QTableView - CheckState

[MasterQ]

HI,

it's me, ... again ;-)

I am using the feature CheckState in my QTableView. I see differences again between C++ version and Python version.

While C++ is showing a hook as checkmark, Python is using a filled rectangle .

As I would prefere a hook (it is to distinguish easier between checked and unchecked state in dark mode), I am wondering if it is possible to select programmically what is used. Can the QCheckbox behind that feature accessed/modified by own code in some way? .. without writing my own painter !!

[JonB]

@MasterQ

from PySide6.QtCore import Qt
from PySide6 import QtWidgets, QtGui

class MainWindow(QtWidgets.QTableView):
    def __init__(self):
        super().__init__()
        self.model = QtGui.QStandardItemModel(5, 5)
        self.setModel(self.model)
        item = QtGui.QStandardItem()
        item.setCheckable(True)
        item.setCheckState(Qt.CheckState.Unchecked)
        self.model.setItem(0, 0, item)
        item = QtGui.QStandardItem()
        item.setCheckable(True)
        item.setCheckState(Qt.CheckState.PartiallyChecked)
        self.model.setItem(0, 1, item)
        item = QtGui.QStandardItem()
        item.setCheckable(True)
        item.setCheckState(Qt.CheckState.Checked)
        self.model.setItem(0, 2, item)


app = QtWidgets.QApplication([])

window = MainWindow()
window.resize(400, 100)
window.show()

app.exec()

Ubuntu 22.04, PySide6.7.2.

Python is using a filled rectangle

If I didn't know better I would say your Python code is setting the CheckState to PartiallyChecked where your C++ sets it to Checked.... That's why we always need a minimal example with your code. If you are using 1, True or an expression returning true for Qt.CheckState.Checked that is wrong, and would set Qt.CheckState.PartiallyChecked.

[JonB]

@MasterQ
When you say "Python" please state PySide or PyQt and version. "Python" does nothing, it's down to which library/bindings you use. And platform for a question like this.

Usually PySide/PyQt are really thin Python-bindings onto underlying Qt, so they don't do/change anything themselves. Checkmark might differ by style for app, are you using same style (e.g. Fusion)?

Otherwise I guess it's possible the checkmark is an image/icon in Qt libraries and PySide/PyQt isn't able to find it, for unknown reason, though I'm thinking this is not the case.

[MasterQ]

it is PySide6 (6.8.0.2).

I do not use own settings for Style so far. Both apps, C++ and PySide are running on the same machine under same conditions and taking such settings from the underlying KDE or using default ones.

It is fusion for both.

[JonB]

@MasterQ

from PySide6.QtCore import Qt
from PySide6 import QtWidgets, QtGui

class MainWindow(QtWidgets.QTableView):
    def __init__(self):
        super().__init__()
        self.model = QtGui.QStandardItemModel(5, 5)
        self.setModel(self.model)
        item = QtGui.QStandardItem()
        item.setCheckable(True)
        item.setCheckState(Qt.CheckState.Unchecked)
        self.model.setItem(0, 0, item)
        item = QtGui.QStandardItem()
        item.setCheckable(True)
        item.setCheckState(Qt.CheckState.PartiallyChecked)
        self.model.setItem(0, 1, item)
        item = QtGui.QStandardItem()
        item.setCheckable(True)
        item.setCheckState(Qt.CheckState.Checked)
        self.model.setItem(0, 2, item)


app = QtWidgets.QApplication([])

window = MainWindow()
window.resize(400, 100)
window.show()

app.exec()

Ubuntu 22.04, PySide6.7.2.

Python is using a filled rectangle

If I didn't know better I would say your Python code is setting the CheckState to PartiallyChecked where your C++ sets it to Checked.... That's why we always need a minimal example with your code. If you are using 1, True or an expression returning true for Qt.CheckState.Checked that is wrong, and would set Qt.CheckState.PartiallyChecked.

[MasterQ]

Yes, you are right. PartiallyChecked is the right key word here.

Now I see, what the difference was between my C++ version and the Python version.

@JonB said in QTableView - CheckState:

If you are using 1, True or an expression returning true for Qt.CheckState.Checked that is wrong, and would set Qt.CheckState.PartiallyChecked.

That was the point.

thnx