ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

The TreeView control
The TreeView control is a tree structure used to simplify the display of information that can be represented hierarchically......
HTriggerRecordBefore (Function)
Retrieves the value of the current record before the trigger(s) are executed.
LinkedFile (Property)
The LinkedFile property is used to set the characteristics of a link.
SourceFile (Property)
The SourceFile property is used to set the characteristics of a link.
Caption (Property)
In a database, the Caption property is used to: Find out the caption associated with a file item. Find out the caption associated with a data file. Find out and modify the connection caption. In a report, the Caption property is used to: Find out the text displayed in a Static or Link control. Modify the text displayed in a Static or Link control. In a window or page, the Caption property is also used to: Find out and modify the caption of a control in a window or in a page. Find out and modify the caption of a menu option. Find out and modify the title of a window or page. Find out the content of a Breadcrumb control....
MultiLinestring2D (Variable type)
The MultiLinestring2D type can be used to store a collection of linestrings defined with 2D coordinates.
HListParameter (Function)
Returns the list of parameters saved from the stored procedures on the server.
<Connection variable>.OpenConnection (Function)
Opens a connection to a specific database.
<Source>.Alias (Function)
Creates a logical alias of a data file (or query) or cancels all existing aliases.
<Source>.UnlockFile (Function)
Unlocks the records of a data file: locked by HLockFile. individually locked by a locking read function....
<Source>.UnlockRecNum (Function)
Unlocks a record locked by: HLockRecNum, a read function used with a locking parameter (HRead associated with the hLockWrite or hLockReadWrite constant for example)....
Link functions (prefix syntax)
Link functions are used to link the interface with the data files (and vice versa)....
<Source>.DescribeFile (Function)
Describes a data file programmatically.
<Source>.Close (Function)
Closes a data file or all the data files opened by the current user: all the corresponding physical data files are closed for the current user.
<Source>.SetDuplicates (Function)
Enables or disables the management of duplicates on a unique key.
<Source>.Open (Function)
Opens a data file.
HSetREP (Function)
Enables or disables the management of .REP file.
<Polygon2D variable>.IsValid (Function)
Checks whether the specified 2D polygon is valid according to the OGC rules.
HClose (Function)
Closes a data file or all the data files opened by the current user: all the corresponding physical data files are closed for the current user.
HSetDuplicates (Function)
Enables or disables the management of duplicates on a unique key.
HUnlockFile (Function)
Unlocks the records of a data file: locked by HLockFile. individually locked by a locking read function....
HUnlockRecNum (Function)
Unlocks a record locked by: HLockRecNum, a read function used with a locking parameter (HRead associated with the hLockWrite or hLockReadWrite constant for example)....
HBackward (Function)
Moves backward several records from the current position in the data file, according to a specified item.
HReadSeekLast (Function)
Sets the position on the last record whose value for a specific item is less than or equal to a sought value (exact-match search).
HOpenConnection (Function)
Opens a connection to a specific database.