【PyQt4 实例30】改变鼠标形状

# -*- coding: utf-8 -*-
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import sys
QTextCodec.setCodecForTr(QTextCodec.codecForName("utf8"))

class EventFilter(QDialog):
    def __init__(self,parent=None):
        super(EventFilter,self).__init__(parent)
        self.setWindowTitle(self.tr("改变鼠标形状"))
        

        self.ArrowButton = QPushButton(self.tr("Arrow"))
        self.upArrowButton = QPushButton(self.tr("upArrow"))
        self.CrossButton = QPushButton(self.tr("upArrow"))

        layout = QGridLayout(self)
        layout.addWidget(self.ArrowButton,0,0)
        layout.addWidget(self.upArrowButton,0,1) 
        layout.addWidget(self.CrossButton,0,2) 
               
        self.connect(self.ArrowButton,SIGNAL("clicked()"),self.slotArrow)
        self.connect(self.upArrowButton,SIGNAL("clicked()"),self.slotupArrow)
        self.connect(self.CrossButton,SIGNAL("clicked()"),self.slotCross)
        
        self.resize(300,200)
        
    def slotArrow(self):
        self.setCursor(Qt.ArrowCursor)
    
    def slotupArrow(self):
        self.setCursor(Qt.UpArrowCursor)
    
    def slotCross(self):
        self.setCursor(Qt.CrossCursor)
    
app=QApplication(sys.argv)
dialog=EventFilter()
dialog.show()
app.exec_()