TFont class

In unit Graphics

Represents a font used to draw text in an application.

Declaration

pascal

TFont = class(TFPCustomFont)

Inheritance

TFont
TFPCustomFont

Descends from it: TControlFont

Description

TFont is a TFPCustomFont descendant, and provides properties and methods needed to represent a font used in an LCL application.

Most of the information about the font is provided in a TFontData instance used in protected methods like GetData and SetData. Data items in the structure are exposed as properties, and includes: CharSet, Color, Height,Name, Orientation, Pitch, Quality, Size, and Style.

The Reference property provides access to the font Handle in the widgetset implementation.

Properties

`FontData`	public	Contains the data describing the font.
`Handle`	public	Operating system Handle for the Font.
`IsMonoSpace`	public	Indicates if the font uses fixed-width characters (monospace).
`PixelsPerInch`	public	Display density for the font.
`Reference`	public	Reference - References made to this Font.
`CharSet`	published	Indicates the character set used in the font.
`Color`	published	Color used to render text using the font.
`Height`	published	Height for the font (in pixels).
`Name`	published	Name of the font.
`Orientation`	published	Rotation for the current font in 1/10ths of a degree.
`Pitch`	published	Pitch type of the Font.
`Quality`	published	Output quality for the Font, such as anti-aliasing.
`Size`	published	Vertical size for the font in Points.
`Style`	published	Styles applied to the font face.

Methods

`GetCharSet`	protected	Gets the value for the CharSet property.
`GetHeight`	protected	Gets the value for the Height property.
`GetPitch`	protected	Gets the value for the Pitch property.
`GetStyle`	protected	Gets the value for the Style property.
`Changed`	protected	Checks for pending updates (if there are any, returns True) or calls inherited Changed.
`DoAllocateResources`	protected	DoAllocateResources - calls inherited method then calls GetReference.
`DoCopyProps`	protected	DoCopyProps - calls inherited method; if From argument is another Font, copies specified properties directly.
`DoDeAllocateResources`	protected	DoDeAllocateResources - frees references then calls inherited method.
`SetCharSet`	protected	Sets the value for the CharSet property.
`SetColor`	protected	Sets the value for the Color property.
`GetColor`	protected	Gets the value for the Color property.
`SetFlags`	protected	Sets the value for an indexed style flag.
`SetFPColor`	protected	Sets the font Color to the specified TFPColor value.
`SetHeight`	protected	Sets the value for the Height property.
`SetName`	protected	Sets the value for the Name property.
`SetOrientation`	protected	Sets the value for the Orientation property.
`SetPitch`	protected	Sets the value for the Pitch property.
`SetSize`	protected	SetSize - if AValue is a new size, frees the old reference, calls the inherited method, performs the appropriate rounding and sets the Changed property.
`SetStyle`	protected	SetStyle - specify which style to use.
`SetQuality`	protected	SetQuality - specify the quality.
`Create`	public	Constructor for the class instance.
`Destroy`	public	Destructor for the class instance.
`Assign`	public	Copies values from Source to the current class instance.
`BeginUpdate`	public	Starts an update process for the class instance.
`EndUpdate`	public	Finishes an update process for the class instance.
`HandleAllocated`	public	HandleAllocated - returns True if a handle has been allocated.
`IsDefault`	public	IsDefault - returns True if this is the default Font.
`IsEqual`	public	IsEqual - returns True if this Font is the same as the specified Font.
`IsHorizontal`	public	Determines whether the font runs in horizontal direction, either normal or upside down.
`IsVertical`	public	Indicates whether the font is rotated by +/-90 degrees
`SetDefault`	public	Sets font properties to their default values.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.