PyQt - QStackedWidget

QStackedWidget 的功能類似於 QTabWidget。它也有助於有效利用視窗的客戶區。

QStackedWidget 提供了一個小部件堆疊，一次只能檢視其中一個小部件。它是一個基於 QStackedLayout 之上的有用佈局。

示例

一個父 QStackedWidget 物件包含多個子小部件。

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)

每個子小部件都可以擁有自己的表單元素佈局。QStackedWidget 本身無法在頁面之間切換。它與 QListWidget 當前選中的索引關聯。

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

這裡，QListWidget 的 currentRowChanged() 訊號連線到 display() 函式，該函式更改堆疊小部件的檢視。

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

完整的程式碼如下：

import sys
from PyQt4.QtCore import *
from PyQt4.QtGui 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()

以上程式碼產生以下輸出：