ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

Optimizing the query execution
The query editor allows you to optimize the execution speed of one or more queries...
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...
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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, ...
Creating an insert query
An insert query (corresponding SQL statement...
Creating a query
Two methods can be used to create a query...
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...
Page in Session mode: Populating controls after a long process
In a web application, you may need to run long processes (for example, to update counters......
TableModifyColumn (Function)
Modifies a column in a horizontal Table control.
Process (Property)
The Process property is used to modify the processes to be executed by the events available on a control, window, page, report, etc.
PDF Reader control events
InitialContent (Property)
The InitialContent property gets the initial content: of a List Box control populated programmatically. of a Combo Box control populated programmatically. of a "List of values" column in a Table control. in a Spreadsheet control....
PunctuationSensitive (Property)
The PunctuationSensitive property is used to determine if punctuation characters (comma, period, etc.) are taken into account in the different searches performed on the item (with HReadSeek, HReadSeekFirst and HReadSeekLast, for example).
InitWindow (Function)
Initializes (or not) the controls to zero and runs the initialization processes of the controls and the window.
grDestinationControl (Function)
Defines an Image control as destination of a chart.
How to avoid displaying the URL of WEBDEV pages in the browser?
By default, when the user connects to a site developed with WEBDEV, the address bar of the browser contains an address in the following format......
Server (Property)
The Server property is used to manage the data source of a connection (HFSQL Client/Server, OLE DB, etc.)....
Types of charts available
WINDEV, WEBDEV and WINDEV Mobile propose different types of charts......
Preset page templates
The preset page templates provide some structures of pages corresponding to a wide range of sites and they also improve the reusability and the graphic harmony between the projects......
PageToSource (Function)
Automatically updates: the value of the items in a table with the value of the controls in the page. the value of the WLanguage variables with the value of the page controls....
Non-maximized windows in iOS
A non-maximized window can occupy a section of the screen only......
zipExtractFileList (Function)
Extracts and decompresses a list of files found in an archive to a physical location.
FTPSend (Function)
Transfers a file or directory to an FTP server (File Transfer Protocol).
EmailDeleteMessage (Function)
Deletes the current email using the current protocol (POP3, IMAP, MS Exchange, Lotus Notes or Outlook).
HRead (Function)
Reads a record in a file according to a given record number.
HTransactionStart (Function)
Starts a transaction on the tables (HFSQL or accessed via a Native Connector) and creates the transaction table.
fWriteLine (Function)
Writes a line to a text file (ANSI or Unicode).
UI compilation errors
UI compilation errors indicate the possible problems detected in your interfaces whenever a window, a page or a report is saved or whenever the project is recompiled......