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...
LooperInsert (Function)
Inserts a row into a Looper control.
GglGetLicense (Function)
Returns the text of license for using the Google libraries.
Keyboard Variable (Using physical keyboards on Android)
The Keyboard variable makes it possible to retrieve the parameters of the events of a physical keyboard......
Error 1004: To explicitly access an element of the base class '%1', use the syntax
Developing multilingual applications
A multilingual application is an application that can be distributed in several languages......
HPrepareSQLQuery (Function)
Initializes a query written in SQL language and declares this query to the database server in order to optimize the next executions of this query.
iPrintingNation (Function)
Modifies the current language for the next print (programmed print or report print).
HBuildKeyValueANSI (Function)
Regardless of the platform used, the data stored in the HFSQL files is in ANSI format.
The HTML Editor control
The HTML Editor control allows users to create and modify HTML pages......
The different types of integers
RTFAddLink (Function)
Adds a link to a text section in an RTF Edit control.
MaskTitleTime (Property)
The MaskTitleTime property is used to get or change the mask used for the title of time columns: in an Organizer control. in a Scheduler control. in a TimeLine control....
Password (Property)
The Password property can be used: on the edit controls (or on the text table columns) to find out whether the control is a "Password" control or to modify the "Password" type of the control. on the connections (HFSQL Client/Server, OLE DB, etc.) to define the password of the user who uses the connection....
HDeleteFile (Function)
Deletes the HFSQL data files (.fic, .ndx, .ftx and .mmo files if they exist) from the server.
WDBal messaging: Overview
WDBal is a secure messaging, included in WINDEV, WEBDEV and WINDEV Mobile......
Creating an executable: Information and version number
The version information of an executable corresponds to the information visible in the Windows file explorer....
Handling data files in PHP
WEBDEV allows you to create a PHP site that handles data files......
Hint (Property)
The Hint property gets and sets the hint text displayed when the Edit control is empty.
4. Debugging modes
There are two different modes to debug a WINDEV Mobile application...
TokenAllowDuplicate (Property)
The TokenAllowDuplicate property is used to: Allow or prevent the user from entering duplicates in a "Text token" Edit control. Determine if duplicates are allowed in a "Text token" Edit control....
HToFile (Function)
Copies a data source (file, query, view, ...) to a physical HFSQL file with the same description. This file is neither encrypted nor password protected.
AppleAdvertisingIdentifier (Function)
Returns the device's advertising identifier (iOS only)....
URIToFile (Function)
Saves, in the background, the content of a resource (image, text, etc.) identified by its URI in an external file.
TableModify (Function)
Modifies a row in: a Table control, a TreeView Table control, a table displayed in a Combo Box control....
URIToBuffer (Function)
Loads in the background the content of a resource (image, text, etc.) identified by its URI in a buffer variable.
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