组合框QGroupBox

样式：

1 import sys
 2 from PyQt5.QtCore import Qt
 3 from PyQt5.QtGui import QPixmap
 4 from PyQt5.QtWidgets import QApplication, QWidget, QGroupBox, QRadioButton, QLabel, QHBoxLayout, QVBoxLayout
 5 
 6 
 7 class Demo(QWidget):
 8     def __init__(self):
 9         super(Demo, self).__init__()
10         self.groupbox_1 = QGroupBox('On and Off', self)  # 实例化组合框
11         self.groupbox_2 = QGroupBox('Change Color', self)
12 
13         self.red = QRadioButton('Red', self)  
14         self.blue = QRadioButton('Blue', self)
15         self.green = QRadioButton('Green', self)
16         self.yellow = QRadioButton('Yellow', self)
17         self.color_list = [self.red, self.blue, self.green, self.yellow]
18 
19         self.on = QRadioButton('On', self)  
20         self.off = QRadioButton('Off', self)
21 
22         self.pic_label = QLabel(self)  
23 
24         self.h1_layout = QHBoxLayout()
25         self.h2_layout = QHBoxLayout()
26         self.h3_layout = QHBoxLayout()
27         self.all_v_layout = QVBoxLayout()
28 
29         self.layout_init()
30         self.radiobutton_init()
31         self.label_init()
32 
33     def layout_init(self):
34         self.h1_layout.addWidget(self.on)
35         self.h1_layout.addWidget(self.off)
36         self.groupbox_1.setLayout(self.h1_layout)  #组合框中添加布局
37 
38         self.h2_layout.addWidget(self.red)
39         self.h2_layout.addWidget(self.blue)
40         self.h2_layout.addWidget(self.green)
41         self.h2_layout.addWidget(self.yellow)
42         self.groupbox_2.setLayout(self.h2_layout)
43 
44         self.h3_layout.addWidget(self.groupbox_1)
45         self.h3_layout.addWidget(self.groupbox_2)
46 
47         self.all_v_layout.addWidget(self.pic_label)
48         self.all_v_layout.addLayout(self.h3_layout)
49 
50         self.setLayout(self.all_v_layout)
51 
52     def radiobutton_init(self):
53         self.yellow.setChecked(True)  
54         for btn in self.color_list:
55             btn.clicked.connect(self.change_color_func)
56 
57         self.off.setChecked(True)  
58         self.off.toggled.connect(self.on_and_off_func)
59 
60     def label_init(self):  
61         self.pic_label.setPixmap(QPixmap('images/Off.png'))
62         self.pic_label.setAlignment(Qt.AlignCenter)
63 
64     def change_color_func(self):
65         if self.on.isChecked():
66             path = 'images/{}.png'.format([btn.text() for btn in self.color_list if btn.isChecked()][0])
67             self.pic_label.setPixmap(QPixmap(path))
68 
69     def on_and_off_func(self):
70         if self.on.isChecked():
71             path = 'images/{}.png'.format([btn.text() for btn in self.color_list if btn.isChecked()][0])
72             self.pic_label.setPixmap(QPixmap(path))
73         else:
74             self.pic_label.setPixmap(QPixmap('images/Off.png'))
75 
76 
77 if __name__ == '__main__':
78     app = QApplication(sys.argv)
79     demo = Demo()
80     demo.show()
81     sys.exit(app.exec_())