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：

来源：http://blog.csdn.net/jylonger/article/details/50903721