CODEWITHSUNDEEP
qtqtablewidgetqcheckbox
Ufx
Ufx

Reputation: 2695

Set widget background color

I use QCheckBox in QTableWidgetCell

QWidget *widget = new QWidget();
QCheckBox *checkBox = new QCheckBox();
QHBoxLayout *layout = new QHBoxLayout(widget);
layout->addWidget(checkBox);
layout->setAlignment(Qt::AlignCenter);
layout->setContentsMargins(0, 0, 0, 0);
widget->setLayout(layout);
table->setCellWidget(0, 0, widget);

How can I change cell background?

Upvotes: 9

Views: 41131

Answers (3)

Jacob Krieg
Jacob Krieg

Reputation: 3164

The code:

widget->setStyleSheet("background-color: red");

works fine but you need to set the style for every container widget you add to your table:

So in order to see the change you need the following code:

QWidget *widget = new QWidget();
widget->setStyleSheet("background-color: red");
QCheckBox *checkBox = new QCheckBox();
QHBoxLayout *layout = new QHBoxLayout(widget);
layout->addWidget(checkBox);
layout->setAlignment(Qt::AlignCenter);
layout->setContentsMargins(0, 0, 0, 0);
widget->setLayout(layout);

QWidget *widget2 = new QWidget();
widget2->setStyleSheet("background-color: red");
QCheckBox *checkBox2 = new QCheckBox();
QHBoxLayout *layout2 = new QHBoxLayout(widget2);
layout2->addWidget(checkBox2);
layout2->setAlignment(Qt::AlignCenter);
layout2->setContentsMargins(0, 0, 0, 0);
widget2->setLayout(layout);

ui->tableWidget->setCellWidget(0, 0, widget);
ui->tableWidget->setCellWidget(0, 1, widget2);

And the result will be:

enter image description here

Upvotes: 9

Jablonski
Jablonski

Reputation: 18504

If you want to change cell background, not a widget, use setBackground() method:

QCheckBox *checkBox = new QCheckBox("example");
QWidget *widget = new QWidget();
QHBoxLayout *layout = new QHBoxLayout(widget);
layout->addWidget(checkBox);
layout->setAlignment(Qt::AlignCenter);
layout->setContentsMargins(0, 0, 0, 0);
widget->setLayout(layout);
ui->tableWidget_2->setCellWidget(0,0,widget);
ui->tableWidget_2->item(0, 0)->setBackground(Qt::red);//this line should be

In this case all your cell will be red (without white lines around checkbox).

Upvotes: 1

msrd0
msrd0

Reputation: 8361

You should try this:

checkBox->setStyleSheet("background-color: red;");

If you want to specify it more generally, write the classtype in the CSS to indicate which class in the hierarchy should handle the flag. This could look something like this then:

QWidget { background-color: red; }

Upvotes: 1

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