【Qt】英国のラウンデルを描画

比率は目測です。以下のメッセージが出るのでそのままは使わないでください
QPaintDevice: Cannnot destroy paint device that being painted

QPixmap takeRAFRoundel()  
{  
    // 画像のサイズ  
    int width  = 500;  
    int height = 500;  
    QPoint center(width/2,height/2);  
    QPixmap pix(width,height);  
    QPainter *p = new QPainter(&pix);  
    // 背景を白で塗りつぶす  
    p->setPen(*(new QColor(0xFF,0xFF,0xFF,0xFF)));  
    p->fillRect(0,0,width,height,*(new QBrush(QColor(0xFF,0xFF,0xFF))));  
    // 青い丸を描く  
    p->setPen(*(new QColor(0x00,0x24,0x7D,0xFF)));  
    p->setBrush(*(new QBrush(QColor(0x00,0x24,0x7D,0xFF))));  
    // drawArcでは塗りつぶしができない  
    // そのため、drawEllipseを使う  
    p->drawEllipse(center,500/2,500/2);  
    // 白い丸を描く  
    p->setPen(*(new QColor(0xFF,0xFF,0xFF,0xFF)));  
    p->setBrush(*(new QBrush(QColor(0xFF,0xFF,0xFF,0xFF))));  
    p->drawEllipse(center,325/2,325/2);  
    // 赤い丸を描く  
    p->setPen(*(new QColor(0xCE,0x11,0x26,0xFF)));  
    p->setBrush(*(new QBrush(QColor(0xCE,0x11,0x26,0xFF))));  
    p->drawEllipse(center,150/2,150/2);  
    return pix;  
}