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...
HChangeDir (Function)
Changes the path to a data file (i.e. directory in which the file will be handled).
RETURN statement
The RETURN statement is used to exit the current event, process or procedure and return a result...
DeleteParameter (Function)
Deletes a parameter (or a set of parameters) saved either by SaveParameter, or automatically via the persistence of data in the controls.
Declaring and using a variable
A variable is defined by name and type......
The Progress Bar control
The Progress Bar control is used to follow the progress of an event......
HClose (Function)
Closes a data file or all the data files opened by the current user: all the corresponding physical data files are closed for the current user.
Creating and distributing Active WEBDEV Pages
To transform a page in Session mode into an Active WEBDEV Page:...
Operations performed on state-transition diagrams
The following paragraphs explain......
2. Creating files in the analysis
WINDEV Tutorial: Creating a WINDEV project and its analysis Lesson 2 - Creating files in the analysis - 40 min
The Dashboard control
Dashboards are essential elements in an application......
The "dynamic" Tab control
The "Dynamic tab" Tab control is used to display several windows in the same window......
TableDisplay (Function)
Refreshes a Table or TeeeView Table control from a given position: for a control linked to a file: changes made in the linked data file are reflected in the control. for a control handled programmatically: the calculated columns are re-calculated....
The Gantt Chart control
A Gantt chart allows you to graphically view the progress status of a project......
Responsive Web Design: Managing a header bar
This help page explains how to create a page containing a header bar in Responsive Web Design mode......
ScreenToSource (Function)
Automatically initializes: the values of a data file's items in memory with the values from the controls in the window. the value of the WLanguage variables with the value of the window controls. This function is also available for WEBDEV pages....
PageToSource (Function)
Automatically updates: the value of the items in a data file with the value of the controls in the page. the value of the WLanguage variables with the value of the page controls....
SourceFromPage (Function)
Automatically updates: the value of the items in a data file with the value of the controls in the page. the value of the WLanguage variables with the value of the page controls....
WDMap: Overview
WDMap is a tool used to view and handle a data file while developing an application......
IFrame control
IFrame is an HTML concept......
HReadPrevious (Function)
Sets the position on the previous record of a file according to a browse item.
PostMessage (Function)
Sends a Windows message to a control or to a window.
XInitial (Property)
The XInitial property is used to: Get the X-coordinate: of a control (position on the X-axis) when opening the window or the page. of a window (position on X-axis) when opening the window. Change the X-coordinate of a control anchored "to the right" (position on the X-axis) when opening the window. Get the X-coordinate of a control in relation to its block (position in millimeters on the X-axis) when opening the report....
Manipulating WEBDEV menu options
The context menu of menu options allows you to perform all the operations required to define a drop-down menu......
Using data from an external database
WINDEV Tutorial - External database Using data from an external database - 40 min
Window for quick selection
You are searching for a project element? You only know part of its name? Press [CTRL]+[E] to open the quick selection window......