问题
I am very new in programming. Please help me in this regards. Thanks in advance.
Here is my code:
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def clear_table(self):
self.tableWidget_2.clearContents()
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(1920, 1080)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.tableWidget_2 = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget_2.setGeometry(QtCore.QRect(10, 100, 1800, 700))
self.tableWidget_2.setObjectName("tableWidget_2")
self.tableWidget_2.setColumnCount(3)
self.tableWidget_2.setRowCount(500)
# self.tableWidget_2.cellChanged.connect(self.c_current)
self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_2.setGeometry(QtCore.QRect(300, 20, 150, 50))
self.pushButton_2.setText("Import table")
self.pushButton_2.setObjectName("pushButton_2")
#####
###
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(10, 20, 150, 50))
self.pushButton.setText("Clear table")
self.pushButton.clicked.connect(self.clear_table)
self.pushButton.setObjectName("pushButton")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 18))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
output table:
For example, I want to paste this data table into the qt widget table:
1 2 3
6 7 8
10 11 12
Similarly I also want to copy out the whole data from qt table using CLT+C or mouse right button click and the copy. like this:
回答1:
If you only need internal copy and paste operations, you can use a local variable to store the item data (row, column and content), then use an event filter to trigger those operations.
In the following example I created two simple functions that can be called when using the keyboard shortcuts (ctrl+c or ctrl+v) or through a context menu.
When one or more items are selected, they can be copied.
If the "clipboard" has contents and one index is selected (the "current index"), those contents will be pasted relative to it.
from PyQt5 import QtCore, QtGui, QtWidgets
class Window(QtWidgets.QWidget):
def __init__(self):
super(Window, self).__init__()
self.model = QtGui.QStandardItemModel(10, 10)
self.tableView = QtWidgets.QTableView()
self.tableView.setModel(self.model)
self.tableView.installEventFilter(self)
layout = QtWidgets.QVBoxLayout(self)
layout.addWidget(self.tableView)
self.clipboard = []
def eventFilter(self, source, event):
if event.type() == QtCore.QEvent.KeyPress:
if event == QtGui.QKeySequence.Copy:
self.copySelection()
return True
elif event == QtGui.QKeySequence.Paste:
self.pasteSelection()
return True
elif event.type() == QtCore.QEvent.ContextMenu:
# a context menu for the copy/paste operations
menu = QtWidgets.QMenu()
copyAction = menu.addAction('Copy')
copyAction.triggered.connect(self.copySelection)
pasteAction = menu.addAction('Paste')
pasteAction.triggered.connect(self.pasteSelection)
if not self.tableView.selectedIndexes():
# no selection available, both copy and paste are disabled
copyAction.setEnabled(False)
pasteAction.setEnabled(False)
if not self.clipboard:
# no clipboard contents, paste is disabled
pasteAction.setEnabled(False)
menu.exec(event.globalPos())
return True
return super(Window, self).eventFilter(source, event)
def copySelection(self):
# clear the current contents of the clipboard
self.clipboard.clear()
selected = self.tableView.selectedIndexes()
rows = []
columns = []
# cycle all selected items to get the minimum row and column, so that the
# reference will always be [0, 0]
for index in selected:
rows.append(index.row())
columns.append(index.column())
minRow = min(rows)
minCol = min(columns)
for index in selected:
# append the data of each selected index
self.clipboard.append((index.row() - minRow, index.column() - minCol, index.data()))
def pasteSelection(self):
if not self.clipboard:
return
current = self.tableView.currentIndex()
if not current.isValid():
# in the rare case that there is no current index, use the first row
# and column as target
current = self.model.index(0, 0)
firstRow = current.row()
firstColumn = current.column()
# optional: get the selection model so that pasted indexes will be
# automatically selected at the end
selection = self.tableView.selectionModel()
for row, column, data in self.clipboard:
# get the index, with rows and columns relative to the current
index = self.model.index(firstRow + row, firstColumn + column)
# set the data for the index
self.model.setData(index, data, QtCore.Qt.DisplayRole)
# add the index to the selection
selection.select(index, selection.Select)
# apply the selection model
self.tableView.setSelectionModel(selection)
if __name__ == '__main__':
import sys
app = QtWidgets.QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
Note that I didn't use your code, as that is the output generated from pyuic, which should never be modified. Those files are only meant to be imported, and the program logic must be implemented on a separate script. Read the documentation about using Designer to know how to correctly use UI files, otherwise just create the interface by subclassing the qwidget as done in my example.
来源：https://stackoverflow.com/questions/62993930/how-to-paste-and-copy-out-multiple-cells-values-in-qt-table-widget