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

[Scott Aron Bloom]

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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