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...
AnsiToUnicode (Function)
Converts: an ANSI string (Windows) to a UNICODE string. a buffer containing an ANSI string (Windows) to a buffer containing a UNICODE string....
IntegerToDate (Function)
Converts an integer into a date in YYYYMMDD format.
HSortView (Function)
Sorts an HFSQL view by creating an index on a view item. This function uses the former view mechanism.
fClose (Function)
Closes an external file.
Shape control properties
Shape controls in windows, pages and reports can be handled using different WLanguage properties......
Native xBase/FoxPro Connector
WINDEV and WEBDEV propose a Native xBase/FoxPro Connector (or Native xBase/FoxPro Access) module......
User Groupware (WINDEV and WEBDEV): Options and settings
An application is often intended to be used by several users connected via a network......
HCreationIfNotFound (Function)
Performs the following operations: If the file does not exist, creates an empty data file (".FIC" file) with the index file and the memo file if necessary. The function is equivalent to HCreation. If the file exists, opens the file....
Fixed array (Type of variable)
A fixed array is an "advanced" type of array...
The Upload control
The Upload control is used to upload files on the Web server......
Action Bar of a window
Action Bars replace the title bar of a window and display different types of information......
zipExtractDirectory (Function)
Automatically extracts and decompresses files from a directory in the file tree of an archive to a physical location.
TimeDifference (Function)
Calculates the difference between two times in hundredths of a second.
HFirst (Function)
Sets the position on the first record of a data file according to the specified browse item.
HLast (Function)
Sets the position on the last record of a data file according to a browse item.
OrganizerDeleteAppointment (Example)
Usage example of the OrganizerDeleteAppointment function
Creating the Table windows of the WINDEV RAD pattern
CertificateSignString (Function)
Creates the signature of a character string.
iRoundBorder (Function)
Prints a border with rounded outlines at specified coordinates.
The triggers
A trigger is a WLanguage procedure automatically called by the HFSQL engine whenever a modification is performed (addition, deletion, modification, ......
sfLeadConvert (Type of variable)
The sfLeadConvert type is used to describe the conversion parameters of a lead...
Defining specific character sets in HFSQL data files
When an application is used to display or save data in HFSQL files, this data is entered in the current language......
TableModifyColumn (Function)
Modifies a column in a horizontal Table control.
Process (Property)
The Process property is used to modify the processes to be executed by the events available on a control, window, page, report, etc.
PDF Reader control events