How to set StyleSheet for an specific label in QMessageBox?

[Muhammad Mirab Br.]

I Want to have a bigger QMessageBox and centered texts in it but when I increase the size of it by stylsheet it'll be like this:

if I could give it Some Padding or margin it would be fixed but I can't.

void MainWindow::showMsg()
{
    QMessageBox m_MsgBox;
    m_MsgBox.setWindowFlags(Qt::Window | Qt::FramelessWindowHint);
    m_MsgBox.setIcon(QMessageBox::Warning);
    m_MsgBox.setText("Your Trial is finished! Please purachase a plan.");
    m_MsgBox.setStandardButtons(QMessageBox::Ok);
    m_MsgBox.setStyleSheet("QLabel{min-width:200 px; font-size: 13px;} QPushButton{ width:25px; font-size: 13px; }");
    if(m_MsgBox.exec() == QMessageBox::Ok)
        m_MsgBox.close();
}

I want to give different css properties to each QLabel(QMessageBox::Warning & setText) in this QMessageBox.

Any help will be appreciated. Thanks!

[JonB]

@Muhammad-Mirab-Br said in How to set StyleSheet for an specific label in QMessageBox?:

min-width:200 px;

Probably not an issue, but if you are having a problem why do you put a space into 200px in case that is not acceptable to QSS? Why make it different from all your other XXpx directives?

[Muhammad Mirab Br.]

Sorry, I forgot to share the photo of it. I have problem with that the QMessageBox::Warning is having 200px width and It's not what I expected, I want to specify different QSS for these labels(QMessageBox::Warning, QLabel).

[Bonnie]

Only answering to your topic title, if you look into the source code of QMessageBox, every label has a object name, so that should be easy to set different style to them by using ID selector.

• text: "qt_msgbox_label"

• icon: "qt_msgboxex_icon_label"

• informativeText: "qt_msgbox_informativelabel"

Note: These names may change in future versions.

[Muhammad Mirab Br.]

@Bonnie Thanks! This really helped. This is what I was searching for.

[Muhammad Mirab Br.]

@Bonnie How can I Make the button center align in QMessagebox? I tried: move(), setGeometry() and etc.

At all, I want to make the button center. Thanks.

[Bonnie]

@Muhammad-Mirab-Br
Option 1: find QDialogButtonBox and set property

m_MsgBox.findChild<QDialogButtonBox*>(QString(), Qt::FindDirectChildrenOnly)->setCenterButtons(true);

Option 2: set property by stylesheet:

QDialogButtonBox { qproperty-centerButtons: true; }

[Muhammad Mirab Br.]

Thanks @Bonnie, You are AWESOME!