[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'Controls' (#lcl)

# TCustomControl

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

TCustomControl - a base class for many window controls

## Declaration

Source position: controls.pp line 1923

`type TCustomControl = class(TWinControl)`
`protected`
`procedure WSRegisterClass; override;` |  | WSRegisterClass - Register this Class for the current Widget Set
`procedure WMPaint(); message;` |  | WMPaint - LCL message for painting
`procedure DestroyWnd; override;` |  | DestroyWnd - destroy the window for this control
`procedure PaintWindow(); override;` |  | PaintWindow - method for painting a window
`procedure FontChanged(); override;` |  | FontChanged - method for dealing with a changed font
`procedure SetColor(); override;` |  | Set up the colour to be used by the control
`procedure Paint; virtual;` |  | The default paint handler for the class
`public`
`constructor Create(); override;` |  | Create - constructor for TCustomControl: performs inherited Create, then creates local Canvas and sets DoubleBuffered to be False
`destructor Destroy; override;` |  | Destroy - destructor for TCustomControl: frees local Canvas then performs inherited Destroy
`property Canvas: TCanvas; [rw]` |  | The area of a control on which its components are drawn or painted
`property BorderStyle;` |  | BorderStyle - none, or single
`property OnPaint: TNotifyEvent; [rw]` |  | Event handler for painting
`end;`

## Inheritance

`TCustomControl` |  | TCustomControl - a base class for many window controls
`TWinControl` |  | TWinControl - the base class for all windowed controls
`TControl` |  | TControl - the main ancestor class for visual controls.
`TLCLComponent`
?
`TObject`

## Description

Contains simple basic definitions to create, destroy and paint window controls and set basic properties like canvas and border

## See also

TWinControl |  | TWinControl - the base class for all windowed controls
TControl |  | TControl - the main ancestor class for visual controls.

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