如何获取检查的行QtableWidget
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【中文标题】如何获取检查的行QtableWidget【英文标题】：how to get checked rows QtableWidget 【发布时间】：2021-07-24 14:46:42 【问题描述】：我有这个代码。我想在单击删除按钮时删除勾选处于活动状态的任何行
from main import Ui_MainWindow
from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt
def set_cell_elements(rows, l):
ui.tableWidget.setRowCount(len(rows))
ui.tableWidget.setVerticalHeaderLabels(rows)
ui.tableWidget.verticalHeader().setDefaultAlignment(Qt.AlignVCenter)
ui.tableWidget.horizontalHeader().setDefaultAlignment(Qt.AlignCenter)
for r in range(0, len(l)):
for i in range (0, len(l[r])) :
text = l[r][i]
ui.tableWidget.setItem(r, i, QtWidgets.QTableWidgetItem(str(text)))
ui.tableWidget.item(r, i).setTextAlignment(Qt.AlignCenter)
item = ui.tableWidget.item(r, 0)
item.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
item.setCheckState(Qt.Unchecked)
item.checkState()
table_ = ui.tableWidget.horizontalHeader()
table_.setSectionResizeMode(i, QtWidgets.QHeaderView.ResizeToContents)
def delete_button():
pass
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
#=====================
rows = ['a', 'b', 'c', 'd', 'e', 'f']
l = [['Wade', 'Wade', 'Seth', 'Ivan', 'Riley'],
['Gilbert', 'Jorge', 'Dan', 'Brian', 'Roberto'],
['Ramon', 'Liam', 'Miles', 'Nathaniel', 'Lewis'],
['Ethan', 'Milton', 'Joshua', 'Claude', 'Glen'],
['Harvey', 'Blake', 'Antonio', 'Connor', 'Julian'],
['Aidan', 'Harold', 'Conner', 'Peter', 'Hunter']]
set_cell_elements(rows, l)
ui.delete_button.clicked.connect(delete_button)
MainWindow.show()
sys.exit(app.exec_())
我没有解决方案来获取勾选处于活动状态的行，您能帮帮我吗！？请
【问题讨论】：
为了以后参考，请不要因为一个帖子被关闭就删除它（关闭并不意味着删除，它们可以再次打开），而是编辑它并提供所要求的内容。 你已经在使用checkState()（即使它在那里什么都不做），你为什么不在delete_button函数中使用它呢？
如果启用行检查，checkState()的输出是2，但是我用同样的方法尝试删除数据时，输出是0。我是初学者，我做不到解决问题，我说可能方法不对，还有另一种解决方案-@musicamante
您是如何“尝试删除数据”的？另外，您是说要删除一行，而不是删除数据，这是两件不同的事情。无论您尝试了什么，请edit您的帖子并向我们展示，以便我们正确指导您，解释您做错了什么并向您展示可能的解决方案。
哦，对不起。我的错误是我写了这样的代码 if item.checkstate() is True: 因为它的值等于 2，所以这个条件不适用，我错了，我一直认为他假设大于 0 的数字为真。
【参考方案1】：
欢迎来到 ***！您的问题中有一些缺失的信息可以帮助您解决问题。我只能猜测您的代码中缺少的部分。
我猜您已经使用 Qt Designer 以图形方式创建您的 UI。我会假设你的 UI 看起来像这样：
编译后给出：
main.py
># -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'Ui_MainWindow.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again. Do not edit this file unless you know what you are doing.
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.verticalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
self.verticalLayoutWidget.setGeometry(QtCore.QRect(19, 16, 761, 521))
self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
self.verticalLayout.setSizeConstraint(QtWidgets.QLayout.SetMaximumSize)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setObjectName("verticalLayout")
self.delete_button = QtWidgets.QPushButton(self.verticalLayoutWidget)
self.delete_button.setObjectName("delete_button")
self.verticalLayout.addWidget(self.delete_button)
self.verticalLayout_2 = QtWidgets.QVBoxLayout()
self.verticalLayout_2.setObjectName("verticalLayout_2")
self.tableWidget = QtWidgets.QTableWidget(self.verticalLayoutWidget)
self.tableWidget.setBaseSize(QtCore.QSize(0, 0))
self.tableWidget.setRowCount(6)
self.tableWidget.setColumnCount(5)
self.tableWidget.setObjectName("tableWidget")
self.verticalLayout_2.addWidget(self.tableWidget)
self.verticalLayout.addLayout(self.verticalLayout_2)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 24))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.delete_button.setText(_translate("MainWindow", "Delete selected rows"))
最小的更改解决方案是：
解决方案 1.py
>from main import Ui_MainWindow
from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt
def set_cell_elements(rows, l):
ui.tableWidget.setRowCount(len(rows))
ui.tableWidget.setVerticalHeaderLabels(rows)
ui.tableWidget.verticalHeader().setDefaultAlignment(Qt.AlignVCenter)
ui.tableWidget.horizontalHeader().setDefaultAlignment(Qt.AlignCenter)
for r in range(0, len(l)):
for i in range (0, len(l[r])) :
text = l[r][i]
ui.tableWidget.setItem(r, i, QtWidgets.QTableWidgetItem(str(text)))
ui.tableWidget.item(r, i).setTextAlignment(Qt.AlignCenter)
item = ui.tableWidget.item(r, 0)
item.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
item.setCheckState(Qt.Unchecked)
item.checkState()
table_ = ui.tableWidget.horizontalHeader()
table_.setSectionResizeMode(i, QtWidgets.QHeaderView.ResizeToContents)
def delete_button():
for r in range(ui.tableWidget.rowCount(), 0, -1):
item = ui.tableWidget.item(r - 1, 0)
if item.checkState() == Qt.Checked:
ui.tableWidget.removeRow(r - 1)
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
#=====================
rows = ['a', 'b', 'c', 'd', 'e', 'f']
l = [['Wade', 'Wade', 'Seth', 'Ivan', 'Riley'],
['Gilbert', 'Jorge', 'Dan', 'Brian', 'Roberto'],
['Ramon', 'Liam', 'Miles', 'Nathaniel', 'Lewis'],
['Ethan', 'Milton', 'Joshua', 'Claude', 'Glen'],
['Harvey', 'Blake', 'Antonio', 'Connor', 'Julian'],
['Aidan', 'Harold', 'Conner', 'Peter', 'Hunter']]
set_cell_elements(rows, l)
ui.delete_button.clicked.connect(delete_button)
MainWindow.show()
sys.exit(app.exec_())
但是可以对您的代码进行更多的清理和简化：
解决方案 2.py
>from main import Ui_MainWindow
from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt
def set_cell_elements(row_headers, data_body):
ui.tableWidget.setRowCount(len(row_headers))
ui.tableWidget.setVerticalHeaderLabels(row_headers)
ui.tableWidget.verticalHeader().setDefaultAlignment(Qt.AlignVCenter)
ui.tableWidget.horizontalHeader().setDefaultAlignment(Qt.AlignCenter)
for (row_number, current_row) in enumerate(data_body):
for (column_number, current_text) in enumerate(current_row):
ui.tableWidget.setItem(
row_number, column_number,
QtWidgets.QTableWidgetItem(str(current_text))
)
ui.tableWidget.item(row_number, column_number).setTextAlignment(Qt.AlignCenter)
row_header = ui.tableWidget.horizontalHeader()
row_header.setSectionResizeMode(column_number, QtWidgets.QHeaderView.ResizeToContents)
item = ui.tableWidget.item(row_number, 0)
item.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
item.setCheckState(Qt.Unchecked)
def delete_button_action():
for current_row in range(ui.tableWidget.rowCount() - 1, -1, -1):
first_item = ui.tableWidget.item(current_row, 0)
state_current_row = first_item.checkState()
if state_current_row == Qt.Checked:
ui.tableWidget.removeRow(current_row)
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
row_headers = ('a', 'b', 'c', 'd', 'e', 'f')
data_body = (
('Wade', 'Wade', 'Seth', 'Ivan', 'Riley'),
('Gilbert', 'Jorge', 'Dan', 'Brian', 'Roberto'),
('Ethan', 'Milton', 'Joshua', 'Claude', 'Glen'),
('Ramon', 'Liam', 'Miles', 'Nathaniel', 'Lewis'),
('Harvey', 'Blake', 'Antonio', 'Connor', 'Julian'),
('Aidan', 'Harold', 'Conner', 'Peter', 'Hunter')
)
set_cell_elements(row_headers, data_body)
ui.delete_button.clicked.connect(delete_button_action)
MainWindow.show()
sys.exit(app.exec_())
但是您可以以更面向对象的方式对此进行编码。这样，只要您提供包含的小部件及其初始数据，您就可以将其插入 UI 中的任何位置，它就会自行处理：
解决方案 3.py
>import sys
from main import Ui_MainWindow
from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt
class Simple_table_editor(Ui_MainWindow):
def __init__(self, parent, row_headers, initial_data):
super().__init__()
self.setupUi(parent)
self.tableWidget.setRowCount(len(row_headers))
self.tableWidget.setVerticalHeaderLabels(row_headers)
self.tableWidget.verticalHeader().setDefaultAlignment(Qt.AlignVCenter)
self.tableWidget.horizontalHeader().setDefaultAlignment(Qt.AlignCenter)
for (row_number, current_row) in enumerate(initial_data):
for (column_number, current_text) in enumerate(current_row):
self.tableWidget.setItem(
row_number, column_number,
QtWidgets.QTableWidgetItem(str(current_text))
)
self.tableWidget.item(row_number, column_number).setTextAlignment(Qt.AlignCenter)
row_header = self.tableWidget.horizontalHeader()
row_header.setSectionResizeMode(column_number, QtWidgets.QHeaderView.ResizeToContents)
item = self.tableWidget.item(row_number, 0)
item.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
item.setCheckState(Qt.Unchecked)
self.delete_button.clicked.connect(self.delete_button_action)
def delete_button_action(self):
for current_row in range(self.tableWidget.rowCount() - 1, -1, -1):
first_item = self.tableWidget.item(current_row, 0)
state_current_row = first_item.checkState()
if state_current_row == Qt.Checked:
self.tableWidget.removeRow(current_row)
row_headers = ('a', 'b', 'c', 'd', 'e', 'f')
data_body = (
('Wade', 'Wade', 'Seth', 'Ivan', 'Riley'),
('Gilbert', 'Jorge', 'Dan', 'Brian', 'Roberto'),
('Ethan', 'Milton', 'Joshua', 'Claude', 'Glen'),
('Ramon', 'Liam', 'Miles', 'Nathaniel', 'Lewis'),
('Harvey', 'Blake', 'Antonio', 'Connor', 'Julian'),
('Aidan', 'Harold', 'Conner', 'Peter', 'Hunter')
)
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
table_editor = Simple_table_editor(MainWindow, row_headers, data_body)
MainWindow.show()
sys.exit(app.exec_())
如果我的猜测是错误的，而您打算做其他事情，请告诉我们更多细节。
【讨论】：
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