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Business Logic / Control
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Control graphics
DialGauge EWO
"showGlass"
Defines whether the glass lid of the EWO shall be visible or not.

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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
  - Reference Functions
  - Arc
  - AttentionEffect EWO functions
  - Bar trend
  - BarChart3D EWO
  - Button
  - Chart.ewo
  - Calendar
  - Cascade
  - Checkbox
  - Clock
  - Combobox
  - DateTimeEdit EWO functions
  - DialGauge EWO
    - "acceptDrops"
      Specifies whether drop events are enabled for this object.
    - "addMarking"
      Adds a colored marking to the scale.
    - "backgroundBrush"
      Defines the fill-pattern for the background of the EWO.
    - "contextMenuPolicy"
      Defines how the respective widgets shows the context menu.
    - "focus"
      The attribute "focus"; returns TRUEif the object has the focus.
    - "isActiveWindow"
      The attribute "isActiveWindow"; returns TRUE if this widget is the active window, otherwise FALSE.
    - "layoutDirection"
      Defines the widget's layout direction.
    - "markingStyle"
      Defines the style of the specified scale markings.
    - "maxAngle"
      Defines the position of the maximum value of the specified value range.
    - "maximum"
      Defines the upper limit of the value range.
    - "minAngle"
      Defines the position of the minimum value of the specified value range.
    - "minimum"
      Defines the lower limit of the value range.
    - "needleBrush"
      Defines the fill-pattern for the needle.
    - "needleCenterShift"
      Defines the center of the scale (=pivot point of the needle).
    - "needleColor"
      Defines the color of the needle.
    - "removeAllMarkings"
      Deletes all markings which are set in the appropriate EWO.
    - "scaleRadiusDelta"
      Allows to change the size of the scale radius by the given delta value.
    - "showCasing"
      Defines whether the casing of the EWO shall be visible or not.
    - "showGlass"
      Defines whether the glass lid of the EWO shall be visible or not.
    - "showNeedleKnob"
      Defines if only the needle or the needle and the knob shall be displayed.
    - "showTickLabels"
      Defines if the values at the large tick marks shall be displayed.
    - "skin"
      Defines the appearance of the EWO.
    - "textPosition"
      Allows you to change the text position and rotation for the gauge text.
    - "tickStyle"
      Defines the style for the scale.
    - "tooltipDuration"
      Specifies how long a tooltip is shown.
    - "unit"
      Allows to specify a unit which is shown at the EWO.
    - "unitPosition"
      Defines the position where the unit shall be displayed.
    - "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.
    - "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.
  - 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
    All functions, specifically available for the WebView EWO.
  - Zoom Navigator
    Functions available for the Zoom Navigator widget.
- CONTROL Functions
- CtrlExtension
  The CtrlExtension allows the addition of custom C++ code.
- 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.
- SQL in CONTROL
  The database functions enable you to quickly carry out value queries on data points and elements.
- API Manager
  The WinCC OA API (Application Programming Interface) offers a number of functions adding special Managers to this process control system.
- NextGen Archiver Backend-API
  This chapter describes the NextGen Archiver Backend API
Data Visualization
User interfaces, Trends and Reports for every purpose and device.
Southbound Interfaces
The process connection to the actual machines/sensors.
Northbound Interfaces
Your portal to the cloud or supervising systems.
Web Connectivity / Network Interfaces
Data exchange, APIs and web technologies
User Management
All about authorization, authentication and login-customization.
Availability
How to get your system uptime to the maximum.
Reporting
Create state of the art project reports without limits.
Addons
Useful tools and enhancements for special demands.
Reference Tables
Detailed and extensive content for special project adaptation.
Videos & Tutorials
Explore the capabilities of WinCC OA with our carefully selected collection of video tutorials and guides.
WinCC OA Documentation
Basic information about terms and functions within the documentation.
Disclaimer
A brief clarification of liability exclusions or legal notices.

"showGlass"

Defines whether the glass lid of the EWO shall be visible or not.

Synopsis

shape.showGlass(bool);

Parameters


Parameter	Description
bool	Defines the visibility of the glass lid. TRUE = visible or FALSE = invisible.

Description

Defines whether the glass lid of the EWO shall be visible or not.

Assignment

DialGauge EWO