ONLINE HELP
 WINDEV, WEBDEV AND WINDEV MOBILE

Version: 2025
Character string: How do I extract, delete or replace words?
This page presents the main operations that can be performed on a character string.
JSONToString (Function)
Converts the content of a JSON variable to a JSON string.
LineToPosition (Function)
Returns the position of the first character of a line in a block of text.
CommonLength (Function)
Returns the number of common characters between two strings (from the beginning or from the end of the string).
Pascal string of (Variable type)
The Pascal string of type corresponds to a length-prefixed string (this length is stored as a byte value). This type of variable is kept for backward compatibility.
String literals: single-line and multiline strings
String literals are used to represent and manipulate data as a sequence of characters. For example, string literals can be used to display information, define a constant, etc.
fInsertTextAtBeginning (Function)
Inserts text at the beginning of a file without overwriting the existing text.
Unicode in character strings
The Unicode format is an encoding system that assigns a unique number to each character.
NoCharacter (Function)
Returns a string after removing the specified leading and trailing characters.
<ANSI string>.CharactTypeCount (Function)
Returns the number of characters matching a given type.
WordCount (Function)
Returns the number of words in a string.
String functions (prefix syntax)
The following functions are used to handle strings, using prefix syntax:
StringIncrement (Function)
Increments a number at the beginning or at the end of a string.
StringReverse (Function)
Reverses the characters of a string.
ASCIIZ string of (Variable type)
The ASCIIZ string of type is used to manipulate strings with a null character at the end, denoted by a zero (as in the C programming language).
<ANSI string>.Insert (Function)
Inserts a string into another character string at a given position.
StringToJSON (Function)
Converts a JSON string into a JSON variable.
PositionToLine (Function)
Returns the number of the line that contains a character identified by its position in a block of text.
Position (Function)
Finds the position of a specified string within another string.
RTFReplace (Function)
Replaces or inserts a character string in an RTF control (found in a window or in a report) or in a string in RTF (containing a text in RTF).
String (Variable type)
The String type is used to manipulate strings...
FOR ALL/FOR EACH statement (browse of strings)
The FOR EACH statement is used to browse strings according to different methods...
PositionOccurrence (Function)
Finds the Xth position of a string within another string.
Phonetic (Function)
Returns the phonetic transcription of the string passed as parameter.
<ANSI string>.EndsWith (Function)
Checks whether a character string ends with:
  • with a specific character string.
  • with one of the character strings in an array.
Length (Function)
Returns:
  • the length of a string, i.e., the number of characters in the string (including spaces and binary zeros).
  • the size of a buffer, i.e., the number of bytes in the buffer.
ExtractLine (Function)
Extracts a specific line from a character string.
<Unicode string>.RegexMatch (Function)
Checks whether a string matches the format defined by a regular expression.
UUEncode (Function)
Encodes a character string according to the UUEncode algorithm.
ExtractStringBetween (Function)
Allows you to:
  • extract a substring between two given separators from a character string.
  • search for substrings between two given separators in a character string.
Functions for managing RTF controls
List of functions for managing RTF controls
gToText (Function)
Deletes the graphic elements from a character string that uses gStoredValue, gImage, ...
String of (Variable type)
The String of type is used to manipulate fixed-length strings. These strings have a null character at the end, denoted by a zero (as in the C programming language).
<JSON variable>.ToString (Function)
Converts the content of a JSON variable to a JSON string.
NoAccent (Function)
Converts accented characters in a string to non-accented characters.
Unicode string on (Variable type)
The type Unicode string on is a fixed-length string containing only characters in Unicode format.
Truncate (Function)
Truncates the right part of a string or buffer.
StringDelete (Function)
Deletes:
  • all the occurrences of a substring within a string.
  • part of a string within another string. The part of the string to remove is identified by its position and length.
<ANSI string>.Reverse (Function)
Reverses the characters of a string.
WordToArray (Function)
Fills an array with the words from a string.
MatchRegularExpression (Function)
Checks whether a character string matches a specific format and retrieves the different substrings that match the format.
StringInsert (Function)
Inserts a string into another character string at a given position.
Multilingual messages: Convert to new format (version 27 and later)
WINDEV, WEBDEV and WINDEV Mobile have included multilingual project support in many previous versions...
StringEndsWith (Function)
Checks whether a character string ends with:
  • with a specific character string.
  • with one of the character strings in an array.
CharactTypeCount (Function)
Returns the number of characters matching a given type.
<ANSI string>.DeleteDuplicate (Function)
Removes duplicates among substrings of a string, based on one or more separators.
Translating programming messages
When developing a multilingual application, you can translate the different messages displayed to the user (messages displayed by Info and YesNo, for example.
StringDeleteDuplicate (Function)
Removes duplicates among substrings of a string, based on one or more separators.
<Table>.ToText (Function)
Creates a character string from the data found in a Table or TreeView Table control.
TextToXML (Function)
Converts an ANSI string to an XML string.
<ANSI string>.RegexMatch (Function)
Checks whether a string matches the format defined by a regular expression.
String functions
List of functions for managing character strings
Middle (Function)
Extracts:
  • a substring from a string starting at a specified position.
  • part of a buffer starting at a specified position.
<DiskFile variable>.Find (Function)
Finds a character string or a buffer in a file opened by fOpen.
NoLeftCharacter (Function)
Returns a string after removing the specified characters from the left side of the initial string.
RegexMatch (Function)
Checks whether a string matches the format defined by a regular expression.
Operators on character strings
The character strings can be handled by specific WLanguage functions or by the +, [[ and ]] operators...
<ANSI string>.Increment (Function)
Increments a number at the beginning or at the end of a string.
Project string manager
WINDEV, WEBDEV and WINDEV Mobile include a string management tool that allows you to view and manipulate all the strings used in the project (or in an element of the project)...
NoRightCharacter (Function)
Returns a string after removing the specified characters from the right side of the initial string.
Manipulate character strings
WINDEV, WINDEV Mobile and WEBDEV allow you to perform different types of operations on character strings via the WLanguage functions...
ImageInfoModify (Function)
Modifies the value of an Exif tag for the image used.
appServerScheduledTask (Type of variable)
The appServerScheduledTask type is used to manage a scheduled task of WEBDEV Application Server through programming (for a site or a webservice).
gglPostalAddress (Type of variable)
The gglPostalAddress type is used to describe and modify the postal address of a contact...
fbSession (Type of variable)
The fbSession type is used to describe a connection to the Facebook service and to manage the authentication to this service.
ImageInfoValue (Function)
Returns the value of an Exif tag for the image used.
rssSource (Type of variable)
The rssSource type is used to describe the source of an entry for an RSS stream...
Repetition (Type of variable)
The Repetition type is used to describe and modify the characteristics of a repetition for an appointment via the different WLanguage properties.
YAML (Type of variable)
The YAML type simplifies the handling of data in YAML format.
notificationAction (Type of variable)
The notificationAction type is used to describe an additional action associated with a notification.
HDescribeTrigger (Function)
Adds or modifies a trigger on an HFSQL data file.
JSONXMLConverter (Type of variable)
The JSONXMLConverter type is used to define all the advanced characteristics of the conversion of an XML object to JSON (or conversely) via XMLToJSON and JSONToXML).
Decrypt (Example)
Usage example of the Decrypt function
Encrypt (Example)
Usage example of the Encrypt function
gglContactGroup (Type of variable)
The gglContactGroup type is used to describe and modify a group of contacts used by the Google Contacts service...
FullTextIndex description (Type of variable)
A FullTextIndex description variable is used to describe one or more full-text indexes through programming.
LDAPSession structure
The LDAPSession structure is a preset structure of WLanguage (no declaration is required)......
hScheduledTask (Type of variable)
The hScheduledTask type is used to manage a scheduled HFSQL Client/Server task through programming......
aiNeuralNetworkModel (Type of variable)
The aiNeuralNetworkModel type is used to define all the advanced characteristics of a neural network used by AIDetectModel.
MapImage (Type of variable)
The MapImage type is used to define the characteristics of an image to be drawn on the map displayed in a Map control.
rssCategory (Type of variable)
The rssCategory type is used to handle the category of a RSS stream or stream entry.
gglAuthor (Type of variable)
The gglAuthor type is used to identify the author of a Google element...
hScheduling (Type of variable)
The hScheduling type is used to define and find out the characteristics of the scheduling that must be performed: for a scheduled optimization task of HFSQL Client/Server files. for a scheduled backup task of HFSQL Client/Server files. for a scheduled replication of HFSQL servers....
mongoGridFSFileInfo (Type of variable)
The mongoGridFSFileInfo type is used to define the advanced characteristics of a file in a MongoDB database.
Calendar (Type of variable)
The Calendar type is used to handle a calendar (or organizer) associated with a user account or found on the device.
gglConnection (Type of variable)
The gglConnection type is used to describe a connection to the Google services and to manage the authentication to different services...
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