Error: undefined reference to 'vtable for TimeGraphics'
-
Error: undefined reference to 'vtable for TimeGraphics'
This class can handle signals and slots and it has a slot called timeWidget_ticker
which is connected to a timer, which means once in a while this function would be called. This function will tick QLabel'''
class TimeGraphics: public QObject, public QGraphicsRectItem{
Q_OBJECT
public:
TimeGraphics();
public slots:
void timeWidget_ticker();
private:
QLabel* timeWidget;
};'''
TimeGraphics::TimeGraphics()
{QLabel *timeWidget = new QLabel; timeWidget->setStyleSheet("QLabel {color:white;}"); QTimer *systemTimer1 = new QTimer(this); connect(systemTimer1,SIGNAL(timeout()), this, SLOT(timeWidget_ticker)); systemTimer1->start();
}
void TimeGraphics::timeWidget_ticker()
{
QTime time = QTime::currentTime();
QString time_text = time.toString("hh : mm : ss");
if (time.second() % 2 == 0)
{
time_text[3]= ' ';
time_text[8]= ' ';
}
timeWidget->setText(time_text);
} -
It is solved after running qmake and clean.
But i can't create object onto Graphics with the code below'''
TimeGraphics *timerWidget = new TimeGraphics();
scene.addItem(timerWidget); -
Hi,
What do you mean by "can't create" ? What your expecting ? What are you getting ?