ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

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...
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, ...
Optimizing the query execution
The query editor allows you to optimize the execution speed of one or more queries...
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...
Creating an insert query
An insert query (corresponding SQL statement...
MatFloatAdd (Example)
Usage example of the MatFloatAdd function
fDriveInfo (Example)
Usage example of the fDriveInfo function
MatRead (Example)
Usage example of the MatRead function
MatTranspose (Example)
Usage example of the MatTranspose function
Calendar functions
List of Calendar functions...
URLDecode (Function)
Decodes an encoded URL (which means with characters in %xx format).
CalendarPicker (Function)
Opens a modal dialog with a calendar to enter a date.
MatFloatMultiply (Example)
Usage example of the MatFloatMultiply function
MatCopy (Example)
Usage example of the MatCopy function
Handling a Looper control through programming
WINDEV, WINDEV Mobile and WEBDEV allow you to handle a Looper control by programming......
BackgroundImage (Property)
The BackgroundImage property gets and sets the background image of an element.
HFSQL server configuration
The HFSQL Control Center allows you to fully manage HFSQL servers......
dSaveImageJPEG (Function)
Saves an image: in a JPEG file. in memory....
Thread management constants
List of constants used by the functions for managing threads, critical sections, semaphores, mutexes, ......
WinEdRestore (Function)
Undoes all the changes made by the end user ("Allow end users to modify the UI" option enabled).
MatWrite (Example)
Usage example of the MatWrite function
DateTimeToString (Function)
Converts a DateTime to string in the specified format.
MatDeterminant (Example)
Usage example of the MatDeterminant function
zipCreate (Example)
Usage example of the zipCreate function