Problem with SLOT

fermatqt

hi!

i have a problem with a SLOT.
in my header file:

private slots:
    void getListiniArticolo(QString articolo);

then, when i used the right mouse button:

void Articoli::tblRight(const QPoint &pos) {
    int selRow = ui->tblArticoli->row(ui->tblArticoli->itemAt(pos));
    QString selArt = ui->tblArticoli->item(selRow, 1)->text();

    QMenu *menu = new QMenu(this);
    QAction* actionList = menu->addAction(QString("Listini articolo"));
    QAction* dtlArt = menu->addAction(QString("Dettaglio articolo"));

    connect(actionList, SIGNAL(triggered()), this, SLOT(getListiniArticolo(selArt)));

    menu->popup(ui->tblArticoli->viewport()->mapToGlobal(pos));
}

finally the implementation of the SLOT:

void Articoli::getListiniArticolo(QString articolo) {
    ListiniArticolo *la = new ListiniArticolo(articolo);
    la->show();
}

but i have always this error:

QObject::connect: No such slot Articoli::getListiniArticolo(QString(selArt))
QObject::connect:  (receiver name: 'Articoli')

where am I doing wrong??

mrjj

Hi
In connect statements u may ONLY give type of parameters

connect(actionList, SIGNAL(triggered()), this, SLOT(getListiniArticolo(selArt))); << selArt is a actual string. That you cannot do.

You can say
connect(actionList, SIGNAL(triggered()), this, SLOT(getListiniArticolo(QString))); << that is the type. this is ok.

But since Triggered() do NOT have a string, you cannot connect to a Slot that expects one.

so what you can do it

connect(actionList, SIGNAL(triggered()), this, SLOT(getListiniArticolo()));

void Articoli::getListiniArticolo() {
int selRow = ui->tblArticoli->row(ui->tblArticoli->itemAt(pos));
QString articolo= ui->tblArticoli->item(selRow, 1)->text();

ListiniArticolo *la = new ListiniArticolo(articolo);
la->show();

}

fermatqt

@mrjj

ok, i did this:

private slots:
    void getListiniArticolo();

private:
    QPoint point; // -> this is for function itemAt

and then:

void Articoli::tblRight(const QPoint &pos) {
    point = pos; // -> this is for function itemAt
    QMenu *menu = new QMenu(this);
    QAction* actionList = menu->addAction(QString("Listini articolo"));
    QAction* dtlArt = menu->addAction(QString("Dettaglio articolo"));
    menu->popup(ui->tblArticoli->viewport()->mapToGlobal(pos));
    connect(actionList, SIGNAL(triggered()), this, SLOT(getListiniArticolo()));
}

void Articoli::getListiniArticolo() {
    int selRow = ui->tblArticoli->row(ui->tblArticoli->itemAt(point));
    QString selArt = ui->tblArticoli->item(selRow, 1)->text();
    ListiniArticolo *la = new ListiniArticolo(selArt);
    la->show();
}

it seems to work properly!
it might be fine for you?

Tusovshik

How this part help me with Slot?
void Articoli::tblRight(const QPoint &pos) {
point = pos; // -> this is for function itemAt
QMenu menu = new QMenu(this);
QAction actionList = menu->addAction(QString("Listini articolo"));
QAction* dtlArt = menu->addAction(QString("Dettaglio articolo"));
menu->popup(ui->tblArticoli->viewport()->mapToGlobal(pos));
connect(actionList, SIGNAL(triggered()), this, SLOT(getListiniArticolo()));
}

mrjj

@fermatqt said in Problem with SLOT:

QPoint point;

That should work fine as long as not 2 different signals try to use it at same time.

fermatqt

@mrjj

ok perfect!
thank's a lot!

mrjj

@fermatqt
Super.
As a last note: ( just in case u didnt see)

In a slot, you can get the widget that send the signal
using the sender() function. Its is however always a ~~QWidget~~ QObject so you must try cast to the type
to get full access.
Like
void mainwin::slot_for_trigger() {
QAction* ac = qobject_cast<QAction* > ( sender() )
if (ac) {
do stuff with the Action...
}
}

fermatqt

@mrjj
fantastic!!
I did not know this!
again thank you so much!