This property returns and sets the Bold font style.
object.FontBold [= Boolean]
Use these font properties to format text, either at design time using the Properties window or at run time using code. For Form object, setting these properties does not affect graphics or text already drawn on the control or object. For all other controls, font changes take effect on screen immediately.
To use these properties with the CommonDialog control, the Effects flag must be set.
Fonts available in the toolkit vary depending on your system configuration and display devices. Font-related properties can be set only to values for which actual fonts exist.