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

# TDBGroupBox

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

TDBGroupBox is a data-aware version of TGroupBox, allowing a number of data-aware objects to be grouped together on a form.

## Declaration

Source position: dbctrls.pp line 1094

`type TDBGroupBox = class(TCustomGroupBox)`
`protected`
`procedure DataChange();` |  | Updates the value for the control when the linked dataset is changed.
`procedure Notification(); override;` |  | Handles a notification when a component is added to or removed from the control.
`public`
`constructor Create(); override;` |  | Constructor for the class instance.
`destructor Destroy; override;` |  | Destructor for the class instance.
`function ExecuteAction(); override;` |  | Provides support for TBasicAction in the control.
`function UpdateAction(); override;` |  | Updates the specified action to reflect the current state in the linked dataset.
`property Field: TField; [r]` |  | The Field to which the datalink is attached.
`published`
`property Align: TAlign;` |  | Specifies the placement of the control on its Parent control.
`property Anchors: TAnchors;` |  | The set of anchor definitions for this control.
`property BiDiMode: TBiDiMode;` |  | Indicates whether text controls use in bi-directional reading.
`property BorderSpacing: TControlBorderSpacing;` |  | Determines the inner and outer border spacing for this control.
`property Caption: TCaption;` |  | Text displayed as the caption for the control.
`property ClientHeight: Integer;` |  | The height for the client area on the control.
`property ClientWidth: Integer;` |  | The width of the client area for the control.
`property Color: TColor;` |  | The background color for the control.
`property Constraints: TSizeConstraints;` |  | Contains the minimum and maximum Width and Height for the control.
`property Cursor: TCursor;` |  | Contains the shape for the mouse pointer when the mouse is over the control.
`property DataField: string; [rw]` |  | Contains the name of the field with the value for the control.
`property DataSource: TDataSource; [rw]` |  | Provides access to the dataset with content for the control.
`property DoubleBuffered: Boolean;` |  | When enabled, it reduces flicker when the control is painted.
`property DragCursor: TCursor;` |  | The cursor shape shown during a drag operation.
`property DragKind: TDragKind;` |  | Indicates the action performed for a drag operation: drag-and-drop or drag-and-dock.
`property DragMode: TDragMode;` |  | Determines how a drag operation is started for the control.
`property Enabled: Boolean;` |  | Determines whether the control responds to mouse or keyboard input.
`property Font: TFont;` |  | The font to be used for text display in this control.
`property ParentBiDiMode: Boolean;` |  | Indicates whether the BiDiMode settings in the Parent control are used.
`property ParentColor: Boolean;` |  | Use the Color from the Parent control, when enabled.
`property ParentDoubleBuffered: Boolean;` |  | Value for the DoubleBuffered property in a Parent control.
`property ParentFont: Boolean;` |  | Indicates if the Font from the Parent control is used in the control.
`property ParentShowHint: Boolean;` |  | If True, the value of ShowHint for the control will be the same as the one from the Parent. Default is True.
`property PopupMenu: TPopupMenu;` |  | A context-sensitive menu that pops up when the right mouse button is clicked over this control.
`property ShowHint: Boolean;` |  | Enables Hint display for the control.
`property TabOrder: TTabOrder;` |  | Indicates the navigation order for the control when the user presses the Tab or Shift+Tab key.
`property TabStop: Boolean;` |  | Allows the user to navigate to / from the control by pressing the Tab or Shift+Tab keys.
`property Visible: Boolean;` |  | Indicates if the control is visible on its parent.
`property OnClick: TNotifyEvent;` |  | Notification handler for mouse clicks.
`property OnContextPopup: TContextPopupEvent;` |  | Invoked when a context-sensitive pop-up menu is requested.
`property OnDblClick: TNotifyEvent;` |  | Event handler signalled when a mouse double click occurs in the control.
`property OnDragDrop: TDragDropEvent;` |  | Event handler signalled when an object is dropped onto the control.
`property OnDragOver: TDragOverEvent;` |  | Event handler signalled when a control is dragged over the control instance.
`property OnEndDrag: TEndDragEvent;` |  | Event handler signalled for the end of a drag-drop operation.
`property OnEnter: TNotifyEvent;` |  | Event handler signalled when the control receives focus.
`property OnExit: TNotifyEvent;` |  | Event handler signalled when the control loses focus.
`property OnKeyDown: TKeyEvent;` |  | Event handler signalled when a key is down while the control has focus.
`property OnKeyPress: TKeyPressEvent;` |  | Event handler signalled when a key is being pressed while the control has focus.
`property OnKeyUp: TKeyEvent;` |  | Event handler signalled when a key is up (not pressed) while the control has focus.
`property OnMouseDown: TMouseEvent;` |  | Event handler signalled when a mouse down event is handled for the control.
`property OnMouseEnter: TNotifyEvent;` |  | Event handler signalled when the mouse pointer has entered the control.
`property OnMouseLeave: TNotifyEvent;` |  | Event handler signalled when the mouse pointer has left the control.
`property OnMouseMove: TMouseMoveEvent;` |  | Event handler signalled when the mouse pointer is moved in the control.
`property OnMouseUp: TMouseEvent;` |  | Event handler signalled when a mouse up event is handled for the control.
`property OnMouseWheel: TMouseWheelEvent;` |  | Event handler for mouse wheel turned.
`property OnMouseWheelDown: TMouseWheelUpDownEvent;` |  | Event handler signalled for a downward movement of the mouse wheel.
`property OnMouseWheelUp: TMouseWheelUpDownEvent;` |  | Event handler signalled for an upward movement of the mouse wheel.
`property OnResize: TNotifyEvent;` |  | Notification handler for a resize of the control.
`property OnStartDrag: TStartDragEvent;` |  | Event handler signalled for the start of a dragging operation.
`property OnUTF8KeyPress: TUTF8KeyPressEvent;` |  | Handler for a character entered by the user.
`end;`

## Inheritance

`TDBGroupBox` |  | TDBGroupBox is a data-aware version of TGroupBox, allowing a number of data-aware objects to be grouped together on a form.
`TCustomGroupBox` |  | The base class for TGroupBox, TRadioGroup and TCheckGroup.
`TWinControl` |  | Implements a windowed control which can contain other child controls.
`TControl` |  | The base class for visible controls.
`TLCLComponent` |  | The base class for LCL components which have an associated widget.
`TComponent`
?
`TObject`

## Description

TDBGroupBox is a TCustomGroupBox descendant which implements a data-aware container for visual controls. A typical use case would involve using a database table where records contain one field which defines the group box caption, while other fields provide the values for additional data-aware controls.

Like other data-aware controls, TDBGroupBox contains both a DataSource and a DataField property which provides access to the linked dataset and the field with the caption for the control.

## See also

TCustomGroupBox |  | The base class for TGroupBox, TRadioGroup and TCheckGroup.
How To Use Data-aware Controls |  | HowToUseDataAwareControls - Hints for accessing databases.