ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

Creating a query
Two methods can be used to create a query...
Describing a query
Once a query is created, all the characteristics of this query can be modified at any time...
Example for creating a select query
This help page explains how to create two select queries...
Query creation mode: independent or embedded query
The query editor proposes two methods for creating a query...
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...
(No title )
Handling the versions of a window, report, query or project
When creating and developing the different elements of a project (window, query, report, project, ...
Operations in a Select query
The query editor allows you to perform operations on the values of an item...
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, ...
Optimizing the query execution
The query editor allows you to optimize the execution speed of one or more queries...
Creating an insert query
An insert query (corresponding SQL statement...
Creating a select query
A select query (corresponding SQL statement...
Test of a query
The query editor allows you to run the test of query result...
Creating a combining query
A combining query (corresponding SQL statement: UNION) ...
Selection conditions of a query
The selection conditions of records are applied to the items used in the queries...
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...
Environment of the query editor
When creating a class in the code editor, the Constructor and Destructor methods are automatically created by default...
Items used in a select query
A query created in the query editor can contain several types of items...
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...
fDateTime (Function)
Returns or modifies the different dates and times associated with a file or directory (date created, modified or accessed).
SocketWrite (Function)
Writes a message intended to another socket.
HState (Function)
Used to find out the state of a record.
fDate (Function)
Returns or modifies the different dates associated with a file or directory (date created, modified or accessed).
EmailReadLastHeader (Function)
Reads the header of the last Email received, depending on the protocol used (POP3 or IMAP, Lotus Notes or Outlook).
EmailReadFirstHeader (Function)
Reads the header of the first incoming email according to the protocol used (POP3 or IMAP, Lotus Notes or Outlook).
EmailReadPreviousHeader (Function)
Reads the header of the email found before the current email according to the protocol used (POP3 or IMAP, Lotus Notes or Outlook).
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).
fCreate (Function)
Creates an external file.
HSetReplication (Function)
Temporarily disables (or re-enables) the replication.
LooperMoveLine (Function)
Moves a row or swaps two rows in a Looper control.
AnimationSetMode (Function)
Changes the type of animation: for an image in an Image control. for a text in a static text control....
GetDefinition (Function)
Retrieves the element type definition.
fDataDir (Function)
Returns the full path of the directory of HFSQL tables specified by the user when installing the application.
NullAllowed (Property)
The NullAllowed property is used to manage the NULL value in the items of HFSQL data files.
Preset page templates
The preset page templates provide some structures of pages corresponding to a wide range of sites and they also improve the re-usability and the graphic harmony between the projects......
9. Hardware and software requirements
WDAPI: Converting a declaration of C function or structure
WDAPI is used to convert a declaration of C function or structure into a declaration of WLanguage function or structure......
CaseSensitive (Property)
The CaseSensitive property is used to determine if the different searches performed on the item distinguish between uppercase and lowercase characters (with HReadSeek, HReadSeekFirst and HReadSeekLast, for example).
Sorted (Property)
The Sorted property is used to: Determine whether a control is sorted. Sort a control or not....
TableInfoXY (Function)
Returns for a given position in a Table or TreeView Table control (coordinates of a control point): the name of the column displayed for the specified position. the index of the row or column for the specified position....
OpenPopup (Function)
Opens a popup window and waits for this window to be closed.
Native Access Connector
This type of Native Connector allows access to ACCESS databases for better interoperability purposes......
WDMap: Reindexing an HFSQL data file
WDMap is used to find out whether an HFSQL data file must be reindexed and reindex an HFSQL data file......