How to Set Font to all Application

[TheCipo76]

Hi,
in my application i have to allow user to choose Font

in mainwindows i call fontdialog()

now how i can set selected font to all form (and all contents of all form)?

i've tried with:

QFont V ("Verdana", 14);
QApplication::setFont(V);

but don't works (menubar was not changed correctly for example)

i've also tried with:

 ui->menuBar->setStyleSheet("QMenuBar { font-family:Verdana; font-size:12px;}" "QMenuBar::item { font-family:Verdana; font-size:12px;}" "QMenuBar::item:selected { font-family:Verdana; font-size:12px;}");

but don't works too (don't works for Action)

this solution works but i don't want to change font one by one (moreover don't works for Action):

bool ok;
 QFont Carattere = QFontDialog::getFont(&ok, this);
 if (ok) {
     V = Carattere;
     ui->menuBar->setFont(V);
     ui->menuFile->setFont(V);
     ui->menuOrdini->setFont(V);
     ui->menuModifica->setFont(V);
     ui->menuRegistra->setFont(V);
     ui->menuFornitore->setFont(V);
     ui->menuInserisci->setFont(V);
     ui->menuMagazzino->setFont(V);
     ui->menuAnagrafica->setFont(V);
     ui->menuProduzione->setFont(V);
     ui->menuda_Clienti->setFont(V);
     ui->menuCambia->setFont(V);
}
else {
    return;
}

any ideas?

[dheerendra]

Did you try with QApplication setFont method ?

[TheCipo76]

@dheerendra Yes, it's the first code i've posted up

[raven-worx]

@TheCipo76
generally fonts propagate down to descendant child widgets (see this)

Are you setting fonts via stylesheet in your application?

[nina22]

This post is deleted!

[TheCipo76]

@raven-worx No i don't have used stylesheet

i need to allow font selection because my application works both on os x than windows..

i have already read this article today ;)

[TheCipo76]

with a fontdialog i can set the QApplication::font

at the moment i have to set the QApplication::font to every widget one by one eg:

ui->label->setFont(QApplication::Font());

and when i open a dialog i have to do the same operation to all form widget..

i'm looking to something faster / easier

[raven-worx]

@TheCipo76
since you read the article, you are aware that setting the font explicitly (manually or via stylesheet) prevents font propagation (Qt::WA_SetFont attribute)?!

[TheCipo76]

@raven-worx yes.. i'm fix it with this:

void MainWindow::updateAllWidgets()
{
    foreach (QWidget *widget, QApplication::allWidgets()) {
        widget->setFont(QApplication::font());
        widget->update();
    }
}

But don't works on Menu Action