Changing tray Icon on signal

[__d4ve__]

Hi ,

I have trayIconApp class that has this connect() function to change tray icon

connect(&client, &Client::syncChanged, this, &TrayIconApp::onSyncChanged);

I have checked the connection is valid , setSync runs and "emit syncChanged request sent." get printed ,
signal declared under public.

void Client::setSync(bool sync)
{
    if (sync == true)
    {
        qDebug() << "emit syncChanged request sent.";
        emit syncChanged(sync);  // Emit the signal if 'sync' changes
    }
}

the following function not seems to run though sync value is set to true

void TrayIconApp::onSyncChanged(bool sync) {
     qDebug() << "onSyncChanged called with:" << sync;

    if (sync) {
        qDebug() << "Updating tray icon to connected.";
        updateTrayIcon_connected();
    } else {
        qDebug() << "Updating tray icon to terminated.";
        updateTrayIcon_terminated();
    }
}

I'm using :

Product: Qt Creator 13.0.0
Based on: Qt 6.6.0 (MSVC 2019, x86_64)
Built on: Apr 2 2024 12:11:52
From revision: b887825661

[jsulm]

@__d4ve__ said in Changing tray Icon on signal:

connect(&client, &Client::syncChanged, this, &TrayIconApp::onSyncChanged);

Where is "client" created? Do you maybe have another one somewhere?

[Pl45m4]

@__d4ve__ said in Changing tray Icon on signal:

if (sync == true)
{
    qDebug() << "emit syncChanged request sent.";
    emit syncChanged(sync);  // Emit the signal if 'sync' changes
}

Is it just for testing?
Otherwise it can be changed to

emit syncChanged(true);

since you never emit false anyway.

Where do you call this function? Are you blocking the event loop somewhere?

[jsulm]

@__d4ve__ said in Changing tray Icon on signal:

connect(&client, &Client::syncChanged, this, &TrayIconApp::onSyncChanged);

Where is "client" created? Do you maybe have another one somewhere?

[ChrisW67]

@__d4ve__ Further to @jsulm's question, you may find it useful to add this at the top of the TrayIconApp constructor/destructor

qDebug() << "Construct" << this;
qDebug() << "Destruct" << this;

and this in the slot:

qDebug() <<  this << "onSyncChanged called with:" << sync;

Then you will see which TrayIconApp object gets created and which object, if any, receives sent signals.

What is the life span of client? In your connect(), client appears to be a stack-based instance of the Client class.

[__d4ve__]

Client to instance instead of object and

Client->moveToThread(thread);

solved the problem