Question

我继承QtCore.QAbstractItemModel，显示树状结构。

在我尝试添加＆＃34;启用/禁用＆＃34;每个节点/行的功能。

有人知道如何禁用QTreeView小部件中的某些行吗？

更清楚一点，通过＆＃34;禁用＆＃34;，我的意思是灰色，仍可右键，可见，不可编辑，如图所示。

Answer 1

而不是QTreeWidget我使用了treeView。

我的代码：

import sys
from PyQt4 import QtGui
from PyQt4 import QtCore

class TREEWIDGET (QtGui.QWidget):

def __init__(self):
    super(TREEWIDGET, self).__init__()        
    self.initUI()        

def initUI(self):

    self.treeView = QtGui.QTreeView (self)
    self.treeView.setGeometry(QtCore.QRect(10, 10, 311, 321))
    self.treeView.setObjectName('treeWidget')

    self.model = QtGui.QStandardItemModel()
    self.addItems(self.model)
    self.treeView.setModel(self.model)
    self.treeView.expandAll ()
    self.treeView.setSelectionMode (QtGui.QAbstractItemView.ExtendedSelection)

    self.button_disable = QtGui.QPushButton(self)
    self.button_disable.setGeometry(QtCore.QRect(20, 340, 121, 23))
    self.button_disable.setObjectName('pushButton')
    self.button_disable.setText ('Disable')

    self.button_enable = QtGui.QPushButton(self)
    self.button_enable.setGeometry(QtCore.QRect(160, 340, 111, 23))
    self.button_enable.setObjectName('pushButton')
    self.button_enable.setText ('Ensable All')

    self.button_disable.clicked.connect (self.disable)
    self.button_enable.clicked.connect (self.enable)


    self.resize(350, 400)
    #self.addItems () 
    self.show()            

def addItems (self, parentWidget) :
    rootA        = QtGui.QStandardItem ('Joint1')
    parentWidget.appendRow (rootA)         
    cParent     = rootA      

    for loop in range (2, 6) :
        child   = QtGui.QStandardItem ('Joint' + str(loop))
        cParent.appendRow (child)         
        cParent     = child

    rootB        = QtGui.QStandardItem ('Joint_1')
    parentWidget.appendRow (rootB)         
    cParent     = rootB      

    for loop in range (2, 6) :
        child   = QtGui.QStandardItem ('Joint_' + str(loop))
        cParent.appendRow (child)         
        cParent     = child


def disable (self) :        
    selectedItem    = self.treeView.selectedIndexes  ()        
    for eachItem in selectedItem :   
        print   eachItem   
        currentItem     = eachItem.model().itemFromIndex(eachItem)
        currentItem.setEnabled(0)

def enable (self) :
    self.allItemElements    = [] 
    model           = self.treeView.model()        
    widget          = model.invisibleRootItem ()        
    existsItems     = self.collectItems (widget)

    for eachItem in existsItems :   
        eachItem.setEnabled(1)


def collectItems (self, widget) :
    itemCount   = widget.rowCount()         
    for itLoop in range (0, itemCount, 1) :            
        self.allItemElements.append (widget.child(itLoop))
        self.collectItems (widget.child(itLoop))                       
    return  self.allItemElements

def main():

    app = QtGui.QApplication(sys.argv)
    ex = TREEWIDGET()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()

Answer 2

这将禁用包含所有子项的行（与其他答案不同）。

import sys
from PyQt4 import QtGui
from PyQt4 import QtCore

class TREEWIDGET (QtGui.QWidget):

    def __init__(self):
        super(TREEWIDGET, self).__init__()        
        self.initUI()        

    def initUI(self):         
        self.treeWidget = QtGui.QTreeWidget(self)
        self.treeWidget.setGeometry(QtCore.QRect(10, 10, 311, 321))
        self.treeWidget.setObjectName('treeWidget')
        self.treeWidget.setSelectionMode (QtGui.QAbstractItemView.ExtendedSelection)

        self.button_disable = QtGui.QPushButton(self)
        self.button_disable.setGeometry(QtCore.QRect(20, 340, 121, 23))
        self.button_disable.setObjectName('pushButton')
        self.button_disable.setText ('Disable')

        self.button_enable = QtGui.QPushButton(self)
        self.button_enable.setGeometry(QtCore.QRect(160, 340, 111, 23))
        self.button_enable.setObjectName('pushButton')
        self.button_enable.setText ('Ensable All')

        self.button_disable.clicked.connect (self.disable)
        self.button_enable.clicked.connect (self.enable)

        self.resize(350, 400)
        self.addItems () 
        self.show()          

    def addItems (self) :
        parentA = QtGui.QTreeWidgetItem (self.treeWidget)
        parentA.setText (0, 'Joint1')   
        parentA.setExpanded (1)    
        cParentA    = parentA        
        for loop in range (2, 6) :
            childA = QtGui.QTreeWidgetItem (cParentA)
            childA.setText (0, 'Joint' + str(loop)) 
            childA.setExpanded (1)
            cParentA     = childA

        parentB = QtGui.QTreeWidgetItem (self.treeWidget)
        parentB.setText (0, 'Joint_1') 
        parentB.setExpanded (1)    
        cParentB     = parentB        
        for loop in range (2, 6) :
            childB = QtGui.QTreeWidgetItem (cParentB)
            childB.setText (0, 'Joint_' + str(loop))
            childB.setExpanded (1)
            cParentB     = childB        

    def disable (self) :        
        selectedItem    = self.treeWidget.selectedItems ()
        for eachItem in selectedItem :
            eachItem.setDisabled (1)            
            eachItem.setSelected (0)     

    def enable (self) :  
        self.allItemElements    = [] 
        widget              = self.treeWidget.invisibleRootItem()
        existsItems         = self.collectItems (widget)          
        if existsItems :  
            for eachItem in existsItems :
                eachItem.setDisabled (0)         

    def collectItems (self, widget) :            
        itemCount           = widget.childCount ()       
        for itLoop in range (0, itemCount, 1) :
            self.allItemElements.append (widget.child(itLoop))
            self.collectItems (widget.child(itLoop))                       
        return  self.allItemElements

def main():

    app = QtGui.QApplication(sys.argv)
    ex = TREEWIDGET()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()

Answer 3

覆盖flags后代的QAbstractItemModel方法。像这样：

def flags(self, index):

    if not index.isValid():
        return 0

    # Disable even rows, enable odd rows
    if index.row() % 2 == 0:
        return QtCore.Qt.NoItemFlags
    else:
        return QtCore.Qt.ItemIsEnabled

Answer 4

import sys
from PyQt4 import QtGui
from PyQt4 import QtCore

class TREEWIDGET (QtGui.QWidget):

    def __init__(self):
        super(TREEWIDGET, self).__init__()        
        self.initUI()        

    def initUI(self):         
        self.treeWidget = QtGui.QTreeWidget(self)
        self.treeWidget.setGeometry(QtCore.QRect(10, 10, 311, 321))
        self.treeWidget.setObjectName('treeWidget')
        self.treeWidget.setSelectionMode (QtGui.QAbstractItemView.ExtendedSelection)

        self.button_disable = QtGui.QPushButton(self)
        self.button_disable.setGeometry(QtCore.QRect(20, 340, 121, 23))
        self.button_disable.setObjectName('pushButton')
        self.button_disable.setText ('Disable')

        self.button_enable = QtGui.QPushButton(self)
        self.button_enable.setGeometry(QtCore.QRect(160, 340, 111, 23))
        self.button_enable.setObjectName('pushButton')
        self.button_enable.setText ('Ensable All')

        self.button_disable.clicked.connect (self.disable)
        self.button_enable.clicked.connect (self.enable)

        self.resize(350, 400)
        self.addItems () 
        self.show()          

    def addItems (self) :
        parentA = QtGui.QTreeWidgetItem (self.treeWidget)
        parentA.setText (0, 'Joint1')   
        parentA.setExpanded (1)    
        cParentA    = parentA        
        for loop in range (2, 6) :
            childA = QtGui.QTreeWidgetItem (cParentA)
            childA.setText (0, 'Joint' + str(loop)) 
            childA.setExpanded (1)
            cParentA     = childA

        parentB = QtGui.QTreeWidgetItem (self.treeWidget)
        parentB.setText (0, 'Joint_1') 
        parentB.setExpanded (1)    
        cParentB     = parentB        
        for loop in range (2, 6) :
            childB = QtGui.QTreeWidgetItem (cParentB)
            childB.setText (0, 'Joint_' + str(loop))
            childB.setExpanded (1)
            cParentB     = childB        

    def disable (self) :        
        selectedItem    = self.treeWidget.selectedItems ()
        for eachItem in selectedItem :
            eachItem.setDisabled (1)            
            eachItem.setSelected (0)     

    def enable (self) :  
        self.allItemElements    = [] 
        widget              = self.treeWidget.invisibleRootItem()
        existsItems         = self.collectItems (widget)          
        if existsItems :  
            for eachItem in existsItems :
                eachItem.setDisabled (0)         

    def collectItems (self, widget) :            
        itemCount           = widget.childCount ()       
        for itLoop in range (0, itemCount, 1) :
            self.allItemElements.append (widget.child(itLoop))
            self.collectItems (widget.child(itLoop))                       
        return  self.allItemElements

如何在QTreeview中禁用一行？

4 个答案: