1 # -*- coding: utf-8 -*-
2
3 import sys, time
4 from PyQt4.QtCore import *
5 from PyQt4.QtGui import *
6 x = 0
7 class Window(QWidget):
8 def __init__(self, parent = None):
9 QWidget.__init__(self, parent)
10 self.thread = Worker()
11
12 # 提示信息
13 self.xLable = QLabel("Number of xTimes:")
14 # 下拉框
15 self.spinBox = QSpinBox()
16 self.spinBox.setMaximum(100)
17 self.spinBox.setValue(10)
18 self.startButton = QPushButton(self.tr("&Start"))
19 # 布局
20 layout = QGridLayout()
21 layout.addWidget(self.xLable, 0, 0)
22 layout.addWidget(self.spinBox, 0, 1)
23 layout.addWidget(self.startButton, 0, 2)
24 self.setLayout(layout)
25 # 标题
26 self.setWindowTitle(self.tr("Threading"))
27
28 # 信号
29 self.connect(self.thread, SIGNAL("finished()"), self.finishSend)
30 self.connect(self.thread, SIGNAL("update(int)"), self.updateGUIStatus)
31 self.connect(self.startButton, SIGNAL("clicked()"), self.sendAdvMail)
32
33 def sendAdvMail(self):
34 self.spinBox.setReadOnly(True)
35 self.startButton.setEnabled(False)
36 #传递值到线程中
37 self.thread.render(self.spinBox.value())
38
39 def updateGUIStatus(self, leftTime):
40 self.xLable.setText(str(leftTime))
41
42 def finishSend(self):
43 self.spinBox.setReadOnly(False)
44 self.startButton.setEnabled(True)
45
46 class Worker(QThread):
47 def __init__(self, parent = None):
48 QThread.__init__(self, parent)
49 self.exiting = False
50 self.xTimes = 0
51
52 def __del__(self):
53 self.exiting = True
54 self.wait()
55
56 def render(self, xTimes):
57 self.xTimes = xTimes
58 self.start()
59
60 def run(self):
61 # Note: This is never called directly. It is called by Qt once the
62 # thread environment has been set up.
63 n = self.xTimes
64 while not self.exiting and n > 0:
65 time.sleep(1)
66 #该信号引起界面更新
67 n -= 1
68 self.emit(SIGNAL("update(int)"), n)
69
70
71 if __name__ == "__main__":
72 app = QApplication(sys.argv)
73 window = Window()
74 window.show()
75 sys.exit(app.exec_())
编辑器加载中...
