Wait for QCopChannel Receive event

Kashif

Hi,

Following is the scenario:

1> During application execution, at a point(a) my application sends some data to QCopChannel
2> Application needs to wait for acknowledgement
3> Process rest of the operation after acknowledgement

Is there any way to get the required results? I have codded the following but facing two issues:
1> Receiver does not receive data.
2> My application is hang in this state.

    orvOk_R2 = false;
    SendMsgR1();

    while ( !orvOk_R2 )    //orvOk_R2 will be true if get R2 message received
    {
        //Wait for R2 
    }

If i only use "SendMsgR1();" the receiver is receiving correct message.

PS, I am working on QTopiaapplication.

Thanks

SGaist

Hi,

Bad idea, your blocking the event loop from processing events.

You should rather use something like a state machine and the received to go further in your logic.

Kashif

Hi @SGaist,

I don't have much expertise to to use StateMachine api. I use the following code and its working but here I can not verify if the correct acknowledgement is received or its a bad acknowledgement.

    QEventLoop loop;
    QTimer timer;
    connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
    timer.start(1000);
    loop.exec();

Any simple solution instead?

Thanks

Kashif

Hi @SGaist,
I modified the code slightly and it worked, here is the code snippet for your expert advise:

    while ( !orvOk_R2 )
    {
        //Wait for R2 from AFC or timeout
        SendMsgR1();
        QEventLoop loop;
        QTimer timer;
        connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
        timer.start(1000);
        loop.exec();
    }

Thanks

Pablo J. Rogina

@Kashif if your issue is solved, please don't forget to mark your post as such. Thanks