How to change the background color of the QTableWidget's vertical header?

Question

I would like to change the colors of a QTableWidget. I am almost getting the result I like, but two areas in the vertical header remain white:

Before writing this post I actually managed to color also the upper left corner, but not the other area. Here is the stylesheet I am using:

QTableCornerButton::section {
    background-color: #8b8d8e;
}

QHeaderView::section {
    color: white;
    background-color: #747678;
    gridline-color: #747678;
}

score 3 · Accepted Answer · answered Nov 06 '20 at 07:39

Finally found the answer myself:

/*The top-left area is actually a button:*/
QTableCornerButton::section {
    background-color: #8b8d8e;
}

/*The lower part of the vertical header:*/
QHeaderView {
    background-color: #8b8d8e;
}

The original css I posted (QHeaderView::section) referred only to the header entries, not the header itself.

score 0 · Answer 2 · answered Aug 11 '23 at 11:51

QTableCornerButton is a private class of QTableWidget, you can enable and disable the button using the function QTableView::setCornerButtonEnabled, however, if you disable the button, that corner abstract button has a white background.

It is different from QAbstractScrollArea::cornerWidget, you can set another widget with setCornerWidget, but it won't override.

Even if the class is private, it can be acessed with the following code:

QAbstractButton* qCorner = this->findChild<QAbstractButton *>();

Where this is a wrapper class for QTableWidget or use yourTableObj instead of this.

And then you can style:

qCorner->setStyleSheet("QTableCornerButton::section {"
                       "border: 0px;"
                       "background-color: " + QColor(Qt::black).name() +
                       ";}");

It is useful when you don't want to use stylesheet on the entire Table, be cause either you are using some Item delegates or using QPalette.

How to change the background color of the QTableWidget's vertical header?

2 Answers2