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...
HDescribeItem (Function)
Describes a file item through programming.
AuthIdentify (Function)
Performs an authentication using the OAuth 2.0 protocol on any webservice.
Working with the Source Code Manager
The principle for working with the Source Code Manager is as follows......
Automatic AJAX
The diagram below presents the automatic and immediate use of AJAX in a WEBDEV site......
HFSQL Client/Server database: Recommendations
This help page presents the main recommendations for optimizing the security and performance of an HFSQL Client/Server database according to the constraints and desired features......
Dashboard control: Automatic Application Features (AAF)
The Dashboard control proposes several Automatic Application Features (AAF) allowing the user to benefit from all control capabilities......
Creating an executable without library
When creating an executable, you can choose not to use a library or not to include all the elements of the project in the library......
Now (Function)
Returns or modifies the system time (current time defined for the current computer).
fLock (Function)
Entirely or partially locks an external file.
FTPConnect (Function)
Connects the current computer to an FTP server (File Transfer Protocol).
InternetConnected (Function)
Defines whether an Internet connection is enabled on the current computer. In mobile, you can also be notified when the status of the Internet connection changes.
Proxy (Function)
Specifies whether the communication functions that use HTTP or HTTPS must go through a proxy to execute their requests. A proxy is used to share the access to Internet between the different network computers.
ErrorBuild (Function)
Displays a custom error message in a system error window.
Link control properties
The Link control is available in a page and in a report......
ThreadSendSignal (Function)
The current thread sends a signal to the specified thread in order to unlock it.
Printing the content of a TreeView Table (AAF)
TreeView Table controls include an automatic context menu that allows users to perform multiple actions on the data displayed in the control......
OrgElement (Type of variable)
The OrgElement type is used to define the advanced characteristics of an element found in an Organization Chart control.
The Pivot Table control
The Pivot Table control dynamically displays data coming from the crosscheck of different files found in a database......
Using Objective C code
You can use Objective C code in iPhone/iPad applications generated with WINDEV Mobile....
10. Customizing the aspect of a site: skin elements
PageNumber (Property)
The PageNumber property is used to: get and change the number of the page displayed in an Image control ("multi-page" image files) get and change the page number of a PDF file displayed in an image control of a window get and change the page number of a PDF file displayed in the background of a report....
HConvertX (Function)
Converts a numeric value into a binary string in order to perform a search on a numeric key.
Automatic management of exceptions
The management of exceptions can be customized by process......
Creating a WINDEV project
A project is a logical set of elements and processes whose purpose is to accomplish a given objective......
Item Description (Type of variable)
An Item Description variable is used to describe one or more items in a data file programmatically.