ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

Create an insert query
An insert query (corresponding SQL statement...
Creating a combining query
A combining query (corresponding SQL statement: UNION) ...
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...
Selection conditions of a query
The selection conditions of records are applied to the items used in the queries...
HSuggestKey (Function)
Returns a list of keys to add to data files to improve query performance.
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...
HSuggestKeyStart (Function)
Starts collecting information on executed queries.
HSuggestKeyEnd (Function)
Finishes collecting information on executed queries.
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...
Example for creating a select query
This help page explains how to create two select 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...
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...
Query creation mode: independent or embedded query
The query editor proposes two methods for creating a query...
Describing a query
Once a query is created, all the characteristics of this query can be modified at any time...
Project comparator
Comparing two windows (two pages, two reports, two classes, ...
Test of a query
The query editor allows you to run the test of query result...
Operations in a Select query
The query editor allows you to perform operations on the values of an item...
fUncompress (Function)
Decompresses a file that was compressed by fCompress.
EmailReadPrevious (Function)
Reads the email found before the current email according to the protocol used (POP3 or IMAP, MS Exchange, Lotus Notes or Outlook).
Warning (Function)
Displays a custom message in a system warning window.
ChronoValue (Function)
Indicates the time elapsed (in milliseconds) since the call to ChronoStart.
2. Performance profiler
WINDEV Tutorial: Optimizing a project Lesson 2 - Performance profiler - 15 min
SchedulerAddResource (Function)
Adds a new resource into a Scheduler control.
fCompress (Example)
Usage example of the fCompress function
fListFile (Example)
Usage example of the fListFile function
WDLog: Viewing a log file
WDLog is used to view the content of a log file......
Repetition (Type of variable)
The Repetition type is used to describe and modify the characteristics of a repetition for an appointment via the different WLanguage properties.
ShortcutKey (Property)
The ShortcutKey property gets and sets the keyboard shortcut associated with a control.
WinEdSelectOccurrence (Function)
Indicates the number of controls selected when the interface is modified by the end user ("Allow end users to modify the UI" option enabled).
Movable (Property)
The Movable property is used to: Find out whether a table column can be moved by the user, Allow and/or forbid a table column to be moved by the user....
KeyExpression (Property)
The KeyExpression property is used to set the different components of a composite key.
HugeFile (Property)
The HugeFile property is used to configure the maximum size of a data file.
The Flash control
The Flash control is used to display a Flash® animation in a WEBDEV page......
Handling an ActiveX by programming
WINDEV allows you to handle an ActiveX control in WLanguage via......
WinAnimationOpening (Function)
Modifies the type and duration of animations used when opening the application windows.
SchedulerChangeMode (Function)
Modifies the period (which means the number of days) displayed by a Scheduler control.
SelectColor (Function)
Opens the standard window for color selection and selects the specified color.
fDriveInfo (Function)
Returns information about a drive.
HCloseAnalysis (Function)
Closes the current analysis.
EmailCloseSession (Example)
Usage example of the EmailCloseSession function
HCancelDeclaration (Example)
Usage example of the HCancelDeclaration function
HDeclareExternal (Example)
Usage example of the HDeclareExternal function