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...
Using the Google Maps service
The Google Maps service is an Internet mapping software proposed by Google......
Simplify your searches
Images and buttons
WINDEV, WEBDEV and WINDEV Mobile include many features to improve the appearance of applications and sites......
WDBal messaging: Writing a message
WDBal, the secure messaging provided with WINDEV, WEBDEV and WINDEV Mobile, allows you to easily write a message......
Detection (Property)
The Detection property is used to determine and change the automatic detection of incoming streams. If the stream detection is enabled, the streams allows the detection.
InputType (Property)
The InputType property is used to identify or change the type of input supported by a control: Duration, Date, Numeric, etc.
WEBDEV license agreement
WEBDEV license agreement...
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.
gClickableLink (Function)
Adds a clickable link in a graphic string.
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....
fCurrentDir (Example)
Usage example of the fCurrentDir function
Opening a help file (CHM, HTML or PDF)
There are several ways to open a help file......
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).
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......
Characteristics of the Looper control in a page
To view the characteristics of the control, select "Description" in the context menu....