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...
EvaluateExpression (Function)
Evaluates the value of an expression built in a character string.
ContactReset (Function)
Reinitializes: the Contact structure. a Contact variable....
HCreateView (Example)
Usage example of the HCreateView function
HErrorPassword (Function)
After the execution of a read or write function in a data file, used to find out whether an error caused by a wrong password occurred on this data file.
The Scheduler control
...The Scheduler control is used to automatically display and handle schedules. It is used to manage the display of multiple resources and it is used in several applications or sites....
hScheduling (Type of variable)
The hScheduling type is used to define and find out the characteristics of the scheduling that must be performed: for a scheduled optimization task of HFSQL Client/Server files. for a scheduled backup task of HFSQL Client/Server files. for a scheduled replication of HFSQL servers....
Customizing the WINDEV User Groupware
The User Groupware in automatic mode offers many possibilities......
Image control in a page
sRead (Function)
Reads a character string in the entry buffer of the specified serial port.
Adapting a project to use the skins
An existing project (developed with an earlier WEBDEV version for example) can be easily adapted to use the skin elements......
Compression (Property)
The Compression property is used to manage data compression during a connection (HFSQL Client/Server, etc.)...
Library,Disk (External language)
Opens the project library that is stored on disk.
Left (Function)
Extracts the left part (i.e., the first characters) from a string or buffer.
ExecuteCode (Function)
Runs the WLanguage code found in a character string.
2. WINDEV, WEBDEV and WINDEV Mobile: fully compatible format
New projects are often cross-platform....
Component (Property)
The Component property configures the different components of a composite key.
MemCreate (Function)
Creates a memory area.
Access (Property)
The Access property is used to manage the type of access of a connection (HFSQL Client/Server, OLE DB, etc.)....
fOpen (Function)
Opens an external file (ANSI or UNICODE) in order to handle it through programming.
Starting WDOptimizer in a command line
Validity period of site pages
When creating a page, a validity period can be defined for this page......
Events associated with the Map control
WINDEV, WINDEV Mobile and WEBDEV manage the following events by default (order of appearance in the code editor)...
Android application: Using and sharing SQLite data
For the Android applications, the available databases are HFSQL (Classic and Client/Server) and SQLite....
Display modes of Tab control
To optimize the style of your tabs, you have the ability to use images and colors......
Creating a skin template from an existing skin template
You can create a skin template from an existing skin template (provided by PC SOFT, for example)......