QFont

QFont is a class in the Qt framework used to represent font properties. It encapsulates information such as the font family, style, point size, weight, and other attributes. Developers use QFont objects to specify the appearance of text rendered in Qt applications.

The font family specifies the typeface, such as "Arial," "Times New Roman," or "Courier New." The style can be regular, italic, or oblique. Font weight indicates how bold the text appears, with common values like normal or bold. QFont also allows for setting various other properties, including capitalization, underline, overline, and strikethrough.

QFont objects are typically created and then set on widgets or drawing contexts to influence their text rendering. For instance, a QLabel or QPushButton can have its font property assigned a QFont instance. When the application draws text, it will use the properties defined by the associated QFont.

Qt provides mechanisms for retrieving available system fonts and for creating fonts from font files. This flexibility allows for consistent text display across different platforms while also enabling custom font usage. QFont plays a crucial role in the visual presentation and user experience of Qt-based software.