CONTROL
- Introduction to CTRL
- Control Classes
- Types of Control Functions
- 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
- CTRL-Debugger
  Der CTRL-Debugger ermöglicht ein Debuggen der Pogrammiersprache Control. Der Debugger kann über ein eigenes Panel verwendet werden, welches es auch erlaubt die Variablen zu beinflussen, Breakpoints zu setzen, usw.

uniStrLen()

Returns the length of a string.

Synopsis

int uniStrLen( string s);

Parameters


Parameter	Description
s	String to be examined

Return value

The length of a string. The number of characters is returned.

Errors

missing/incorrect argument

Description

Returns the length of a string s . The number of characters is returned.

Example

main()
{
  string s= "This is a string";
  int a = uniStrLen(s); //uniStrLen
  DebugN("The length of a string:", a);
}

Assignment

Strings

Availability

CTRL