QTableWidget - Retrieve content from a cell

[Ninja2112]

Hi, guys...

I have a qtablewidget with 3 columns that shows registers from my database.
Each row has a checkbox in the 3rd column.
Im trying to retrieve the content in the first cell that has the checkbox checked.
Here is the code :

items = []
for i in range(self.tblparc.rowCount()):
  item = self.tblparc.item(i,2)
  if item.checkState() == QtCore.Qt.Checked:
    items.append(self.tblparc.itemAt(i,0))

Is it right ? How can I retrieve the contents ?
Thanks

[Axel_Erfurt]

Do you want the text?

items.append(self.tblparc.itemAt(i,0).text())

[Ninja2112]

Yes...I want the text. Tried here and don't understand why the reply repeats the first one that he find.

[Axel_Erfurt]

An Example

from PyQt5.QtWidgets import (QMainWindow, QApplication, QCheckBox, 
                              QTableWidget, QTableWidgetItem)

from PyQt5.QtCore import Qt


class mainWin(QMainWindow):
    def __init__(self, parent=None):
        super(mainWin, self).__init__(parent)
        self.setupUI()

    def setupUI(self):
        self.setGeometry(0, 0, 800, 600)
        self.setContentsMargins(10, 5, 10, 5)
        self.lb = QTableWidget(20, 2)
        self.setCentralWidget(self.lb)
        self.make_table()
        self.get_checked_items()

    def make_table(self):
        for row in range(self.lb.rowCount()):
            self.lb.setItem(row, 0, QTableWidgetItem(f"cell {row}"))
            self.lb.setCellWidget(row, 1, QCheckBox())
        ### check every 3rd for testing
        for row in range(0, 19, 3):
            self.lb.cellWidget(row, 1).setChecked(True)
            
            
    def get_checked_items(self):
        items = []
        for row in range(self.lb.rowCount()):
            if self.lb.cellWidget(row, 1).checkState() == Qt.Checked:
                items.append(self.lb.item(row, 0).text())
                
        print(f"checked items: {items}")


if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    win = mainWin()
    win.setWindowTitle("Example")
    win.show()

    sys.exit(app.exec_())

Output:
checked items: ['cell 0', 'cell 3', 'cell 6', 'cell 9', 'cell 12', 'cell 15', 'cell 18']

[Ninja2112]

You've got right to the point...my code was:

checkbox_item = QTableWidgetItem()
checkbox_item.setFlags(checkbox_item.flags() | Qt.ItemIsUserCheckable) 
checkbox_item.setCheckState(Qt.Unchecked)
 self.tblparc.setItem(row,2,checkbox_item)

And I was getting "AttributeError: 'NoneType' object has no attribute 'checkState'"

Danke schon...

[Axel_Erfurt]

Use QTableWidgetItem for text and QCheckBox as CellWidget

[Axel_Erfurt]

But it can also work with a checkable QTableWidgetItem

from PyQt5.QtWidgets import (QMainWindow, QApplication, QPushButton, 
                              QTableWidget, QTableWidgetItem, QMessageBox)
  
from PyQt5.QtCore import Qt
  
  
class mainWin(QMainWindow):
    def __init__(self, parent=None):
        super(mainWin, self).__init__(parent)
        self.setupUI()
  
    def setupUI(self):
        self.setGeometry(0, 0, 800, 600)
        self.setContentsMargins(10, 5, 10, 5)
        
        tbar = self.addToolBar("Toolbar")
        btn = QPushButton("check selected", clicked=self.get_checked_items)
        tbar.addWidget(btn)
        
        self.lb = QTableWidget(20, 2)
        self.setCentralWidget(self.lb)
        self.make_table()
  
    def make_table(self):
        for row in range(self.lb.rowCount()):
            self.lb.setItem(row, 0, QTableWidgetItem(f"cell {row}"))
            checkbox_item = QTableWidgetItem()
            checkbox_item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsUserCheckable) 
            checkbox_item.setCheckState(Qt.Unchecked)
            self.lb.setItem(row, 1, checkbox_item)
        ### check every 3rd for testing
        for row in range(0, 19, 3):
            self.lb.item(row, 1).setCheckState(Qt.Checked)
              
              
    def get_checked_items(self):
        items = []
        for row in range(self.lb.rowCount()):
            if self.lb.item(row, 1).checkState() == Qt.Checked:
                items.append(self.lb.item(row, 0).text())
                  
        message = f"checked items: {items}"
        print(message)
        msg = QMessageBox(1, "checked items", '\n'.join(items), QMessageBox.Ok)
        msg.exec()
  
  
if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    win = mainWin()
    win.setWindowTitle("Example")
    win.show()
  
    sys.exit(app.exec_())

[Ninja2112]

All right...thanks.