ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

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...
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.
Creating an update query
An Update query (SQL UPDATE statement) is used to modify the records in a database file...
Creating a delete query
A delete query (corresponding SQL statement...
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...
Null (Reserved word)
The Null keyword can be used according to different methods in WLanguage......
PaneVisible (Property)
The PaneVisible property is used to: determine if the pane of the Image Editor control is visible, show or hide the pane of the Image Editor control....
Describing the replicated files (ReplicEdit)
A replication includes one or more data files......
OpenDocument (Function)
Opens a document in a new (modeless) window using the appropriate WINDEV editor (word processor, spreadsheet, PDF reader or image editor).
Manipulating Diagram Editor controls programmatically
In WINDEV and WEBDEV, you can handle Diagram Editor controls programmatically......
Sending faxes with WINDEV and WEBDEV
To send faxes from an application or from a site, WINDEV and WEBDEV propose several functions allowing you to send faxes via the system fax server available in Windows XP and Windows 2000......
WEBDEV Image Editor control: Features
The WEBDEV Image Editor control includes many features, accessible via several ribbons at the top and bottom of the control......
Handling menu options programmatically
The menu options can be handled......
PageBorderVisible (Property)
The PageBorderVisible property is used to: determine if the page borders are displayed in a Diagram Editor control. show or hide the page borders in a Diagram Editor control....
LibraryPanelVisible (Property)
The LibrayPanelVisible property is used to: determine if the "Library" panel is displayed in a Diagram Editor control. show or hide the "Library" panel in a Diagram Editor control....
ModifierPanelVisible (Property)
The ModifierPanelVisible property is used to: determine if the "Modifier" panel is displayed in a Diagram Editor control. show or hide the "Modifier" panel in a Diagram Editor control....
iPrintReport (Function)
Prints a report created with the report editor.
Binding a Repositionable Note control to an item
Transforming a WINDEV project into Mobile: a detailed audit
Transforming WINDEV applications into Mobile is very easy......
Library (Property)
The Library property allows you to handle the different preset libraries associated with a Diagram Editor control. This property accesses the array of libraries of the Diagram Editor control.
<Source>.ListItem (Function)
Returns the list of items in a data file (query or view) recognized by the HFSQL engine. The data files defined by HDeclare, HDeclareExternal and HDescribeFile are taken into account.
Clipboard with history
The clipboard stores the last 10 pieces of content cut or pasted (from any editor)......
The Image Editor control
The "Image Editor" control is a rich control that allows end users to create and edit images in their WINDEV applications......
7. Creating HFSQL files: files physically created
The data model editor allows you to define the structure of the data files....
General options of WINDEV, WEBDEV and WINDEV Mobile
The general options are used to configure the working environment of the product used......
Border of controls
One of the most important elements of control style is its border......
List Box control linked to a data file or to a query
A List Box or Combo Box control can be used to display the content of a data file or query, to allow a user to select a record, for example......
<Array>.DeleteAll (Function)
Deletes all elements: from a one-dimensional or two-dimensional WLanguage array. from an associative array. from the advanced array property (array of gglCalendar events, ...). from a WLanguage queue. from a WLanguage stack. from a WLanguage list....
The "Images" pane
The "Images" pane allows you to view and list all the images in the project directory and subdirectories......