TTrackBar

type TTrackBar = class(TCustomTrackBar)

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 Constraints;

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

  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 Frequency;

Frequency - how frequently the position of the slider is to be read and updated (currently unsupported)

  property Hint;

Hint - a small informative pop-up box that appears when the mouse 'hovers' over a control

  property LineSize;

Line-Size - increment for slider position when an arrow key is pressed

  property Max;

Max - the value corresponding to full movement of the slider. Default = 10

  property Min;

Min - the value associated with the minimum slider position. Default = 0

  property OnChange;

OnChange - action to be taken on change in the slider position

  property OnChangeBounds;

Event handler for a change in bounds of the control

  property OnClick;

Event Handler for mouse click

  property OnContextPopup;

Event handler to supply information when a context-sensitive pop-up menu is required

  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 OnMouseDown;

Event handler for when a mouse button is pressed down

  property OnMouseEnter;

Event handler for when the mouse enters the area of the current control

  property OnMouseLeave;

Event handler for when the mouse leaves the area of the current control

  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 OnMouseWheel;

OnMouseWheel - event handler for a movement of the mouse wheel

  property OnMouseWheelDown;

OnMouseWheelDown - event handler for downward movement of mouse wheel

  property OnMouseWheelUp;

OnMouseWheelUp - event handler for upward movement of mouse wheel

  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 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 Orientation;

Orientation - horizontal or vertical

  property PageSize;

PageSize - increment for slider position when PageUp or PageDown key is pressed

  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 Position;

Position - the location of the slider along the track bar. Represents the Return value from the control

  property Reversed;

  property ScalePos;

ScalePos - whether scaling label appears at top, bottom, left or right

  property SelEnd;

  property SelStart;

  property ShowHint;

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

  property ShowSelRange;

  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 TickMarks;

Tickmarks - whether the ticks are above/left, below/right, or both

  property TickStyle;

TickStyle - none, produced automatically, or calculated manually

  property Visible;

Visible - can the control be seen?

end;

TTrackBar

TTrackBar: a device which allows the user to determine the value of a variable using a quasi-analog slider

TCustomTrackBar

TCustomTrackBar - the base class for TTrackBar

TWinControl

TControl

TLCLComponent

TLCLComponent - base class for LCL components

TComponent,IUnknown,IInterfaceComponentReference

TPersistent

TObject

HowToUseStdCtrls

How to use StdCtrls, ComCtrls or ExtCtrls