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Business Logic / Control
Endless possibilities in data processing for your projects.
Types of Control Functions
An overview of the types of functions distinguished within Control.
System Tray
sysTrayIsAvailable()
Returns whether a system tray is available on the desktop.

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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.
  - 32/64 bit Functions
  - Administration of Managers, Modules and Panels - Functions
  - Alert Handling Functions
    These functions are associated with datapoints and respond to alerts and changes to alerts.
  - Blob Functions
  - Communication Functions
  - Connection Functions
    Connection functions can be used to establish connections to alerts, datapoints and system events.
  - Crypthographic Functions
  - Database Functions
  - Datapoint Functions
  - DirectWrite for PLC's (OPC UA Driver)
    This chapter provides an overview of the DirectWrite feature for PLC's (OPC UA Driver)
  - Error Functions
  - File Functions
    File functions allow you to import, export, open, close, and manipulate files within the application. This topic describes how to use file functions and important considerations for cross-platform compatibility.
  - Graphics Functions
  - Help Viewer Functions
    Available Functions for the Help Viewer.
  - Input Recording Functions
  - Mapping Functions
  - Mathematical Functions
  - MindSphere Connector Functions
  - Miscellaneous Functions
  - Multilingual Functionality
  - Project administration Functions
  - Query Functions
  - Redu/Dist Functions
  - Reference - Focus Policy - Functions
  - Selection and Configuration Dialogs - Functions
  - Semaphore Functions
  - String Functions
  - Subscription-based Licensing Functions
    CONTROL functions for querying information from subscription-based licenses.
  - System Tray
    - sysTrayAddAction()
      Creates an action for the system tray context menu and returns its internal ID.
    - sysTrayAddSubMenu()
      Creates a submenu in the system tray context menu and returns its internal ID.
    - sysTrayGet()
      Retrieves the current value of a specified system tray attribute.
    - sysTrayGetAction()
      Returns the value of a given attribute for a system tray action identified by its ID. Supports checking if an action exists and reacting to system tray events.
    - sysTrayIsAvailable()
      Returns whether a system tray is available on the desktop.
    - sysTraySet()
      Sets an attribute for the system tray icon to a specified value.
    - sysTraySetAction()
      Changes an attribute of a system tray action identified by its ID.
    - sysTrayShowMessage()
      Shows a balloon message in the system tray with a given title, message, icon, and timeout.
    - sysTraySupportsMessages()
      Returns whether the system tray supports balloon messages.
  - Time Functions
  - Threads Functions
  - User Administration Functions
  - Vector / Dynamic arrays - Functions
  - Waiting Control Functions
  - Window Functions
    This chapter lists all functions used to control windows and panels, such as ChildPanelOn, LayerOn, LayerOff, PanelOff, RootPanelOn, SwitchLayer, ZoomModule, and related dialog and module operations.
  - Window Functions
    This chapter lists all functions used to control windows and panels, such as ChildPanelOn, LayerOn, LayerOff, PanelOff, RootPanelOn, SwitchLayer, ZoomModule, and related dialog and module operations.
  - XML Control Extension Functions
- Control graphics
- 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 datapoints and elements.
- WinCC OA JavaScript Manager for Node.js
  The WinCC OA JavaScript Manager for Node.js is a manager that allows for the integration of the TypeScript/JavaScript runtime environment Node.js® into WinCC OA.
- API Manager
  The WinCC OA API (Application Programming Interface) offers a number of functions adding special Managers to this process control system.
Data Visualization
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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.
Documentation
Basic information about terms and functions within the documentation.
Support & Services
An experienced team of support agents, consultants and trainers are ready to facilitate active partnerships with our customers, so they can profit from our comprehensive service.
Disclaimer
A brief clarification of liability exclusions or legal notices.

sysTrayIsAvailable()

Returns whether a system tray is available on the desktop.

Synopsis

bool sysTrayIsAvailable()

Parameter


Parameter	Description
-	-

Return Value

Returns true if a system tray is available on the desktop, otherwise false.

Details

Availability

CTRL

Assignment

System Tray