how would I pass value to SLOT function ?

mit_cruze

for(int i=0;i<2;i++)  
{
   for(int j=0;j<2,j++)
   {
        snapshot_action[k]=new QAction(this);
        snapshot_action[k]->setIconText("Snapshot");
        control_menu[k]->addAction(snapshot_action[k]);
        connect(snapshot_action[k], &QAction::triggered, this, &SimplePlayer::snap_fun);
   }
}

With initially k=0; I have omitted code which lays out four views each with snapshot action. ( for simplicity) Now the problem is when I press snapshot action button of any view I should know somehow that snapshot action button of THAT particular window is pressed. How can I ? How would I pass value of to my snap function? Do I need to store values of 'k' in some array? (some bad idea)

m.sue

Hi,
I usually do such things with the QSignalMapper class. E.g.:
In the header:

QSignalMapper m_mapWidget;

In the code:

	connect(&m_mapWidget,SIGNAL(mapped(int)),this,SLOT(snap_fun_k(int)));
loop k:
	connect(action,SIGNAL(triggered()),&m_mapWidget,SLOT(map()));
	m_mapWidget.setMapping(action,k);

-Michael.

Devopia53

The simplest way is something like this:

connect(snapshot_action[k], &QAction::triggered, [&, k]{ snap_fun(k); });

m.sue

Indeed! I see I am not yet used to the lambda-stuff :-)

mit_cruze

@Devopia53 Thanks Dude!

mit_cruze

@m.sue Thanks Dude! your solution Worked!!!