#coding=gbk
from PyQt4 import QtGui,QtCore
import random
class MyWidget(QtGui.QWidget):
def __init__(self,parent=None):
if parent is None:
self.app=QtGui.QApplication([])
super(MyWidget,self).__init__(parent)
self.setToolTip(‘双击控件改变线条颜色‘.decode(‘gbk‘))
if parent is None:
self.show()
self.app.exec_()
def paintEvent(self,event):
colors=[QtCore.Qt.blue,QtCore.Qt.black,QtCore.Qt.red,
QtCore.Qt.green,QtCore.Qt.darkRed,QtCore.Qt.yellow]
p=QtGui.QPainter(self)
p.setPen(QtGui.QColor(colors[random.randint(0,5)]))
p.drawLine(0,0,self.width(),self.height())
p.save()
def mouseDoubleClickEvent(self,event):
self.repaint()
class TestMyWidget(QtGui.QWidget):
def __init__(self,parent=None):
self.app=QtGui.QApplication([])
super(TestMyWidget,self).__init__(parent)
self.setGeometry(200,300,200,300)
self.setWindowTitle(‘自制控件试验‘.decode(‘gbk‘))
layv=QtGui.QVBoxLayout()
self.setLayout(layv)
gp=QtGui.QGroupBox()
layv.addWidget(gp)
laygp=QtGui.QGridLayout()
gp.setLayout(laygp)
mw=MyWidget(gp)
laygp.addWidget(mw)
btn=QtGui.QPushButton(‘Ok‘)
btn.clicked.connect(self.close)
layv.addWidget(btn)
self.show()
self.app.exec_()
if __name__==‘__main__‘:
TestMyWidget()
MyWidget【简单自制控件】