python+pyqt实现12306图片验证效果

#coding:utf-8 from PyQt4.QtGui import * from PyQt4.QtCore import * from push_button import * from PIL import Image  class Yanzheng(QWidget):   def __init__(self,parent=None):     super(Yanzheng,self).__init__(parent)     self.m_start_point=0 #x坐标     self.m_end_point=0 #y坐标     self.coordinate=[]     self.codeimage="./img/code.png"     self.connect(self,SIGNAL("addlable"),self.addpic)     self.main_layout=QFormLayout()     self.setLayout(self.main_layout)     self.resize(293,190)     self.pixmap=QPixmap("./img/cur.png")    def addpic(self):     print self.m_start_point,self.m_end_point     xpoint=self.m_start_point     ypoint=self.m_end_point-28     codepng2 = PushButton(self)     codepng2.loadPixmapreal('./img/cur.png')     codepng2.setGeometry(self.m_start_point,self.m_end_point,30,30)     codepng2.show()     #self.emit(SIGNAL("dellabel"),self.codepng2)     self.coordinate.append("%s,%s" %(xpoint,ypoint))     self.connect(codepng2,SIGNAL("clicked()"),lambda:self.dellabel(codepng2,xpoint,ypoint))     #self.update()   #删除标记   def dellabel(self,q,x,y):     print x,y     self.coordinate.remove("%s,%s" %(x,y))     q.close()    def mousePressEvent(self,event):     if (event.type()==QEvent.MouseButtonPress):       self.m_start_point = event.pos().x()-12       self.m_end_point= event.pos().y()-12       self.emit(SIGNAL("addlable"))     def paintEvent(self, event):     p = QPainter(self)     p.drawPixmap(0,0,QPixmap(self.codeimage))   if __name__=='__main__':   import sys   app=QApplication(sys.argv)   inputurl=Yanzheng()   inputurl.show()   sys.exit(app.exec_())