Qt的paintevent绘图 [复制链接]

Qt中的paintevent如何通过枚举变量来控制绘图
我的枚举定义为
enum {Yellow,Red,Green}Llightcolor;enum {Square,Round,Triangle,Ellipse}LShape;

void LED::paintEvent(QPaintEvent*event){    QPainter painter(this);    int side=qMin(width(),height());    painter.setViewport((width()-side)/2,(height()-side)/2,side,side);    painter.setRenderHint(QPainter::Antialiasing,true);    painter.setWindow(10,10,25,25);     if(LanoteVoltage=="1"&&LcathodeVoltage=="0"){
switch(Llightcolor)
    {
    case Yellow:
         painter.setBrush(QBrush(Qt::yellow,Qt::SolidPattern));
         break;
    case Red:
         painter.setBrush(QBrush(Qt::red,Qt::SolidPattern));
         break;
    case Green:
         painter.setBrush(QBrush(Qt::green,Qt::SolidPattern));
         break;
     default:
         QMessageBox::information(0,"Alarm",tr("警告：颜色输入错误!"));
         break;
    }
    switch(LShape)
    {
    case Square:
         painter.drawRect(12,12,20,20);
         break;
    case Round:
         painter.drawEllipse(12,12,20,20);
         break;
    case Triangle:
        static int triangle[3][2]={ {12,12},{32,17},{12,22}};
        painter.drawPolygon(QPolygon(3,&triangle[0][0]));
         break;
    case Ellipse:
         painter.drawEllipse(12,12,20,10);
         break;
    default:
         QMessageBox::information(0,"Alarm",tr("警告：形状输入错误!"));
         break;
    }
}但是他就是进不去，不会按这个值得改变而有对应的动作
        

好的，谢了

BTW 以后贴代码记得把代码加在code tag中，这样方便别人查看代码解决你的问题。

  switch 里面你怎么是enum的名称，你应该分别以这两种enum类型声明两个变量来控制绘制的颜色和形状