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...
List,Get (External language)
Retrieves the value of a given element or the value of the selected element in a drop-down list or in an expanded list.
How to include secure payment in a WEBDEV site?
This help page explains how to add a secure payment into a WEBDEV site......
SessionHeartBeatEnable (Function)
Enables or disables the "heartbeat" of the current session.
Animating a Static control
Two methods can be used to animate a Static control......
dSaveImagePNG (Function)
Saves an image: in a PNG file. in memory....
dSaveImageGIF (Function)
Saves an image: in a file in GIF format. in memory....
dSaveImageBMP (Function)
Saves an image: in a file in BMP format. in memory....
eChangeCurrency (Function)
Converts a currency into another currency.
eToCurrency (Function)
Converts a value expressed in Euro into another currency.
eToEuro (Function)
Converts to Euro a value expressed in a specific currency.
HForward (Function)
Moves several records forward from the current position in the data file, according to a specified item.
HOnError (Function)
Customizes the management of HFSQL errors.
Tab order in a window, a page, etc.
The tab order of the controls found in a window or in a page describes the order in which the controls take focus in a window when the user presses the [Tabulation] key......
WDAdminHF: Saving the databases
The remote HFSQL administrator allows you to create backups of HFSQL Client/Server data files......
TABOrder (Property)
The TABOrder property gets and sets the position of a control in the tab order of a window.
TableAddTitleHeader (Function)
Adds a column title-header into a Table or TreeView Table control in a window.
Importing DreamWeaver elements into a WEBDEV site
WEBDEV allows you to import Dreamweaver elements into your WEBDEV site......
Creating help pages
A help system includes several pages......
Trace (Function)
Displays the requested information (content of a control, for example) in a window opened next to the current window.
Choosing the type of image: dynamic, static, generated, ...
The images are often used to illustrate the site pages......
Transactions: Secure processes on HFSQL data files
This chapter presents the following topics......
Native xBase/FoxPro Access: Specific features and remarks
This help page presents the specific features regarding the programming of Native xBase/FoxPro Access......
The Layout control
The Layout control simplifies the implementation of dynamic UIs where controls are displayed and/or hidden programmatically......
Automatic data file modification
The automatic data file modification updates the description of data files on user computers......
Creating the Vision windows of the WINDEV RAD pattern