qt 绘图

[kongyanmin]

我要在一个502*288屏幕上画图，要在屏幕左上角写一行字，在屏幕的中心画个圆，应该如何做呢，

[核动力蜗牛Killua]

不知道LZ什么意思..

帮顶吧...

[kongyanmin]

[Quote=引用 4 楼 killua_hzl 的回复:]
不知道LZ什么意思..

帮顶吧...
[/Quote]
1、问题是我要在502*288的屏幕上画图，在屏幕左上角画一行字，在中心画个圆，该如何做呢？
2、还有QPixmap(60,60)中60,指的是什么呢，参照物是什么呢，中心还是别的呢

[tingsking18]

1.QPainter drawText drawEllipse
2.QPixmap只是一个Pixmap，他又没画，就无所谓参照物喽

[kongyanmin]

	void CirclePoint::fillCircle()
		{
		size = QSize(myradius, myradius);
		mypixmap = new QPixmap(myradius+1, myradius+1);
		mypixmap->fill(Qt::transparent);
		QPainter painter(mypixmap);
		QLinearGradient myGradient;
		QRectF boundingRectangle(0,0,myradius,myradius);

		QPainterPath myPath;
		myPath.addEllipse(boundingRectangle);
		painter.setBrush(myGradient);
		painter.setOpacity(0.5);		
		painter.setPen(*mypen);				
		painter.drawPath(myPath);
		
		painter.save();
		QPainterPath myPath2;
		QColor minuteColor(0, 127, 127, 191);
		QMatrix matrix;
		painter.setBrush(minuteColor);		
		
		QPolygonF myPolygon;
		painter.translate(myradius/2,myradius/2);
		myPolygon<<QPointF(-(myradius/2-15),myradius/2-15)<<QPointF(0,0)
					<<QPointF(myradius/2-15,myradius/2-15)<<QPointF(0,-(myradius/2));
		painter.rotate(40);
		myPath2.addPolygon(myPolygon);
		painter.drawPath(myPath2);
		painter.restore();
		
		painter.save();
		QRectF boundingRectangle1(myradius/2-3,myradius/2-3,6,6);
		QPainterPath myPath1;
		myPath1.addEllipse(boundingRectangle1);
		QColor hourColor(127, 0, 127);
		painter.setBrush(hourColor);
		painter.setOpacity(0.5);
		painter.drawPath(myPath1);		
		}

[kongyanmin]

为什么没有人回答呢

[kongyanmin]

为什么没有人回答呢

[kongyanmin]

把问题想复杂了，其实很简单