FILE: Mapiasst.exe: MAPI ASSERT Debug Routines

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The Mapiasst.exe sample, contains the following two files:

• Mapiasst.h
• Readme.txt

The header file, Mapiasst.h, was written to assist messaging developers in writing and debugging their applications.

Mapiasst.h includes the following three debug macros:

MAPI_ASSERT(HRESULT)

Pass MAPI_ASSERT a HRESULT and MAPI_ASSERT gives you basic error output and returns you to the debugger at the point where the error occurred.

Sample Output:

MAPI_ASSERT_EX(HRESULT)

MAPI_ASSERT_EX works similar to MAPI_ASSERT and gives you the same information along with the meaning of the HRESULT error code. Again, you will be returned back to the debugger at the point of error.

Sample Output:

SHOWTABLE(LPMAPITABLE)

SHOWTABLE uses the Tblvu32.dll function ViewMapiTable() to display the passed in MAPITable (LPMAPITABLE) in a GUI dialog box. This is a good tool for debugging your MAPITables.

NOTE: Tblvu32.dll is available from the Microsoft FTP site at ftp.microsoft.com\Developr\Mapi\Samples\Mfcapps.zip)

Here is a short sample of how these debugging routines may be used:

   /////// MAIN.CPP //////// 
   void main()
   {
     HRESULT         hr            = S_OK;
     LPMAPISESSION   lpSession      = NULL;
     LPMAPITABLE      lptMsgStores   = NULL;

     // Init MAPI
     hr = MAPIInitialize(0);

     MAPI_ASSERT_EX(hr);

     // Logon to Extended MAPI session
     hr = MAPILogonEx((ULONG)GetActiveWindow(),
               //"OFFLINE"
               NULL,
               NULL,
               NULL,
               &lpSession);

     MAPI_ASSERT_EX(hr);

     // Get a table of Message Stores from the Session.
     hr = lpSession->GetMsgStoresTable(NULL, &lptMsgStores);

     SHOWTABLE(lptMsgStores);

     MAPI_ASSERT_EX(hr);
   }