Capture all button clicked from a widget

[alnorte]

Hi, I'm doing a simple exercise, but I have problems to capture any clicked signal that is emitted on this widget.

The widget is a screen keyboard with all buttons that we have in a keyboard. I've created all the buttons and the actions of each buttons, now I need introduce another condition, if the user don't push any button in a 50 seconds the key board it must be close, so I put a timer with a 50 second interval but I've to restart this timer when the user push any another button.

I can restart the timer in all slots of buttons but this method is not very elegance, I need something like mouseReleaseEvent but in this case I capture all clicked in the widget but out of buttons.

Any one can help me?

I need something global in a widget that capture all button click signal to restart the timer, can it be?

thanks for all.

[Jonny174]

Use QSignalMapper.

QSignalMapper *sm = new QSignalMapper( this );
 
// create buttons
QPushButton *b1 = new QPushButton( "A", this );
connect( b1, SIGNAL(clicked()), sm, SLOT(map()) );
...
 
// set mapping
sm->setMapping( b1, "A" );
...
 
connect( sm, SIGNAL(mapped(QString)), this, SLOT(keyboard(QString)) );
 
slot keyboard( const QString &key )
{
  // do something with key
  ...
 
  // restart timer
  ...
}

QSignalMapper *sm = new QSignalMapper( this );

// create buttons
QPushButton *b1 = new QPushButton( "A", this );
connect( b1, SIGNAL(clicked()), sm, SLOT(map()) );
...

// set mapping
sm->setMapping( b1, "A" );
...

connect( sm, SIGNAL(mapped(QString)), this, SLOT(keyboard(QString)) );

slot keyboard( const QString &key )
{
  // do something with key
  ...

  // restart timer
  ...
}

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[Lesiok]

Connect QAbstractButton::released signal of each button to QTimer::start slot.

[alnorte]

thanks for reply this thread, Lesiok I like your method but I don't know what I have to write in the code.

I've to do a single slot for all the buttons, or a slot for each button?

connect(*,SIGNAL(QAbstractButton::released),QTimer ,SLOT(start()));

something like that?

[Lesiok]

For every created button do :

QPushButton *b1 = new QPushButton( "A", this );
connect( b1, SIGNAL(clicked()), sm, SLOT(map()) );
connect( b1,SIGNAL(released()),&m_timer ,SLOT(start()));

QPushButton *b1 = new QPushButton( "A", this );
connect( b1, SIGNAL(clicked()), sm, SLOT(map()) );
connect( b1,SIGNAL(released()),&m_timer ,SLOT(start()));

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where m_timer is a QTimer hiding the keyboard after 50 seconds.

[alnorte]

Lesiok, following your advice I've solved the problem with a elegant code form,I guess there will be better but...

foreach(QPushButton *obj, this->findChildren<QPushButton *>())
        {
		qDebug()<<"obj -> "<<obj->objectName();
		connect(obj,SIGNAL(clicked()),&tmr,SLOT(start()));
	}

foreach(QPushButton *obj, this->findChildren<QPushButton *>())
        {
		qDebug()<<"obj -> "<<obj->objectName();
		connect(obj,SIGNAL(clicked()),&tmr,SLOT(start()));
	}

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