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...
Customizing the WINDEV User Groupware
The User Groupware in automatic mode offers many possibilities......
BTIsVisible (Function)
Used to find out whether a Bluetooth radio is visible.
OrganizerChangeMode (Function)
Modifies the time range displayed by an Organizer control (Day/Week/Month)....
SchedulerAddAppointment (Function)
Adds a new appointment into a Scheduler control.
fRemoveDir (Function)
Deletes a directory from a disk.
Left (Function)
Extracts the left part (i.e., the first characters) from a string or buffer.
ContactReset (Function)
Reinitializes: the Contact structure. a Contact variable....
HCreateView (Example)
Usage example of the HCreateView function
HErrorPassword (Function)
After the execution of a read or write function in a data file, used to find out whether an error caused by a wrong password occurred on this data file.
Report with parameters
When printing a report, you have the ability to pass parameters to this report......
hScheduling (Type of variable)
The hScheduling type is used to define and find out the characteristics of the scheduling that must be performed: for a scheduled optimization task of HFSQL Client/Server files. for a scheduled backup task of HFSQL Client/Server files. for a scheduled replication of HFSQL servers....
The Scheduler control
...The Scheduler control is used to automatically display and handle schedules. It is used to manage the display of multiple resources and it is used in several applications or sites....
Provider (Property)
The Provider property is used to manage the type of a connection (HFSQL Client/Server, OLE DB, etc.)....
Image control in a page
sRead (Function)
Reads a character string in the entry buffer of the specified serial port.
Adapting a project to use the skins
An existing project (developed with an earlier WEBDEV version for example) can be easily adapted to use the skin elements......
Compression (Property)
The Compression property is used to manage data compression during a connection (HFSQL Client/Server, etc.)...
Library,Disk (External language)
Opens the project library that is stored on disk.
EvaluateExpression (Function)
Evaluates the value of an expression built in a character string.
ExecuteCode (Function)
Runs the WLanguage code found in a character string.
2. WINDEV, WEBDEV and WINDEV Mobile: fully compatible format
New projects are often cross-platform....
Component (Property)
The Component property configures the different components of a composite key.
MemCreate (Function)
Creates a memory area.
Access (Property)
The Access property is used to manage the type of access of a connection (HFSQL Client/Server, OLE DB, etc.)....
fOpen (Function)
Opens an external file (ANSI or UNICODE) in order to handle it through programming.