vcl-dxrangecontrol.md
TdxRangeControl = class(
TdxCustomRangeControl
)
A range control is designed to help end-users select intervals and data ranges. When integrated with the DevExpress Scheduler control, it behaves like a timeline track bar, and allows quick timeline navigation and selection of date intervals.
The range control features:
Multiple ways to select a range using its selection thumbs and drag & drop;
Animated scrolling and zooming using the Zoom&Scroll bar and mouse wheel;
Four built-in clients for range selection (see below);
Support for custom clients (objects that implement the IdxRangeControlClient interface);
Customizable appearance options for UI elements, including a custom paint mechanism.
Four built-in clients provide support for:
Date range selection in a linked Scheduler control (TdxRangeControlDateTimeClientProperties);
Numeric (integer, float, or currency) range selection (TdxRangeControlNumericClientProperties);
Date-time range selection (TdxRangeControlDateTimeClientProperties);
Date-time range selection using clickable intervals (TdxRangeControlDateTimeHeaderClientProperties).
To select the client type for the range control, use its ClientPropertiesClass or ClientPropertiesClassName property.
The TdxRangeControl class implements a range control. This class does not introduce any new functionality except for publishing properties and events inherited from its ancestor class. Refer to the TdxCustomRangeControl class description to learn more.
TObject TPersistent TComponent TControl TWinControl TCustomControl TcxCustomControl TcxControl TdxCustomRangeControl TdxRangeControl
See Also