效果如下:
代码如下:
'''
绘制不同类型的直线
'''
import sys,math
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import Qt
class DrawMultiLine(QWidget):
def __init__(self):
super(DrawMultiLine,self).__init__()
self.resize(300,300)
self.setWindowTitle('设置Pen的样式')
def paintEvent(self, event):
painter = QPainter()
painter.begin(self)
pen = QPen(Qt.red,3,Qt.SolidLine)
painter.setPen(pen)
painter.drawLine(20,40,250,40)
pen.setStyle(Qt.DashLine)
painter.setPen(pen)
painter.drawLine(20, 80, 250, 80)
pen.setStyle(Qt.DashDotDotLine)
painter.setPen(pen)
painter.drawLine(20, 120, 250, 120)
pen.setStyle(Qt.DotLine)
painter.setPen(pen)
painter.drawLine(20, 160, 250, 160)
pen.setStyle(Qt.DashDotDotLine)
painter.setPen(pen)
painter.drawLine(20, 200, 250, 200)
pen.setStyle(Qt.CustomDashLine)
pen.setDashPattern([1,10,5,8])
painter.setPen(pen)
painter.drawLine(20, 240, 250, 240)
size = self.size()
painter.end()
if __name__ == '__main__':
app = QApplication(sys.argv)
main = DrawMultiLine()
main.show()
sys.exit(app.exec_())