<![CDATA[Using QFont]]>Hello!

I'm trying to change the ui's labels' fonts with code. I have a variable which saves the new font size, for example:

int labelSize = 12;
ui->label->font().setPointSize(labelSize);

But I have the following error:

'void QFont::setPointSize(int)' : cannot convert 'this' pointer from 'const QFont' to 'QFont &'

and I don't know how to fix it.

Thank you very much!!

]]>https://forum.qt.io/topic/79879/using-qfontRSS for NodeThu, 18 Jun 2026 07:23:37 GMTFri, 02 Jun 2017 09:55:52 GMT60<![CDATA[Reply to Using QFont on Fri, 02 Jun 2017 11:44:05 GMT]]>Hi,

Technically it should rather be:

QFont font = m_label->font();
font.setPointSize(50);
m_label->setFont(font);

So you are always sure to modify the font from a given widget which might have bee changed elsewhere.

]]>https://forum.qt.io/post/396993https://forum.qt.io/post/396993Fri, 02 Jun 2017 11:44:05 GMT<![CDATA[Reply to Using QFont on Fri, 02 Jun 2017 10:18:52 GMT]]>HI @ivanicy

Welcome,

Thanks,

]]>https://forum.qt.io/post/396985https://forum.qt.io/post/396985Fri, 02 Jun 2017 10:18:52 GMT<![CDATA[Reply to Using QFont on Fri, 02 Jun 2017 10:13:43 GMT]]>Thank you very much!!

]]>https://forum.qt.io/post/396984https://forum.qt.io/post/396984Fri, 02 Jun 2017 10:13:43 GMT<![CDATA[Reply to Using QFont on Fri, 02 Jun 2017 10:07:23 GMT]]>Hi,

@ivanicy

can u try

int fontsize = 50;

QFont font;
font.setPointSize(fontsize);

m_label = new QLabel;
m_label->setText("Hello");
m_label->setFont(font);

Thanks,

]]>https://forum.qt.io/post/396983https://forum.qt.io/post/396983Fri, 02 Jun 2017 10:07:23 GMT