qgraphicsview に基本的な qtimer を実装しようとしていますが、機能していないようです。
これが私のmain.cppコードです:
int main(int argc, char * argv[]) {
QApplication app(argc, argv);//should stay on the stack
QGraphicsScene * scene = new QGraphicsScene();//this is the scene -- the canvas that holds everything!
// a view just adds stuff to the scene in that view port
QGraphicsView * view = new Game(scene);//create a new view
return app.exec();
}
そして、ここにビューヘッダーがあります... qtimerとadvance関数に注意してください
class View: public QGraphicsView {//inherits qwidget -- so we can make it full screen there
Q_OBJECT
public:
View(QGraphicsScene * _scene);//this is responsible for setting up the screen and instantiating several elements
~View();
protected://variables
QGraphicsScene * scene;
QTimer * timer;
protected://functions
int const int_height();//converts qreal to an int
int const int_width();
qreal const height();//
qreal const width();//this is the actual qreal floating point number
virtual void paintEvent(QPaintEvent * event) {};
void timerEvent(QTimerEvent * event) {cout << "HELLO << ads" << endl;};
virtual void keyPressEvent(QKeyEvent * event) {};
virtual void update() = 0;
void advance() { cout << "HELLO WORLD" << endl;}
private:
qreal _height;
qreal _width;
};
そして最後に、私のビュー実装コンストラクター:
View::View(QGraphicsScene * _scene) : QGraphicsView(_scene) {
scene = _scene;//set the scene which is the parent over this
this->showMaximized();
QRectF geometry = this->contentsRect();
_height = geometry.height();
_width = geometry.width();
this->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
this->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
scene->setSceneRect(0, 0, this->int_width(), this->int_height());
// this->centerOn(qreal(0), qreal(0));
this->setGeometry(0, 0, _width, _height);
this->setFixedSize(_width, _height);
timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), scene, SLOT(advance()));
timer->start(1000);
timer->setInterval(100);
}