Version Information
Release Notes, Update information, Certifications and Frequently Asked Questions.
Concepts
Your first step into modern and powerful process visualization.
Deployment
Topics, you need to know, before using WinCC OA.
Security
Go beyond the norm in cybersecurity.
Engineering
Powerful tools for easy or complex engineering tasks.
Data Management
Classify, structure and archive your data.
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
- CONTROL Functions
  - Funtions A
  - Funtions B
  - Funtions C
  - Funtions D
  - Functions E
  - Functions F
  - Functions G
  - Functions H
  - Functions I
  - Functions J
  - Functions K
  - Functions L
  - Functions M
  - Functions N
  - Functions O
  - Functions P
  - Functions Q
  - Functions R
  - Functions S
  - Functions T
  - Functions U
    - udpClose()
      Closes the connection to a UDP socket.
    - udpOpen()
      Opens a connection to a UDP socket.
    - udpRead()
      Reads the data from a UDP socket.
    - udpWrite()
      Writes data to the passed UDP socket (host).
    - uiConnect()
      The function allows you to connect to a specific event with a callback function and call this callback function in case the connected event is triggerd. This is a similar behavior to e.g. ControlA_D/dpConnect.html
    - uiConnectUserData()
      The function allows to connect to a specific event with a callback function and call this callback function in case the connected event is triggerd. This is a similar behavior to e.g. dpConnect(). Additionally to uiConnect() specific user data can be passed to the callback function.
    - uiDisconnect()
      The function allows to disconnect previously established connections of the functions uiConnect() and uiConnectUserData().
    - uniDynPatternMatch()
      Checks whether particular strings in a dynamic field have a specific pattern.
    - uniFPrintf()
      Writes to a file.
    - uniFPrintfPL()
      Writes to a file similar to uniFPrintf() except changes to the current WinCC OA language before converting.
    - uniFPrintfUL()
      Writes to a file similar to uniFPrintf() except changes to the current Windows user language before converting.
    - uniPatternMatch()
      Checks whether particular string have a specific pattern.
    - uniSPrintf()
      Formats a string.
    - uniSPrintfUL()
      Formats a string.
    - uniStrChange()
      Changes the content of a string at a specific index for a defined count of digits with a replacing string.
    - uniStrExpand()
      Returns a formatted string.
    - uniStrFormat()
      Returns a formatted string.
    - uniStrLen()
      Returns the length of a string.
    - uniStrPos()
      Returns the position of a string within another.
    - uniStrReplace()
      Replaces parts of a string with another string.
    - uniStrTok()
      Searches a string for the first occurrence of any of a set of characters.
    - uniStrToLower()
      Changes a string to lowercase.
    - uniStrToUpper()
      Converts a lower-case string to a string in capital letters.
    - uniSubStr()
      Cuts a string or a character of a certain length (characters) out of another string.
    - unzip()
      The function unpacks a file into a specified directory.
    - uploadPreparedValues()
      The method uploads values from the internal data structure to MindSphere.
    - urlDecode()
      The function decodes a percent-encoded URL into a regular string.
    - urlEncode()
      The function encodes a string into a percent-encoded string to be used within a URL.
    - useQueryRDBDirect()
      The function checks if RDB (Oracle) is used for queries.
    - useRDBArchive()
      The function useRDBArchive() checks if RDB archives are used for the archiving in a project.
    - useRDBGroups()
      The function useRDBGroups() checks if RDB groups are used for archiving.
    - userDefFunc()
      Calls C++ functions.
    - usesTouchScreen()
      Query if the UI is currently using touch-input mode or mouse mode..
    - useValueArchive()
      The function checks whether the valueArchive archiving is used.
    - usr_deleteSetting()
      Deletes a user setting from the configuration management.
    - uss_getGenericSetting()
      Reads all user or user group settings without hierarchy.
    - uss_getMyUsergroup()
      Returns the user group with the lowest position ID.
    - uss_getSpecificSetting()
      Reads a specific user(group) setting without hierarchy.
    - uss_getSpecificUserSetting()
      Reads a specific user setting with hierarchy.
    - uss_getUserSettings()
      Reads all user settings with hierarchy.
  - Functions V
  - Functions W
  - Functions X
  - Functions Y
  - Functions Z
- 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.

uniStrPos()

Returns the position of a string within another.

Synopsis

int uniStrPos(string s, string searchstr[, int startPos = 0]);

Parameters


Parameter	Description
s	String to be examined
searchstr	String searched for
startPos	Optional parameter. Start position for the search in the string.

Return value

Position number, if searchstr is not found within s -1, or in the event of an error -2 is returned.

Errors

Missing/incorrect arguments

Description

Returns the position (character position) of the string searchstr (the first occurrence of search) within the string s. For the first character of s it is equal to zero, for the second 1 etc. If searchstr is not found within s, -1, in the event of an error -2, is returned.

Example

main()
{
  /*Returns the position of a string within another. */
  string SString = "This is a search for the position of a
  string";
  string SeString = "string";
  int starPos = 0;
  int c = uniStrPos(SString, SeString,starPos);
  DebugN("The position of the string:", c);
}

Assignment

Strings

Availability

CTRL