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...
Opening a help file (CHM, HTML or PDF)
There are several ways to open a help file......
Context menu of windows (AAF)
The popup menu of the windows (right mouse click on the window) contains the following options......
MatExist (Example)
Usage example of the MatExist function
MatNbColumn (Example)
Usage example of the MatNbColumn function
MatNbLine (Example)
Usage example of the MatNbLine function
ListSelectMinus (Function)
Deselects an element in a List Box, ListView or Combo Box control.
Using the Google Maps service
The Google Maps service is an Internet mapping software proposed by Google......
COMCallMethod (Function)
Runs a method of an interface of a COM object instantiated by COMCreateInstance.
Thread management constants
List of constants used by the functions for managing threads, critical sections, semaphores, mutexes, ......
HSeek (Function)
Positions on the first record of the data file whose value for a specific item is greater than or equal to a sought value (generic search by default).
HTransactionCancel (Function)
If a transaction is in progress, cancels all the operations performed on the data files in transaction since the start of transaction.
Constants for managing projects
List of constants used by the functions for managing projects....
WEBDEV license agreement
WEBDEV license agreement...
fCurrentDir (Example)
Usage example of the fCurrentDir function
Modified (Property)
The Modified property is used to determine if a control or group of controls has been modified by the user (keyboard or mouse input).
Characteristics of the Looper control in a page
To view the characteristics of the control, select "Description" in the context menu....
MatCreate (Example)
Usage example of the MatCreate function
MatStack (Example)
Usage example of the MatStack function
Range Area chart
The Range Area chart is used to show a variation between a high and a low value......
How to develop a PHP site?
What is a PHP site?......
Installing and configuring HFSQL Cluster
Required configuration and overview for installing HFSQL Cluster....
HTML Display control processes
WINDEV and WINDEV Mobile include different WLanguage events associated with HTML Display Controls......
Handling Button controls programmatically
WINDEV, WINDEV Mobile and WEBDEV allow you to programmatically handle Button controls......
TileDeleteAll (Function)
Deletes all modifications made to the application tile.
MatDelete (Example)
Usage example of the MatDelete function