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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.
String Functions
"length" (string::lenght)
Returns the number of Unicode characters.

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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 data points and respond to alerts and changes to alerts.
  - Blob Functions
  - Communication Functions
  - Connection Functions
    Connection functions can be used to establish connections to alerts, data points and system events.
  - Crypthographic Functions
  - Database Functions
  - Data point Functions
  - Error Functions
  - File Functions
  - 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
    - "at" (string::at)
      Returns the character at the given index idx in the string.
    - "chop" (string::chop)
      Removes n characters from the end of the string.
    - "clear" (string::clear)
      Empties the string.
    - "contains" (string::contains)
      Returns true if this string contains an occurrence of the string s, otherwise false.
    - "count" (string::count)
      Returns the number of (potentially overlapping) occurrences of the string s in this string.
    - "indexOf" (string::indexOf)
      Returns the index position of the first occurrence of the string s in this string.
    - "insert" (string::insert)
      Inserts the string s at the given index pos.
    - "isEmpty" (string::isEmpty)
      Returns true if the string is empty.
    - "lastIndexOf" (string::lastIndexOf)
      Returns the index position of the last occurrence of the string s in this string.
    - "left" (string::left)
      Returns a substring that contains the n leftmost characters of the string.
    - "length" (string::lenght)
      Returns the number of Unicode characters.
    - "mid" (string::mid)
      Returns a string that contains n characters of this string, starting at the specified pos index.
    - "remove" (string::remove)
      Removes n characters from the string, starting at the given pos index.
    - "replace" (string::replace)
      Replaces part of a string with a new one.
    - "right" (string::right)
      Returns a substring that contains the n rightmost characters of the string.
    - "split" (string::split)
      Splits the string into substrings wherever sep occurs, and returns the list of those strings.
    - "startsWith" (string::startsWith)
      Returns true if the string starts with s, otherwise false.
    - "toLower" (string::toLower)
      Returns a lowercase copy of the string.
    - "toUpper" (string::toUpper)
      Returns an uppercase copy of the string.
    - "trim" (string::trim)
      Removes whitespace from the start and the end.
    - "trimmed" (string::trimmed)
      This function produces a trimmed, new instance of a string.
  - 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 data points 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.
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The process connection to the actual machines/sensors.
Northbound Interfaces
Your portal to the cloud or supervising systems.
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Data exchange, APIs and web technologies
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All about authorization, authentication and login-customization.
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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.
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Disclaimer
A brief clarification of liability exclusions or legal notices.

"length" (string::lenght)

Returns the number of Unicode characters.

Synopsis

int string.length();

Parameters


Parameter	Description
-	-

Description

Returns the number of Unicode characters (not bytes!) of the string (like uniStrLen())

Assignment

String