PyQt5 - QStacked 小部件

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  简述

  QStackedWidget类似于 QTabWidget。它还有助于有效使用窗口的客户区。

  QStackedWidget 提供了一堆小部件，一次只能查看其中一个。这是一个有用的布局，建立在QStackedLayout.
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  例子

  父 QStackedWidget 对象填充有多个子小部件。

  
  self.Stack = QStackedWidget (self)
  self.stack1 = QWidget()
  self.stack2 = QWidget()
  self.stack3 = QWidget()
  
  self.Stack.addWidget (self.stack1)
  self.Stack.addWidget (self.stack2)
  self.Stack.addWidget (self.stack3)
  

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  每个子小部件都可以有自己的表单元素布局。QStackedWidget 本身不能在页面之间切换。它与当前选择的 QListWidget 索引链接。

  
  self.leftlist = QListWidget ()
  self.leftlist.insertItem (0, 'Contact' )
  self.leftlist.insertItem (1, 'Personal' )
  self.leftlist.insertItem (2, 'Educational' )
  self.leftlist.currentRowChanged.connect(self.display)
  

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  在这里，QListWidget 的 currentRowChanged() 信号连接到 display() 函数，它改变了堆叠窗口小部件的视图。

  
  def display(self,i):
     self.Stack.setCurrentIndex(i)
  

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  完整的代码如下 -

  
  import sys
  from PyQt5.QtCore import *
  from PyQt5.QtGui import *
  from PyQt5.QtWidgets import *
  
  class stackedExample(QWidget):
     def __init__(self):
        super(stackedExample, self).__init__()
        self.leftlist = QListWidget ()
        self.leftlist.insertItem (0, 'Contact' )
        self.leftlist.insertItem (1, 'Personal' )
        self.leftlist.insertItem (2, 'Educational' )
        
        self.stack1 = QWidget()
        self.stack2 = QWidget()
        self.stack3 = QWidget()
        
        self.stack1UI()
        self.stack2UI()
        self.stack3UI()
        
        self.Stack = QStackedWidget (self)
        self.Stack.addWidget (self.stack1)
        self.Stack.addWidget (self.stack2)
        self.Stack.addWidget (self.stack3)
        
        hbox = QHBoxLayout(self)
        hbox.addWidget(self.leftlist)
        hbox.addWidget(self.Stack)
  
        self.setLayout(hbox)
        self.leftlist.currentRowChanged.connect(self.display)
        self.setGeometry(300, 50, 10,10)
        self.setWindowTitle('StackedWidget demo')
        self.show()
        
     def stack1UI(self):
        layout = QFormLayout()
        layout.addRow("Name",QLineEdit())
        layout.addRow("Address",QLineEdit())
        #self.setTabText(0,"Contact Details")
        self.stack1.setLayout(layout)
        
     def stack2UI(self):
        layout = QFormLayout()
        sex = QHBoxLayout()
        sex.addWidget(QRadioButton("Male"))
        sex.addWidget(QRadioButton("Female"))
        layout.addRow(QLabel("Sex"),sex)
        layout.addRow("Date of Birth",QLineEdit())
        
        self.stack2.setLayout(layout)
        
     def stack3UI(self):
        layout = QHBoxLayout()
        layout.addWidget(QLabel("subjects"))
        layout.addWidget(QCheckBox("Physics"))
        layout.addWidget(QCheckBox("Maths"))
        self.stack3.setLayout(layout)
        
     def display(self,i):
        self.Stack.setCurrentIndex(i)
        
  def main():
     app = QApplication(sys.argv)
     ex = stackedExample()
     sys.exit(app.exec_())
     
  if __name__ == '__main__':
     main()
  

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  上面的代码产生以下输出 -