QT 图形的绘制

QT添加label的属性:

QLabel* lb1=new QLabel(this);
    lb1->setStyleSheet("color:blue");
    lb1->setText(getDex(ui->m_pb1,ui->m_pb2));
    lb1->move(ui->m_pb1->pos().x()+(ui->m_pb2->pos().x()-ui->m_pb1->pos().x())/2+1,ui->m_pb1->pos().y()+(ui->m_pb2->pos().y()-ui->m_pb1->pos().y())/2+1);

QT画线:

QPainter paint(this);
    paint.drawPixmap(0,0,WIN_WIGHT,WIN_HEIGHT,Pix);
    QColor balck(0,0,0);
    QPen pen(balck);
    pen.setWidth(2);
    paint.setPen(pen);
    QPoint point1(ui->m_pb1->pos().x()+ui->m_pb1->width()/2,ui->m_pb1->pos().y()+ui->m_pb1->height()/2);
    QPoint point2(ui->m_pb2->pos().x()+ui->m_pb2->width()/2,ui->m_pb2->pos().y()+ui->m_pb2->height()/2);
    paint.drawLine(point1,point2);

QT定时器的使用:

1.定时器的声明:

2.定时器和函数绑定：

 timer=new QTimer(this);
    connect(timer,SIGNAL(timeout()),this,SLOT(ppt()));

3.定时器的开始:

timer2->start(50);  //计时器开始

 

标签：lb1,pb1,QT,pb2,pos,paint,ui,图形,绘制
来源： https://blog.csdn.net/qq_41617848/article/details/94460716