CONTROL
- Introduction to CTRL
- Control Classes
- Types of Control Functions
- Control graphics
  - Graphics objects
  - Attributes of graphics objects
  - Panel functions
  - Reference Functions
  - Arc
  - AttentionEffect EWO functions
  - Bar trend
  - BarChart3D EWO
  - Button
  - Chart.ewo
  - Calendar
  - Cascade
  - Checkbox
    - "acceptDrops"
      Specifies whether drop events are enabled for this object.
    - "appendItem_combo"
      Adds an item to the combo box, spin button, radio box or check box.
    - "clearItems"
      Clears all items except the first one from check box.
    - "enabled"
      Sets a checkbox active or inactive (TRUE or FALSE). TRUE, however, does not mean that a check box is automatically activated. When the value has been set to TRUE, the check box can then be activated by a user.
    - "events" (obsolete)
      Gets all events that are available for a shape. Obsolete, use scriptNames instead.
    - "font"
      Sets the font of an object.
    - "itemCount"
      Returns the number of options.
    - "itemEnabled"
      The attribute "itemEnabled"; enables or disables an item in an radio box or a check box.
    - "itemGeometry"
      The read-only property delivers top-left start coordinates as well as width and height of an item in the widget.
    - "state"
      Sets or reads the status of a check box.
    - "text"
      Sets the text in the n-th check box option or reads it.
    - "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.
  - Clock
  - Combobox
  - DateTimeEdit EWO functions
  - 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 - Properties and Functions
  - PDF Viewer EWO
  - PictureFlow EWO functions
  - Pipe
  - Polyline
  - Primitive text
  - Progress bar
  - Radio box
  - Rectangle
  - Reference Functions
  - Scheduler.ewo
  - Selection list
  - Slider
  - 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, basics
- CTRL Debugger
  You can use the CTRL debugger to debug the Control programming language. The debugger can be used via its own panel, which also enables the monitoring and setting of variable values during the execution of a script.

"clearItems"

Clears all items except the first one from check box.

Synopsis

setValue( string shape, "clearItems");

shape.clearItems( );

Parameters


Parameter	Description
shape	Name of the object

Description

This function removes all entries except the first one from the check box.

Assignment

Check box