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

TPanel

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

The main class for a general container which can hold other objects. It has a customizable border and a central text.

Declaration

Source position: extctrls.pp line 1069

type TPanel = class(TCustomPanel) end;

published

  property Align: TAlign;

  

Specifies the placement of the control inside its Parent.

  property Alignment: TAlignment;

  

Alignment - whether text is left or right justified, or centered

  property Anchors: TAnchors;

  

The set of anchor definitions for this control.

  property AutoSize: Boolean;

  

Allows to automatically adjust the size of the control, according to its content.

  property BorderSpacing: TControlBorderSpacing;

  

Determines the inner and outer border spacing for this control.

  property BevelColor: TColor;

  property BevelInner: TPanelBevel;

  

BevelInner - determines the nature of the Inner Bevel of the panel (whether raised, lowered etc)

  property BevelOuter: TPanelBevel;

  

BevelOuter - determines the nature of the Outer Bevel of the panel (whether raised, lowered etc)

  property BevelWidth: TBevelWidth;

  

BevelWidth - the Width of the panel's bevel in pixels

  property BidiMode: TBiDiMode;

  property BorderWidth: TBorderWidth;

  

Width of the Border around the control; default is zero.

  property BorderStyle: TBorderStyle;

  

Allows to show a border (line) around the control,

  property Caption: TCaption;

  

  property ChildSizing: TControlChildSizing;

  

  property ClientHeight: Integer;

  

The height of the client area of the control.

  property ClientWidth: Integer;

  

The width of the client area of the control.

  property Color: TColor;

  

The background color of the control.

  property Constraints: TSizeConstraints;

  

The minimal and maximal Width and Height of this control.

  property DockSite: Boolean;

  

Allows to drag-dock other controls into this control.

  property DragCursor: TCursor;

  

The cursor shape shown while the control is dragged.

  property DragKind: TDragKind;

  

The operation when the control is dragged - Drag or Dock.

  property DragMode: TDragMode;

  

Allows the user to drag the control.

  property Enabled: Boolean;

  

Determines whether the control reacts on mouse or keyboard input.

  property Font: TFont;

  

The font to be used for text display in this control.

  property FullRepaint: Boolean;

  

FullRepaint - if True, the panel needs to be fully repainted after each change

  property ParentBidiMode: Boolean;

  property ParentColor: Boolean;

  

If true, the Color of the control will be the same as the one from the Parent. Default is true.

  property ParentFont: Boolean;

  

If true, the Font of the control will be the same as the one from the Parent. Default is true.

  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 the Hint display.

  property TabOrder: TTabOrder;

  

Determines the sequence of controls, reachable when the user presses the Tab key.

  property TabStop: Boolean;

  

Allows the user to navigate to this control, by pressing the Tab key.

  property UseDockManager: Boolean;

  

Determines whether a DockManager is used for this DockSite.

  property Visible: Boolean;

  

Allows to show or hide the control, and all of its children.

  property Wordwrap: Boolean;

  property OnClick: TNotifyEvent;

  

Notification handler for mouse clicks.

  property OnContextPopup: TContextPopupEvent;

  property OnDockDrop: TDockDropEvent;

  

Notification handler for the drop of a control to be docked.

  property OnDockOver: TDockOverEvent;

  

Event handler for moves of a control over this docksite. Determines acceptance or rejection of an possible drop.

  property OnDblClick: TNotifyEvent;

  

Event Handler for double mouse clicks.

  property OnDragDrop: TDragDropEvent;

  

This handler determines the action on an drop onto this control, in a drag-drop operation.

  property OnDragOver: TDragOverEvent;

  

Event handler for a control being dragged over this control.

  property OnEndDock: TEndDragEvent;

  

Notification handler for the end of a docking operation.

  property OnEndDrag: TEndDragEvent;

  

Notification handler for the end of a dragging operation.

  property OnEnter: TNotifyEvent;

  

Handler for control receiving the focus.

  property OnExit: TNotifyEvent;

  

Handler for control loosing the focus. This is a good place for checking the finished user input.

  property OnGetSiteInfo: TGetSiteInfoEvent;

  

Provides information about the DockSite.

  property OnGetDockCaption: TGetDockCaptionEvent;

  

This handler can provide a special DockCaption, different from the Caption default.

  property OnMouseDown: TMouseEvent;

  

Event handler for mouse button going down.

  property OnMouseEnter: TNotifyEvent;

  property OnMouseLeave: TNotifyEvent;

  property OnMouseMove: TMouseMoveEvent;

  

Event handler for mouse movement within the control.

  property OnMouseUp: TMouseEvent;

  

Event handler for mouse button going up.

  property OnMouseWheel: TMouseWheelEvent;

  property OnMouseWheelDown: TMouseWheelUpDownEvent;

  property OnMouseWheelUp: TMouseWheelUpDownEvent;

  property OnPaint: TNotifyEvent;

  property OnResize: TNotifyEvent;

  

Notification handler for a resize of the control.

  property OnStartDock: TStartDockEvent;

  

Event handler for the start of a docking operation.

  property OnStartDrag: TStartDragEvent;

  

Event handler for the start of a dragging operation.

  property OnUnDock: TUnDockEvent;

  

Event handler for control being undocked from this DockSite.

Inheritance

TPanel

  

The main class for a general container which can hold other objects. It has a customizable border and a central text.

|

TCustomPanel

  

The base class for a general container which can hold other objects. It has a customizable border and a central text.

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TCustomControl

  

The base class for windowed controls which paint themselves.

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TWinControl

  

The base class for controls which can contain other (child) controls.

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TControl

  

The base class for visible controls.

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TLCLComponent

  

The base class for LCL components associated with widgets.

|

TComponent

?

TObject

Description

A Panel is a defined rectangular area of the form into which other components can be placed to group them functionally and geographically.

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