Sending a signal to my mainwindow

kitten

hi to everyone
i have a mainwindow and a qwidget. i create a qwidget class to in my mainwindow class
now i want to when a button on qwidget clicked i send a signal to my mainwindow and my mainwindow do a slot i define
how can i do it?
can you give me an example?

Franzk

Let your widget emit a signal when the button is pressed. Let then your main window connect to that signal.

@CustomWidget::CustomWidget()
{
// ...
connect(someButton, SIGNAL(clicked()), this, SIGNAL(somethingTriggered()));
}

MainWindow::MainWindow()
{
// ...
connect(myCustomWidget, SIGNAL(somethingTriggered()), this, SLOT(doSomethingUseful()));
}@

andre

Please follow the "tutorial":http://developer.qt.nokia.com/wiki/Basic_Qt_Programming_Tutorial on the Wiki on this.

maxim.prishchepa

@MyMainWindow(){
MyWidget * wdgt = new MyWidget(this);
connect(wdgt, SIGNAL(mySignal()), this, SLOT(onComeSignal()));
}

class MyWidget : public QWidget{ Q_OBJECT
public: MyWidget(QWidget * parent): QWidget(parent){
QPushButton * btn = new QPushButton(this);
connect(btn, SIGNAL(clicked (bool), this, SLOT(onClick(bool)));
}
private slots: onClick(bool){emit mySignal();}
signals: void mySignal();
}@