QListView: How Qt::Key_Return has the same action as doubleClicked ?

[sonichy]

Qt::Key:Arrow can move QListViewItem default, how to trigger signal with Key_Return ?

connect(ui->listView,SIGNAL(doubleClicked(QModelIndex)),this,SLOT(open(QModelIndex)));

connect(new QShortcut(QKeySequence(Qt::Key_Return),this), SIGNAL(activated()),this, SLOT(open(ui->listView->selectedIndexes().at(0)))); // No such slot

[m.sue]

Hi @sonichy

you cannot write something like open(ui->listView->selectedIndexes().at(0)) into a connect statement. It's illegal syntax. You will need to write the argument type instead, like you did above with open(QModelIndex).

-Michael.

[koahnig]

@sonichy said in QListView: How Qt::Key_Return has the same action as doubleClicked ?:

connect(new QShortcut(QKeySequence(Qt::Key_Return),this), SIGNAL(activated()),this, SLOT(open(ui->listView->selectedIndexes().at(0)))); // No such slot

signal activatedhas no parameter. You are trying to assign the signal to a specific element, which is not possible as you already indicate with your comment.

You need to define a slot routine with no parameter and handle all things in there. E.g.

class blibla
{
         Q_OBJECT 

...
public slots: 
     void sltKeyReturn (); 
}

void blibla::sltKeyReturn () 
{
      ui->listView->selectedIndexes().at(0);   // here you need to do something with it
}

blibla is basically the class you are working in, referred to in your connect with "this";

[J.Hilk]

@sonichy
additionaly to what the others said, this is a good situation to use a lambda.

QShortcut *sCut = new QShortcut(QKeySequence(Qt::Key_Return),this);
connect(sCut, &QShortcut::activated, this, [=]()->void{open(ui->listView->selectedIndexes().at(0));});
//I'm hower not sure, if open(int) is actually a valid function -> but if its not the compiler will complain.

[sonichy]

@koahnig
Use slot to trigger slot solve the problem indeed !

open(ui->listView->selectedIndexes().at(0));
Error : 'selectedIndexes' is a protected member of 'QListView'

Change to this:
open(ui->listView->selectionModel()->selectedIndexes().at(0));