Constants of type ThemeFontID identify the kinds of system fonts. Your application may pass a ThemeFontID constant to the function UseThemeFont to apply a font of the specified kind to the current port, or it may pass a ThemeFontID constant to the function GetThemeFont to retrieve information about the specified kind of font. The ThemeFontID constants are available with Appearance Manager 1.1 and later.
enum {
kThemeSystemFont = 0,
kThemeSmallSystemFont = 1,
kThemeSmallEmphasizedSystemFont = 2,
kThemeViewsFont = 3
};
typedef UInt16 ThemeFontID;