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CONTROL
Types of Control Functions
An overview of the types of functions distinguished within Control.
Mapping Functions
Mapping Methods
The Mapping object provides following methods.
"keyAt" (mapping::keyAt)
Returns the key at the given index position.

CONTROL
- Introduction to CTRL
  An introduction to the product's own programming language Control(CTRL).
- CONTROL Classes
- 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
  - Input Recording Functions
  - Mapping Functions
    - Mapping Methods
      The Mapping object provides following methods.
      - "clear" (mapping::clear)
        Empties the mapping.
      - "contains"(mapping::contains)
        Returns true if the key is already in the mapping.
      - "count" (mapping::count)
        Returns the number of keys.
      - "insert" (mapping::insert)
        Insert a key/value pair.
      - "isEmpty" (mapping::isEmpty)
        Returns true if the mapping is empty.
      - "keyAt" (mapping::keyAt)
        Returns the key at the given index position.
      - "merged" (mapping::merged)
        This function creates a new instance by merging two mappings.
      - "remove" (mapping::remove)
        Removes the key and the associated value.
      - "value" (mapping::value)
        Returns the value at given key or the defaultValue if the key is not found.
      - "valueAt" (mapping::valueAt)
        Returns the value at the given index position.
    - Mapping Functions
      The following functions are used for the handling of mappings.
  - 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
  - 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
- CTRL-Debugger
  Der CTRL-Debugger ermöglicht ein Debuggen der Pogrammiersprache Control.
- CtrlExtension
  Die CtrlExtension ermöglicht das Hinzufügen von benutzerdefiniertem C++-Code.

"keyAt" (mapping::keyAt)

Returns the key at the given index position.

Synopsis

T mapping.keyAt(uint idx);

Parameters


Parameter	Description
idx	mapping index

Description

Assignment

Mapping