ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Creating a delete query
A delete query (corresponding SQL statement...
HSuggestKey (Function)
Returns a list of keys to add to data files to improve query performance.
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...
HSuggestKeyEnd (Function)
Finishes collecting information on executed queries.
Project comparator
Comparing two windows (two pages, two reports, two classes, ...
Creating a query
Two methods can be used to create a query...
Items used in a select query
A query created in the query editor can contain several types of items...
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...
Handling the versions of a window, report, query or project
When creating and developing the different elements of a project (window, query, report, project, ...
Create an insert query
An insert query (corresponding SQL statement...
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...
Joins between the data files of a select query
When several data files are used in a query, the query editor automatically searches for the links between these files defined in the analysis...
Code history
The code history is used to...
Environment of the query editor
Creating a select query
A select query (corresponding SQL statement...
Query creation mode: independent or embedded query
The query editor proposes two methods for creating a query...
HSuggestKeyStart (Function)
Starts collecting information on executed queries.
Describing a query
Once a query is created, all the characteristics of this query can be modified at any time...
Optimizing the query execution
The query editor allows you to optimize the execution speed of one or more queries...
Select query description window
The description window of a select query includes several sections...
Creating a combining query
A combining query (corresponding SQL statement: UNION) ...
Example for creating a select query
This help page explains how to create two select queries...
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...
Test of a query
The query editor allows you to run the test of query result...
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.
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...
Creating an update query
An Update query (SQL UPDATE statement) is used to modify the records in a database file...
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...
TableMode (Function)
TableMode is kept for backward compatibility.
Constants for managing Windows events
The following constants are used to manage Windows events:...
sysNotificationInput (Type of variable)
The sysNotificationInput type is used to define all the advanced features of an input control, such as a text input or combo box control, in an interactive notification.
WinAdaptSize (Function)
Adapts the window size to the content of controls.
Password (Property)
The Password property sets and changes the password.
Automatic feature for copying forms
When typing several copies of a form one after another, some of the information to type may be the same for each instance of the form......
Message text file format
The text files created by WDMSG use a specific format......
Interactive notification management constants
Interactive notification management constants...
LooperAddIP (Function)
Adds a row as an internal page at the end of a Looper control populated programmatically.
Handling Gantt Chart controls programmatically
Using an external component in an application
A component can be reused at any time in any application......
I was using C with WINDEV 5.5. How to proceed in WINDEV 2024?
You have the ability to use external languages with WINDEV......
Managing the HDFS system
HDFS (Hadoop Distributed File System) is one of the component of the Hadoop framework......
4. Conditional statements
WINDEV Tutorial - WLanguage basics Lesson 4 - Conditional statements - 20 min
User login: User Groupware
WEBDEV Tutorial - User Groupware User login: User Groupware - 20 min
TableInsertLineWithAnimation (Function)
Inserts a row into a Table control or into a TreeView Table control with an animation.
Duration (Type of variable)
The Duration type enables you to easily handle the intervals of dates and times...
Associating documents with the project
To describe a project in detail, you can associate documents with it......
TableInsert (Function)
Inserts a row into: a Table control, a TreeView Table control, a table displayed in a Combo Box control....
URL Rewriting
URL Rewriting is a technique used to improve SEO......
Type of windows created by RAD
The wizard for window creation proposes several types of windows associated with HFSQL data files......
Using objects
To access a class, the object must be declared as being part of the class to handle, this is called object instantiation......
LooperAddIW (Function)
Adds a row as an internal window at the end of a Looper control populated programmatically.
DateValid (Function)
Checks the validity of a date between January 01 0001 and December 31 9999.
ListDeleteAll (Function)
Clears a List Box, ListView or Combo Box control populated programmatically.