python+pyqt实现12306图片验证效果

本文实例为大家分享了python实现12306图片验证效果的具体代码，供大家参考，具体内容如下

思路：在鼠标点击位置加一个按钮,然后再按钮中的点击事件中写一个关闭事件.

#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_())

效果图：

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