305 // ----------------------------------------------------------------------------

   306 // Adds a message into the top of the queue and sends the message if slot is available

   307 // ----------------------------------------------------------------------------

   308 //

   309 EXPORT_C TInt CMPXMessageQueue::AddFirst(const CMPXMessage* aMessage, TInt aError)

   310     {

   311     // aMessage should not be NULL and aError is KErrNone

   312     MPX_ASSERT(aMessage || aError);

   313     MPX_FUNC_EX("CMPXMessageQueue::AddFirst()");

   314     CMPXMessageItem* item(NULL);

   315     TRAPD(err, item = CMPXMessageItem::NewL(aMessage, aError));

   316     if (KErrNone==err)

   317         {

   318         iMsgs.AddFirst(*item);

   319 #ifdef _DEBUG

   320         MPX_DEBUG3("CMPXMessageQueue::AddFirst 0x%08x, items %d", this, ++iCount);

   321 #endif

   322         }//else failed to create message item.

   323     else

   324         {

   325         MPX_DEBUG2("CMPXMessageQueue::AddFirst Failed to create message item %d", err);

   326         }

   327     if (KErrNone!=err && KErrNone==iFailure)

   328         { // Set the failure code

   329         iFailure = err;

   330         }

   331     if (!iMsgRequest.IsNull())

   332         { // outstanding request

   333         Send();

   334         } // else client has not finished current message yet

   335     return err;

   336     }