pyside+PIL+python2.7实现屏幕截屏

#encoding:utf-8
import time
import locale
import os
import imagesqrc
from PIL import ImageGrab
from PySide import QtCore
from PySide import QtGui

class ScreenGrab(QtGui.QWidget):
    def __init__(self):
        super(ScreenGrab,self).__init__()
        self.base_dir=‘‘
        self.setUI()
        
    def setUI(self):
        self.setGeometry(250,250,300,300)
        self.setWindowTitle(u‘TEST‘)
        self.setFixedSize(self.width(),self.height()); 
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap(":/snake.ico"),QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.setWindowIcon(icon)
        
        self.tuopan=QtGui.QSystemTrayIcon(self)
        self.tuopan.setIcon(icon)
        self.tuopan.setToolTip(‘made by Wen‘)
        self.tuopan.show()
        self.tuopan_menu()
        self.tuopan.activated.connect(self.tuopanEvent)
        
        self.dir_path=QtGui.QLineEdit(r‘C:\original_catalog‘)
        open_button=QtGui.QPushButton(u"打开")
        open_button.clicked.connect(self.dirDialog)
        submit_button=QtGui.QPushButton(u"截图")
        submit_button.clicked.connect(self.grab)
        h_layout=QtGui.QHBoxLayout()
        h_layout.addWidget(self.dir_path)
        h_layout.addWidget(open_button)
        v_layout=QtGui.QVBoxLayout()
        v_layout.addLayout(h_layout)
        v_layout.addWidget(submit_button)
        
        self.setLayout(v_layout)
    def tuopan_menu(self):
        self.restoreAction = QtGui.QAction(u"还原", self,triggered=self.showNormal)
        self.quitAction = QtGui.QAction(u"退出", self,triggered=QtGui.qApp.quit)
        self.trayIconMenu = QtGui.QMenu(self)
        self.trayIconMenu.addAction(self.restoreAction)
        self.trayIconMenu.addSeparator()
        self.trayIconMenu.addAction(self.quitAction)
        self.tuopan.setContextMenu(self.trayIconMenu)
    
    def tuopanEvent(self,type):
        if type==QtGui.QSystemTrayIcon.DoubleClick:
            self.showNormal()
        else:
            pass
        
    def closeEvent(self,event):
        if self.tuopan.isVisible():
            self.hide()
            event.ignore()
    def dirDialog(self):
        dir_path=QtGui.QFileDialog.getExistingDirectory(self,"choose directory","C:\Users\Administrator\Desktop")
        self.base_dir=dir_path
        self.dir_path.setText(self.base_dir)
        #print self.base_dir
        
    def grab(self):
        if not self.base_dir:
            if not os.path.exists(r‘C:\original_catalog‘):
                os.makedirs(r‘C:\original_catalog‘)
            else:
                self.base_dir=r‘C:\original_catalog‘
        TimeName=time.strftime(‘%Y%m%d_%H%M%S‘,time.localtime(time.time()))
        im=ImageGrab.grab()
        if not im.save(os.path.join(self.base_dir,TimeName)+‘.jpg‘,"jpeg"):
            QtGui.QMessageBox.information(self,u"截屏工具",u"截屏成功!!")
        
        
        
        
if __name__==‘__main__‘:
    import sys
    app=QtGui.QApplication(sys.argv)
    mycode = locale.getpreferredencoding()  
    code = QtCore.QTextCodec.codecForName(mycode)  
    QtCore.QTextCodec.setCodecForLocale(code)  
    QtCore.QTextCodec.setCodecForTr(code)  
    QtCore.QTextCodec.setCodecForCStrings(code)
    main=ScreenGrab()
    main.show()
    sys.exit(app.exec_())