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Business Logic / Control
Endless possibilities in data processing for your projects.
Control graphics
Slider
"tracking"
The attribute "tracking" specifies whether the slider tracking is enabled.

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Business Logic / Control
Endless possibilities in data processing for your projects.
- Introduction to CTRL
  An introduction to the product's own programming language Control(CTRL).
- Control Classes
  The overview of classes available in Control.
- Types of Control Functions
  An overview of the types of functions distinguished within Control.
- Control graphics
  - Graphics objects
  - Attributes of graphics objects
  - Panel functions
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  - DialGauge EWO
  - DoubleSpinbox EWO
  - DpTreeView
  - DpTypeView
  - Embedded module
  - Frame
  - GIS Viewer EWO
    WinCC OA GIS Viewer provides the cartographic representation of objects in WinCC OA. This new feature provides numerous advantages, particularly in geographical distributed systems, like in Water, Traffic, Oil & Gas or Energy.
  - Label Functions
  - Layoutgroup functions
  - LCD number
  - Maps Widget - Eigenschaften und Funktionen
  - PDF Viewer EWO
  - PictureFlow EWO functions
  - Pipe
  - Polyline
  - Primitive text
  - Progress bar
  - Radio box
  - Rectangle
  - Reference Functions
  - Scheduler.ewo
  - Selection list
  - Slider
    - "acceptDrops"
      Specifies whether drop events are enabled for this object.
    - "BorderWidth"
    - "contextMenuPolicy"
      Defines how the respective widgets shows the context menu.
    - "focus"
      The attribute "focus"; returns TRUEif the object has the focus.
    - "focusEnabled"
      Indicates whether the widget accepts keyboard focus.
    - "height"
      The attribute "height" returns the height of an object (textEdit, progress bar, tree widget, zoom navigator, LCD number or a thumb wheel.)
    - "imageToClipboard"
    - "imageToFile"
      Saves an image of a graphics object (screenshot).
    - "invertedAppearance"
      Changes the direction of the slider into top = minimum value and bottom = maximum value.
    - "invertedControls"
      Defines if the key and wheel events of the slider shall be inverted.
    - "isActiveWindow"
      The attribute "isActiveWindow"; returns TRUE if this widget is the active window, otherwise FALSE.
    - "layoutDirection"
      Defines the widget's layout direction.
    - "lineStep"
      Specifies the current line step of a slider when using the cursor keys.
    - "maximum"
      Defines the upper limit of the value range.
    - "maximumHeight, maximumWidth"
      The attribute "maximumHeight"; returns the maximum height of a textEdit (excluding any window frame), a tree widget or a slider and the attribute "maximumWidth"; the maximum width of a textEdit, a tree widget or a slider.
    - "minimumHeight, minimumWidth"
      The attribute "minimumHeight"; returns the minimum height of a textEdit (excluding any window frame), a tree widget or of a slider and the attribute "minimumWidth"; the minimum width of a textEdit, tree widget or a slider.
    - "maxValue";
      The attribute "maxValue"; sets the maximum value, which is returned when a slider is moved to maximum position. In case of thumb wheel the thumb wheel is moved between the minimum and maximum value.
    - "minimum"
      Defines the lower limit of the value range.
    - "minValue"
      The attribute "minValue"; sets the minimum value, which is returned when a slider is moved to minimum position. In case of thumb wheel the thumb wheel is moved between the minimum and maximum value.
    - "orientation";
      Sets the orientation of a slider, a thumb wheel, a progress bar or a spacer.
    - "ownCursor";
      The attribute "ownCursor" returns TRUE if an object (for example a textEdit, a tree widget, a slider, a zoom navigator or a thumb wheel) uses its own cursor. If the value is FALSE, the object uses its parent widget`s cursor.
    - "ownFont";
      The attribute "ownFont"; returns TRUE if an object (for example, a textEdit, a slider, a zoom navigator or a tree widget) uses its own font. If the value is FALSE, the object uses its parent widget`s font.
    - "pageStep";
      Specifies the step of a slider when pressing PageUp / PageDown or clicking with the mouse on the slider.
    - "singleStep"
      Defines the value for a step if you press the arrow keys.
    - "sliderDown"
      This property shows whether the slider is currently pressed down by the mouse.
    - "sliderPosition"
      Shows the current slider position.
    - "tickInterval"
      Sets the interval between the tick marks.
    - "tickPosition"
      Defines where the position marks of a slider are to be drawn.
    - "tooltipDuration"
      Specifies how long a tooltip is shown.
    - "tracking"
      The attribute "tracking" specifies whether the slider tracking is enabled.
    - "underMouse"
      Returns TRUE if a widget (textEdit, slider, thumb wheel, tree widget, zoom navigator, LCD number or progress bar) is beneath the cursor.
    - "updatesEnabled"
      This attribute specifies whether updates of a widget (for example, a textEdit, slider, progress bar, zoom navigator, LCD number or thumb wheel) have been enabled.
    - "value"
      Sets the current value of a slider.
    - "width"
      The attribute "width" returns the width of an object (e.g. a textEdit, a zoom navigator or a slider).
    - "x", "y"
      The attributes x and y return the coordinate of an object (e.g. a textEdit, a progress bar, a slider, a zoom navigator, an LCD number or a thumb wheel). x returns the X coordinate of an object. y returns the Y coordinate of an object.
  - Spin button
  - Splitter
  - Tab
  - Table
  - TextEdit
  - Text field
  - Thumb wheel
  - ToggleSwitch EWO
  - Tree widget
  - Trend
  - VideoPlayer.ewo
  - WebView EWO
  - Zoom Navigator
    Functions available for the Zoom Navigator widget.
- CONTROL Functions
- CtrlExtension
  Die CtrlExtension ermöglicht das Hinzufügen von benutzerdefiniertem C++-Code.
- CTRL-Debugger
  Der CTRL-Debugger ermöglicht ein Debuggen der Pogrammiersprache Control. Der Debugger kann über ein eigenes Panel verwendet werden, welches es auch erlaubt die Variablen zu beinflussen, Breakpoints zu setzen, usw.
- SQL in CONTROL
  Mit den Datenbankfunktionen besteht eine Möglichkeit, Werteabfragen von Datenpunkten und -elementen schnell durchzuführen.
- API Manager
  Das API von WinCC OA (Application Programming Interface) bietet eine Reihe von Funktionen, die es ermöglichen, dieses Prozessleitsystem um spezielle Manager zu erweitern.
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"tracking"

The attribute "tracking" specifies whether the slider tracking is enabled.

Synopsis

shape.tracking(bool mode);

Parameter


Parameter	Description
shape	Name of the object
mode	TRUE = enabled FALSE = disabled

Description

The attribute "tracking" specifies whether the slider tracking is enabled. If tracking is enabled (the default), the slider emits the valueChanged() signal whenever the slider is being dragged. If tracking is disabled, the slider emits the valueChanged() signal when the user releases the mouse button. (in other words the attribute specifies how often the "change" script is called: only when you release the mouse button or when the slider is being dragged.

Assignment

Slider