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

TDBGroupBox

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

TDBGroupBox - 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 919

type TDBGroupBox = class(TCustomGroupBox)

  FDataLink: TFieldDataLink;

  

FDataLink - local variable storing the identity of the Field Data Link

  function GetDataField;

  

GetDataField - returns the name of the data field

  function GetDataSource;

  

GetDataSource - returns the identity of the data source

  function GetField;

  

GetField - returns the identity of the field to which the group box is atttached

  procedure SetDataField();

  

SetDataField - specifies the data field to which the group box is attached

  procedure SetDataSource();

  

SetDataSource - specifies the data source to be used by the group box

  procedure CMGetDataLink(); message;

  

CMGetDataLink - control message for finding the data link

protected

  procedure DataChange(); virtual;

  

DataChange - if Data changed, loads the new data into the caption

  procedure Loaded; override;

  procedure Notification(); override;

public

  constructor Create(); override;

  

Create - constructor for TDBGroupBox: calls inherited Create then sets up datalinks and actions

  destructor Destroy; override;

  

Destroy - destructor for TDBGroupBox: frees datalinks then calls inherited Destroy

  property Field: TField; [r]

  

The field in the DataSet to which this control is to be linked. Can be referred to by name, or as an index

published

  property Align;

  

Used to align the control to the top, bottom, left or right of its client.

  property Anchors;

  

The set of anchor definitions for this control

  property BorderSpacing;

  

Determines the border spacing for this control

  property Caption;

  

Caption - the text-string appearing on the Control, usually used to identify its function

  property ClientHeight;

  

ClientHeight - determines the height of the client within which the control exists

  property ClientWidth;

  

ClientWidth - determines the width of the client within which the control exists

  property Color;

  

Determine the colour for the current control

  property Constraints;

  

Determine Constraints (max and min height and width) for this control

  property DataField: String; [rw]

  

The name of the field, as a string (ie cannot be referred to as an Index)

  property DataSource: TDataSource; [rw]

  

The DataSource from which information is obtained to display in this control. Usually the result of a SQLQuery

  property DragCursor;

  

DragCursor - the style of cursor to be used during the Drag process

  property DragMode;

  

DragMode - whether manual or automatic

  property Enabled;

  

Whether the control is Enabled (read/write). If not, it usually appears 'greyed-out'

  property Font;

  

The font to be used for text in this control (read/write).

  property OnClick;

  

Event Handler for mouse click

  property OnDblClick;

  

Event Handle for mouse double-click

  property OnDragDrop;

  

Event handler for the drop of a control onto this control.

  property OnDragOver;

  

Event handler for the case when a control is dragged over another control

  property OnEndDrag;

  

Event handler for the end of a dragging process

  property OnEnter;

  

OnEnter - event handler for when the mouse enters the control, and the control receives focus

  property OnExit;

  

OnExit - event handler for when the mouse leaves the control and it loses focus

  property OnKeyDown;

  

OnKeyDown - event handler for instance when key is down while control has focus

  property OnKeyPress;

  

OnKeyPress - event controller for a key being pressed while the control has focus. To properly handle national chars use UTF8KeyPress instead.

  property OnKeyUp;

  

OnKeyUp - event handler for instance when a key is up (not pressed) while the control has focus

  property OnMouseDown;

  

Event handler for when a mouse button is pressed down

  property OnMouseMove;

  

Event handler for mouse movement within the current control

  property OnMouseUp;

  

Event handler for when the mouse button is released, ie "up"

  property OnResize;

  

Event Handler for resize of control

  property OnStartDrag;

  

Event handler for start of dragging operation

  property OnUTF8KeyPress;

  

UTF8KeyPress - event controller for a key being pressed while the control has focus.

  property ParentColor;

  

ParentColor - should the control have the same colour as the parent? Default is true

  property ParentFont;

  

ParentFont - should the control use the same font as the parent? Default is true

  property ParentShowHint;

  

ParentShowHint - does the control adopt the same hinting behaviour as its parent? Default is true

  property PopupMenu;

  

PopupMenu - a context-sensitive menu that pops up when the right mouse button is clicked over this control

  property ShowHint;

  

Flag to determine: Is hint to be displayed for this control?

  property TabOrder;

  

The place this control occupies in the list of tabs

  property TabStop;

  

Is the control in the sequence of controls accessed by successive presses of the Tab key?

  property Visible;

  

Visible - can the control be seen?

end;

Inheritance

TDBGroupBox

  

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

|

TCustomGroupBox

  

TCustomGroupBox - the base class for TGroupBox, TRadioGroup and TCheckGroup

|

TWinControl

|

TControl

|

TLCLComponent

  

TLCLComponent - base class for LCL components

|

TComponent,IUnknown,IInterfaceComponentReference

|

TPersistent

|

TObject

See also

HowToUseDataAwareControls

  

HowToUseDataAwareControls - Hints for accessing databases

The latest version of this document can be found at lazarus-ccr.sourceforge.net.