How to specify monospace fonts for cross platform Qt applications?

Question

Is there a platform independent way to specify a fixed width font for a Qt widget ?

If I set the font to "Monospace" in Designer on Linux, it is not found on Windows and Arial is used instead.

Answer 1

You can use the style hint property of QFont:

QFont font("Monospace");
font.setStyleHint(QFont::TypeWriter);

If the font cannot be found (which happens with Monospace on Windows), Qt's font matching algorithm tries to find a font that matches the given style hint.

Answer 2

You can retrieve the system's default fixed font using QFontDatabase's systemFont(..) function. It was introduced in Qt 5.2.

Example:

const QFont fixedFont = QFontDatabase::systemFont(QFontDatabase::FixedFont)

Answer 3

For all widgets that accept Rich Text you can simply put it into a pre block, ie <pre>This is my Text</pre> . It will then use the systems monospace font.

Answer 4

我在Linux和Windows上使用Qt中的Courier。