TCustomUpDown

type TCustomUpDown = class(TCustomControl)

protected

  class procedure WSRegisterClass; override;

Registers this component class with the current WidgetSet.

  procedure AdjustPos();

Applies changes to the control value using its increment and decrement buttons.

  procedure InitializeWnd; override;

Initializes the window handle for the control.

  procedure AssociateKeyDown();

Implements the OnKeyDown event handler assigned to the Associate control in the class instance.

  procedure AssociateMouseWheel();

Implements an OnMouseWheel event handler assigned to the Associate control in the class instance.

  procedure OnAssociateChangeBounds();

Implements an OnChangeBounds event handler assigned to the Associate control in the class instance.

  procedure OnAssociateChangeEnabled();

Implements an OnEnabledChanged event handler assigned to the Associate control in the class instance.

  procedure OnAssociateChangeVisible();

Implements an OnVisibleChanged event handler assigned to the Associate control in the class instance.

  function DoMouseWheelDown(); override;

Performs actions when a mouse wheel down event occurs for the control.

  function DoMouseWheelUp(); override;

Performs actions when a mouse wheel up event occurs for the control.

  function DoMouseWheelLeft(); override;

Performs actions when a mouse wheel left event occurs for the control.

  function DoMouseWheelRight(); override;

Performs actions when a mouse wheel right event occurs for the control.

  procedure MouseEnter; override;

Performs actions when the mouse pointer enters the control.

  procedure MouseLeave; override;

Performs actions when the mouse pointer leaves the control.

  procedure DoSetBounds(); override;

Applies the specified bounds to the control.

  procedure SetEnabled(); override;

Sets the value for the Enabled property.

  class function GetControlClassDefaultSize; override;

Class function which returns the default size used for the class.

  procedure CalculatePreferredSize(); override;

Calculates the preferred width and height for the control.

  function CanChange; virtual;

Indicates whether a change using the control can be applied.

  procedure Notification(); override;

Notification calls inherited method; if the operation requires removal of the associate control, this is performed.

  procedure Click(); virtual; overload;

Handles a mouse click on a speed button in the control.

  property AlignButton: TUDAlignButton; [rw]

AlignButton - how to align the button: left or right.

  property ArrowKeys: Boolean; [rw]

Enables or disables button clicks when cursor keys are pressed in the Associate control.

  property Associate: TWinControl; [rw]

Control used to display and edit the Position for the control.

  property Increment: Integer; [rw]

The amount by which Position is increased or decreased for each button click.

  property Max: SmallInt; [rw]

The largest value allowed in the Position property.

  property Min: SmallInt; [rw]

The smallest value allowed in the Position property.

  property MinRepeatInterval: Byte; [rw]

Minimum interval that must elapse before the action for the control is repeated.

  property OnChanging: TUDChangingEvent; [rw]

Event handler signalled prior to changing the value in the Position property.

  property OnChangingEx: TUDChangingEventEx; [rw]

Event handler signalled to determine if the control can change the value in the Position property.

  property OnClick: TUDClickEvent; [rw]

Event handler signalled when a button on the control is clicked.

  property Orientation: TUDOrientation; [rw]

Indicates the horizontal or vertical orientation for the button(s) displayed on the control.

  property Position: SmallInt; [rw]

The current position (or value) for the control as a SmallInt type.

  property Thousands: Boolean; [rw]

Enables or disables use of the thousands separator when displaying the text for the Position property.

  property Flat: Boolean; [rw]

Indicates whether the speed buttons for the control are drawn using a flat appearance.

  property Wrap: Boolean; [rw]

Enables or disables wrap-around for the value in Position when it exceeds the limits in Min or Max.

public

  constructor Create(); override;

Constructor for the class instance.

  destructor Destroy; override;

Destroy - destructor for TCustomUpDown: removes connection with associate control and calls inherited Destroy.

end;

TCustomUpDown

TCustomUpDown - base class for TUpDown - a pair of arrow-like buttons which are used to increment or decrement some controlled variable; often attached to a scroll-bar but can also control a digital numeric display.

TCustomControl

The base class for windowed controls which paint themselves.

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,IUnknown,IInterfaceComponentReference

TPersistent,IFPObserved

TObject