[SOLVED]assign three slot to one signal.

mehdi.nine

Hi, i want assign three button's slot to a signal.
@
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
QSignalMapper *signalmapper;
Ui::MainWindow *ui;
void test(int);

signals:
void clickmee(int);
public slots:
void setclick1(int);
void setclick2(int);
void setclick3(int);

private:

};
@
i do this in constructor:
@
signalmapper = new QSignalMapper(this);
signalmapper->setMapping(ui->pushButton, 10);
signalmapper->setMapping(ui->pushButton1, 10);
signalmapper->setMapping(ui->pushButton1, 10);
connect(signalmapper, SIGNAL(mapped(int)),this,SIGNAL(clickmee(int)));
@

but when i run program in wrote:
@
QObject::connect: No such slot MainWindow::clickmee(int) in ..\Qsignal2\mainwindow.cpp:11
QObject::connect: (receiver name: 'MainWindow')
@
how can i assign slots to signal?

SGaist

Hi,

clickmee(int) is a signal not a slot

You can't assign slot to signals, only signals to slots and signals to signals.

mehdi.nine

how can i do that? i want to send parameter(line int) to button click event how can i do that? when i use setclick(int) the slot not working but when i using setclick() it worked. i want to pass a parameter.

SGaist

You're not really clear...

What parameter line ?

Also:
@signalmapper = new QSignalMapper(this);
signalmapper->setMapping(ui->pushButton, 10);
signalmapper->setMapping(ui->pushButton1, 10);<-- why also 10 ?
signalmapper->setMapping(ui->pushButton1, 10);<-- twice ?
connect(signalmapper, SIGNAL(mapped(int)),this,SIGNAL(clickmee(int))); <-- Now a signal connected to a signal but is it really what you want ?
@

mehdi.nine

oh sorry your right. i edit that. but now how can i assign all button's click to this signal i.e when i click on every buttons clickmee(int) is called? clickmee(int) is implement in .moc file so i can't use from that.

SGaist

It's done through the QSignalMapper.

But are you sure you want clickmee to be a signal ?

mehdi.nine

i want to do this
@void setclick1(int x)
{
if(x== 10)
{
....
}
else
{
...
}

}
@
but this function not firing.

SGaist

Because this slot is not connected.

Change your mapper connection to

@connect(signalmapper, SIGNAL(mapped(int)),this,SLOT(setclick1(int)));@

mehdi.nine

i do that but that's not working this is my new code:

@
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
public slots:
void click(QString);

private:
Ui::MainWindow *ui;
QSignalMapper *signalmaper;

};@

.cpp
@
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
signalmaper = new QSignalMapper(this);
signalmaper->setMapping(ui->pushButton, QString("dfdf"));
connect(signalmaper, SIGNAL(mapped(QString)),this, SLOT(click(QString)));
}

void MainWindow::click(QString x)
{
ui->pushButton->setText(x);
}
@

SGaist

You forgot to connect the button clicked signal.

@connect(ui->pushButton, SIGNAL(clicked()), signalMapper, SLOT(map()));@

mehdi.nine

id didn't know that. special thanks to you .

SGaist

Nothing special here, look at the "QSignalMapper":http://qt-project.org/doc/qt-4.8/qsignalmapper.html#details documentation