PyQt4 implements drop-down menu to select and print out

This article mainly introduces in detail the PyQt4 implementation of the drop-down menu that can be selected and printed out. It has a certain reference value. Interested friends can refer to it.

This article shares PyQt4 with everyone. The specific code to implement the drop-down menu to be selected and printed is for your reference. The specific content is as follows

# -*- coding: cp936 -*- 
#QComboBox 窗口组件允许用户从列表清单中选择 
#这个例子中显示一个 QComboBox 和一个 QLabel 。组合框有5个选项的列表， 
#他们是Linux发行版的名称。标签显示从组合框选择的内容。 
from PyQt4 import QtGui, QtCore 
 
class Example(QtGui.QWidget): 
 
 def __init__(self): 
 super(Example, self).__init__() 
 
 self.initUI() 
 def initUI(self): 
 
 #self.label = QtGui.QLabel("Ubuntu", self) 
 
 #创建一个 QComboBox 窗口组件并增加5个选项。 
 combo = QtGui.QComboBox(self) 
 combo.addItem("Ubuntu") 
 combo.addItem("Mandriva") 
 combo.addItem("Fedora") 
 combo.addItem("Red Hat") 
 combo.addItem("Gentoo") 
 
 combo.move(50, 50) 
 #self.label.move(50, 150) 
 
 
 #当一个选项被选择，我们调用 onActivated() 方法。 
 self.connect(combo, QtCore.SIGNAL('activated(QString)'),self.onActivated) 
 
 
 self.setGeometry(250, 200, 350, 250) 
 self.setWindowTitle('QComboBox') 
 
 #在该方法中，我们把选择项设置到标签中，并调整标签的尺寸。 
 def onActivated(self, text): 
 print text 
 #self.label.setText(text) 
 #self.label.adjustSize() 
 
def main(): 
 app = QtGui.QApplication([]) 
 ex = Example() 
 ex.show() 
 app.exec_() 
 
 
if __name__ == '__main__': 
 main()

Rendering:

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