pyqt draw
#!/usr/bin/python
"""
ZetCode PyQt5 tutorial
In the example, we draw randomly 1000 red points
on the window.
Author: Jan Bodnar
Website: zetcode.com
"""
from PyQt5.QtWidgets import QWidget, QApplication
from PyQt5.QtGui import QPainter
from PyQt5.QtCore import Qt
import sys, random
class Example(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.setGeometry(300, 300, 300, 190)
self.setWindowTitle('Points')
self.show()
def paintEvent(self, e):
qp = QPainter()
qp.begin(self)
self.drawPoints(qp)
qp.end()
def drawPoints(self, qp):
qp.setPen(Qt.red)
size = self.size()
if size.height() <= 1 or size.height() <= 1:
return
for i in range(1000):
x = random.randint(1, size.width() - 1)
y = random.randint(1, size.height() - 1)
qp.drawPoint(x, y)
def main():
app = QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()