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

TBitBtn

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

A Button with a small image attached

Declaration

Source position: buttons.pp line 192

type TBitBtn = class(TCustomBitBtn)

published

  property Action;

  

The action to be associated with this control

  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 AutoSize;

  

Whether auto-size is to be used

  property BidiMode;

  property BorderSpacing;

  

Determines the border spacing for this control

  property Cancel;

  

Is this the Cancel button? (default setting is False)

  property Caption;

  

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

  property Color;

  

Determine the colour for the current control

  property Constraints;

  

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

  property Default;

  

Is this the Default button? (default setting is False)

  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 Glyph;

  

The BitMap Glyph to be displayed on the button

  property GlyphShowMode;

  property Kind;

  

What kind of BitButton? Custom, OK, Cancel, Yes, No etc

  property Layout;

  

Layout of button - Glyph at top, bottom, left or right

  property Margin;

  

The margin to be left around glyphs

  property ModalResult;

  

Determines whether the button closes its modal parent form.

  property NumGlyphs;

  

The number of glyphs for display

  property OnChangeBounds;

  

Event handler for a change in bounds of the control

  property OnClick;

  

Event Handler for mouse click

  property OnContextPopup;

  property OnDragDrop;

  property OnDragOver;

  property OnEndDrag;

  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 OnMouseEnter;

  property OnMouseLeave;

  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;

  property OnUTF8KeyPress;

  

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

  property ParentBidiMode;

  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 Spacing;

  

The spacing around the BitButton

  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

TBitBtn

  

A Button with a small image attached

|

TCustomBitBtn

  

TCustomBitBtn - the ancestor class for TBitBtn.

|

TCustomButton

  

TCustomButton - the base class for TButton and TBitBtn

|

TButtonControl

  

TButtonControl : ancestor class for several Button (including Radio Button) and Check Box classes

|

TWinControl

|

TControl

|

TLCLComponent

  

TLCLComponent - base class for LCL components

|

TComponent,IUnknown,IInterfaceComponentReference

|

TPersistent

|

TObject

Description

Bit Button: a push button control on a toolbar causing a particular action to be executed. It often displays a glyph or small graphic to denote its function.

See also

HowToUseStdCtrls

  

How to use StdCtrls, ComCtrls or ExtCtrls

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