT ShowForm ( LPMAPISESSION m_pSession,
                      LPMAPIFOLDER pFolder,
                      HWND m_hWnd )
   {
       HRESULT hRes = S_OK;

       enum {MSG_CLASS, MSG_STATUS, MSG_FLAGS, MSG_ACCESS };

       LPSPropValue pProps = NULL;
       ULONG        cProps,
                    ulObjType;


       LPMESSAGE          pMsg = NULL;
       LPMAPIFORMMGR      pFormMgr = NULL;
       LPMAPIFORMINFO     pFormInfo = NULL;
       LPPERSISTMESSAGE   pPersistMessage = NULL;
       ULONG              ulMessageToken = 0L,
                          cValues = 0L;
       LPSPropValue       pPropsMsg = NULL;

       //  Message properties tag array
       SizedSPropTagArray ( 4, sptMsgProps ) = { 4,
                                                 PR_MESSAGE_CLASS,
                                                 PR_MSG_STATUS,
                                                 PR_MESSAGE_FLAGS,
                                                 PR_ACCESS };

       hRes = pFolder -> CreateMessage ( NULL, 0L, &pMsg );

       if ( SUCCEEDED ( hRes ) )
           hRes = pMsg -> SaveChanges ( KEEP_OPEN_READWRITE );

       // Need to know certain properties of message for ShowForm.
       hRes = pMsg -> GetProps ( (LPSPropTagArray)&sptMsgProps,
                                 0L,
                                 &cValues,
                                 &pPropsMsg );

       // Get an IFormManager interface pointer
       if ( FAILED ( hRes = MAPIOpenFormMgr ( m_pSession, &pFormMgr ) ) )
           goto Quit;

       // Use the message class of the message to resolve to the correct
       //  message class.
       if ( FAILED ( hRes = pFormMgr->ResolveMessageClass (
                                    pPropsMsg[0].Value.lpszA,
                                    MAPIFORM_EXACTMATCH,
                                    NULL,
                                    &pFormInfo ) ) )
           goto Quit;

       // Create an instance of the form and store is in an
       // IPersistMessage interface pointer.
       if ( FAILED ( hRes = pFormMgr -> CreateForm ( m_hWnd,
                                          0L,
                                          pFormInfo,
                                          IID_IPersistMessage,
                                          (LPVOID*) &pPersistMessage ) ) )
          goto Quit;

       // Call the IPersistMessage::Save method.
       pPersistMessage -> Save ( pMsg, TRUE );

       // Prepare the form to be loaded by getting its token.
       if ( FAILED ( hRes = m_pSession -> PrepareForm ( &IID_IMessage,
                                          pMsg,
                                          &ulMessageToken ) ) )
           goto Quit;

       // Call the session object's ShowForm method. Each of the
       // properties we retreived above will be used in each of the
       // corresponding parameters in this call.
       if ( FAILED ( m_pSession -> ShowForm (
                                   m_hWnd,
                                   m_pMDB,
                                   pFolder,
                                   &IID_IMessage,
                                   ulMessageToken,
                                   0L,
                                   MAPI_NEW_MESSAGE,
                                   pPropsMsg[MSG_STATUS].Value.l,
                                   pPropsMsg[MSG_FLAGS].Value.l,
                                   pPropsMsg[MSG_ACCESS].Value.l,
                                   pPropsMsg[MSG_CLASS].Value.lpszA)))
            goto Quit;

       // Clean up and release all objects no longer needed in this
       // method. Be sure to return the value of hRes to the caller.

   Quit:

       if ( NULL != pMsg )
       {
           pMsg -> Release ( );
           pMsg = NULL;
       }

       if ( NULL != pFormMgr )
       {
           pFormMgr -> Release ( );
           pFormMgr = NULL;
       }

       if ( NULL != pFormInfo )
       {
           pFormInfo -> Release ( );
           pFormInfo = NULL;
       }

       if ( NULL != pPersistMessage )
       {
           pPersistMessage -> Release ( );
           pPersistMessage = NULL;
       }

       return hRes;
   }