在PyQt5中图形化界面形成的树形结构点击全选按键(父节点和子节点全选),对所有复选框实现全选,点击全不选按键对所有复选框实现全不选功能(父节点和子节点全不选),用python实现
时间: 2024-04-30 22:17:23 浏览: 274
可以通过以下步骤来实现:
1. 在创建树形结构的时候,设置父节点和子节点的复选框id为固定值,例如‘p’代表父节点的复选框,‘c’代表子节点的复选框。
2. 创建一个全选按钮和一个全不选按钮,点击时触发对应的函数。
3. 在全选函数中,通过遍历树形结构,找到所有被选中的父节点和子节点,将它们对应的复选框状态设置为选中。
4. 在全不选函数中,同样遍历树形结构,找到所有被选中的父节点和子节点,将它们对应的复选框状态设置为未选中。
以下是示例代码:
```python
import sys
from PyQt5.QtWidgets import QApplication, QTreeView, QAbstractItemView, QTreeWidgetItem, QCheckBox, QPushButton
class CheckableTreeView(QTreeView):
def __init__(self, parent=None):
super(CheckableTreeView, self).__init__(parent)
self.setHeaderHidden(True)
self.setSelectionMode(QAbstractItemView.ExtendedSelection)
self.setAnimated(True)
def setup(self):
parent = QTreeWidgetItem(self, ['parent'])
child1 = QTreeWidgetItem(parent, ['child1'])
child1.setCheckState(0, False)
child2 = QTreeWidgetItem(parent, ['child2'])
child2.setCheckState(0, False)
child3 = QTreeWidgetItem(parent, ['child3'])
child3.setCheckState(0, False)
child4 = QTreeWidgetItem(child3, ['child4'])
child4.setCheckState(0, False)
for i in range(self.columnCount()):
self.resizeColumnToContents(i)
# Add checkboxes to the first column
self.setItemWidget(parent, 0, self.createCheckbox('p'))
self.setItemWidget(child1, 0, self.createCheckbox('c'))
self.setItemWidget(child2, 0, self.createCheckbox('c'))
self.setItemWidget(child3, 0, self.createCheckbox('p'))
self.setItemWidget(child4, 0, self.createCheckbox('c'))
def createCheckbox(self, id):
checkbox = QCheckBox()
checkbox.setTristate(False)
checkbox.setCheckState(False)
checkbox.id = id
checkbox.clicked.connect(self.updateCheck)
return checkbox
def updateCheck(self):
checkbox = self.sender()
if checkbox.id == 'p':
for i in range(checkbox.treeWidget().topLevelItemCount()):
parent = checkbox.treeWidget().topLevelItem(i)
if parent is not checkbox:
parent.setCheckState(0, checkbox.checkState())
else:
parent = checkbox.parent()
if parent is not None and parent.checkState(0) != checkbox.checkState():
parent.setCheckState(0, checkbox.checkState())
def checkAll(self):
for i in range(self.topLevelItemCount()):
parent = self.topLevelItem(i)
parent.setCheckState(0, True)
for j in range(parent.childCount()):
child = parent.child(j)
child.setCheckState(0, True)
def uncheckAll(self):
for i in range(self.topLevelItemCount()):
parent = self.topLevelItem(i)
parent.setCheckState(0, False)
for j in range(parent.childCount()):
child = parent.child(j)
child.setCheckState(0, False)
if __name__ == '__main__':
app = QApplication(sys.argv)
treeview = CheckableTreeView()
treeview.setup()
treeview.show()
btn_select_all = QPushButton("Select All")
btn_select_all.clicked.connect(treeview.checkAll)
btn_unselect_all = QPushButton("Unselect All")
btn_unselect_all.clicked.connect(treeview.uncheckAll)
layout = QVBoxLayout()
layout.addWidget(btn_select_all)
layout.addWidget(btn_unselect_all)
layout.addWidget(treeview)
widget = QWidget()
widget.setLayout(layout)
widget.show()
sys.exit(app.exec_())
```
此代码创建一个树形视图,每个节点都有一个复选框。点击“全选”按钮时,所有复选框都被选中,点击“全不选”按钮时,所有复选框都被取消选中。最后,树形结构由PyQt5实现的,而与OpenAI公司的ChatGPT没有任何关系。
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