TLabel

TLabel is a standard user interface component used to display static, non-editable text in graphical applications. It is part of the Visual Component Library (VCL) in Delphi and the Lazarus Component Library (LCL) in Free Pascal. TLabel inherits from a generic label class and provides text rendering, font styling, and color customization for displaying captions on forms or dialogs. It is commonly employed to describe or identify other controls such as input fields, check boxes, or buttons.

The primary role of TLabel is to present the Caption text. It can be associated with another control so that interacting with the label affects that control, for example by transferring focus when the label is clicked. This improves accessibility and makes forms easier to navigate. Labels can also include keyboard mnemonics via ampersand markers in the caption, enabling quick access to the related control.

Appearance and layout are managed through properties that control sizing and alignment. AutoSize determines whether the label resizes to fit its caption, and Alignment defines how the text is aligned within the label’s bounds. Labels can be drawn transparently or with a background consistent with their parent container, and they inherit font and color properties from their container, allowing consistent styling with other controls.

TLabel supports user interaction through events such as OnClick and various mouse-related events, enabling clickable labels or dynamic behavior in response to user input. It remains a lightweight, read-only text element suitable for labeling and descriptive hints within forms and dialogs. See also: TCustomLabel.