ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

Environment of the query editor
When creating a class in the code editor, the Constructor and Destructor methods are automatically created by default...
Creating a query
Two methods can be used to create a query...
Creating an update query
An Update query (SQL UPDATE statement) is used to modify the records in a database file...
Sort order of records found in a select query
To make the result of a query easier to read, the records can be sorted according to one or more items...
Modifying the values displayed in the result of a select query
In the result of a select query, you have the ability to only display...
Select query description window
The description window of a select query includes several sections...
Operations in a Select query
The query editor allows you to perform operations on the values of an item...
Selection conditions of a query
The selection conditions of records are applied to the items used in the queries...
Test of a query
The query editor allows you to run the test of query result...
Describing a query
Once a query is created, all the characteristics of this query can be modified at any time...
Query creation mode: independent or embedded query
The query editor proposes two methods for creating a query...
Joins between the tables of a select query
When several tables are used in a query, the query editor automatically searches for the links between these tables described in the database schema...
Project comparator
Comparing two windows (two pages, two reports, two classes, ...
Creating an insert query
An insert query (corresponding SQL statement...
Items used in a select query
A query created in the query editor can contain several types of items...
Select query: Displaying the first/last n records
The editor of Select queries is used to limit the number of records that will be displayed in the result of the query.
Creating a combining query
A combining query (corresponding SQL statement: UNION) ...
Carrying over the differences from an element to another one
The project comparator is used to compare two elements and to list the differences found...
Example for creating a select query
This help page explains how to create two select queries...
Query: Displaying the records corresponding to a given period
When a "Date" item is found in the query, you have the ability to only select the records corresponding to a given period...
Result of a query in test mode
After its execution in test mode (see Running the query test), the result of the query can be...
HSuggestKeyEnd (Function)
Finishes collecting information on executed queries.
Handling the versions of a window, report, query or project
When creating and developing the different elements of a project (window, query, report, project, ...
Creating a delete query
A delete query (corresponding SQL statement...
Optimizing the query execution
The query editor allows you to optimize the execution speed of one or more queries...
Creating a select query
A select query (corresponding SQL statement...
iImageHeight (Function)
Calculates the height of the image to print (in millimeters).
Managing the automatic identifiers when adding a record
When adding a record into a HyperFileSQL file (HAdd), three management modes are available for the automatic identifiers......
ControlVisible (Function)
Makes a control (or a group of controls) visible in a window. During this operation, an animation can be performed on the controls.
BTAcceptConnection (Function)
Used to find out whether a Bluetooth radio accepts (or not) the requests for connection coming from the devices.
XMLWrite (Function)
Creates or modifies the value of an XML element or the value of the attribute for an XML element.
OrganizerDeleteAll (Function)
Deletes all the appointments from an Organizer control.
OrganizerPosition (Function)
Displays an Organizer control from a specified date or returns the date of the first day (or the date of the last day) displayed in an Organizer control.
fMakeDir (Function)
Creates a directory (and the intermediate directories if necessary).
fCopyDir (Function)
Copies the contents of a directory and its subdirectories.
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....
ListSelectCount (Function)
Returns the number of elements selected in a List Box, ListView or Combo Box control.
iPageHeight (Function)
Calculates the height of printable page (in millimeters) while taking the top or bottom margins into account.
The Radio Button control
The Radio Button control is a control allowing the user to select an option among several ones......
iImageWidth (Function)
Calculates the width of the image to print (in millimeters).
iPageWidth (Function)
Calculates the width (in millimeters) of the printable page while taking the left or right margins into account.
iTextWidth (Function)
Calculates the width (in millimeters) of the text to print, according to the specified font.
Sharing your source code with the SCM
WINDEV Tutorial - An SCM for WINDEV Sharing your source code with the SCM - 30 min
URI (Type of variable)
The URI (Uniform Resource Identifier) type identifies physical or abstract resources (e.g. files or Web pages).
fReadLine (Function)
Reads a line from an external file (ANSI or UNICODE).
dFont (Function)
Declares the font that will be used by dText: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable....
EmailReadLast (Function)
Reads the last incoming email according to the protocol used (POP3 or IMAP, MS Exchange, Lotus Notes or Outlook).
HLinkMemo (Function)
Used to associate a file with a binary memo item or to cancel the existing link between a file and a binary item.
HLockRecNum (Function)
Locks a record and restricts the access to this record for all the other applications.
EmailReadMessage (Function)
Reads an incoming according to the protocol used (POP3 or IMAP, Lotus Notes or Outlook).
CallWD: Function specific to the external language
Calls a WLanguage function from an external language....