import sys
import time
from PyQt4.QtCore import *
from PyQt4.QtGui import *
####################################################################
class MyWindow(QWidget):
def __init__(self, *args):
QWidget.__init__(self, *args)
self.label = QLabel(" ")
layout = QVBoxLayout()
layout.addWidget(self.label)
self.setLayout(layout)
self.connect(self, SIGNAL("didSomething"),
self.update_label)
self.do_something()
def do_something(self):
self.emit(SIGNAL("didSomething"), "important", "information")
def update_label(self, value1, value2):
self.label.setText(value1 + " " + value2)
####################################################################
if __name__ == "__main__":
app = QApplication(sys.argv)
w = MyWindow()
w.show()
sys.exit(app.exec_())
可以改成如下形式，运行结构一样
import sys
import time
from PyQt4.QtCore import *
from PyQt4.QtGui import *
####################################################################
class MyWindow(QWidget):
def __init__(self, *args):
QWidget.__init__(self, *args)
self.label = QLabel(" ")
layout = QVBoxLayout()
layout.addWidget(self.label)
self.setLayout(layout)
self.connect(self, SIGNAL("didSomething"),
self.update_label)
self.do_something()
def do_something(self):
self.emit(SIGNAL("didSomething"), "important","information")
def update_label(self, *args):
label_str=''
for argv in args:
label_str+=' '+argv
self.label.setText(label_str)
####################################################################
if __name__ == "__main__":
app = QApplication(sys.argv)
w = MyWindow()
w.show()
sys.exit(app.exec_())
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