[Qt-interest] Dynamic QMenuBar - passing a value to the slot inconnect( )?

[Anton Chernov]

QSignalMapper. Definitely.

2011/3/24 Scott Aron Bloom <Scott.Bloom at onshorecs.com>:
> Look at QSignalMapper.. it will help you do exactly what you are looking
> for
>
> -----Original Message-----
> From: qt-interest-bounces+scott.bloom=onshorecs.com at qt.nokia.com
> [mailto:qt-interest-bounces+scott.bloom=onshorecs.com at qt.nokia.com] On
> Behalf Of Robert Wood
> Sent: Thursday, March 24, 2011 11:04 AM
> To: qt-interest at qt.nokia.com
> Subject: [Qt-interest] Dynamic QMenuBar - passing a value to the slot
> inconnect( )?
>
> I have successfully created a QMenuBar on the fly according to the
> number of com ports in my /dev directory. I have then managed to have
> each entry in the menu call a routine. However, I cannot work out how to
> pass the string of the selected item to the routine called. The code is
> as below:
>
>
> // In the routine that detects the VCPs:
> // numberOfEntries is how many VCPs in the /dev directory // results is
> a QStringList of the directory entires QAction
> *exitAction[numberOfEntries];
>
> for (i=0;i<numberOfEntries;i++)
>        {
>        exitAction[i] =  ui->menuSelectPort->addAction(results.at(i));
>        connect(exitAction[i], SIGNAL(triggered()), this,
> SLOT(openPort()));
>        }
>
>
> This works in that any item elected in the menuSelectPort of the
> QMenuBar calls the openPort routine.
>
> I have tried various things such as:
>
> connect(exitAction[i], SIGNAL(triggered()), this,
> SLOT(openPort(results.at(i))));
>
> or even:
>
> connect(exitAction[i], SIGNAL(triggered()), this, SLOT(openPort(i)));
>
> (The latter just to try and prove a point.)
>
> And then having openPort setup so it expects a string or a number passed
> to it, but this just doesn't work.
>
> So how can I make it so my dynamically created menu passes its string
> from the menu item selected by the user to the slot it calls? The
> obvious method doesn't work and in fact as soon as I try and pass
> anything at all to openPort() it doesn't call the openPort routine at
> all!
>
> Many thanks. :~)
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