AsKnob tech info

AsKnob

Following is a brief description of most of properties and events you can find in AsKnob Component. Many common properties in usual knob controls are not included here (i.e. position, max, min, etc). Red items are new in this release.

OnChange Event

Occurs immediately after the value of Position changes.

property ShowCaption: Boolean;

Specifies if control's caption is visible.

property Appearance:

Appearance class encapsulates all visual properties of the control.

property Appearance. FaceColor : TColor;

Background color of the control when "SkinType" property is stSolid or stSolid3D.

property Appearance. FixToTicks: Boolean;

Use FixToTicks to select a segmented or steady movement of the control.

property Appearance.KnobType: (ktScale,ktSingleTurn,ktMultiTurn);

Use KnobType to change the behavior of the control. ktScale confines knob's movement to the highest 3/4 complete rotation (270º). ktSingleTurn, and ktMultiTurn use the complete circumference with lowest and highest value on top.

property Appearance.LedOffColor: TColor;

Defines the color of the indicator led when the control is not being moved.

property Appearance. LedOnColor: TColor;

Defines the color of the indicator led when the control is being moved. This property have an effect only when "LedStyle" property is set to lsLed.

property Appearance. LedStyle: (lsCarved, lsLed, lsLine);

Specifies different default indicator leds for the control.

property Appearance.MarkColor: TColor;

Color of the Marks.

property Appearance. MarksCount: Integer;

Number of big divisions of the control's scale. Total number of marks drawn wil be (MarksCount + 1) since starting mark is not considered in the property.

property Appearance. MetalColor: TColor;

Specifies control's background color when "SkinType" property is set to stMetal or stMetal3D type. You shouldn't choose an extreme (dark or light) color since reflex could loose the realistic effect. Default MetalColor gives to the control a clBtnFace mean background color.

property ShowTicks : Boolean;

ShowTicks property set visible (or not) the indicator divisions of the knob's scale.

property Appearance.SkinType: (stSolid, stSolid3D, stMetal, stMetal3D, stRaisedCurved, stLoweredCurved);

Specifies different default skins for the control.

property Appearance. TextStyle: (tsNone, tsRaised, tsLowered);

Specifies kind (2D or 3D) of caption text.

property Appearance. TickColor: TColor;

Color of the Ticks.

property Appearance. TicksCount: Integer;

Number of small divisions of the control's scale. Total number of ticks drawn wil be (TicksCount + 1) since starting tick is not considered in the property.

property Appearance.TurnsCount: Integer;

Specifies number of turns in a multiturn knob. If TurnsCount takes value 1 with a KnobType = ktMultiTurn this last property changes automatically to ktSingleTurn.

As Components for Instrumentation - supported by Azabache Systems