ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

MaxThumbnailHeight (Property)
The MaxThumbnailHeight property is used to get and change the maximum height of a thumbnail of an Image item (binary memo).
HDeleteLink (Function)
Deletes an integrity rule between two data files on the server.
Generating a description of a data file from a window or from a page
When you design a quick prototype, you often create windows (or pages) without defining any data files......
FilterWithBounds (Property)
The FilterWithBounds property is used to determine if bounds have been specified for the filter implemented by HFilter on an HFSQL data file, view or query.
Operations performed on a data file (Data model editor)
The main operations that can be performed on a data file from the data model editor are as follows......
<Connection variable>.DeleteFile (Function)
Deletes the HFSQL data files (.fic, .ndx, .ftx and .mmo files if they exist) from the server.
Key and referential integrity
In an analysis, the "Key" items are also used to manage the consistency of data (called referential integrity)......
Filtering a data file, a view or a query
A filter is used to define by programming a selection of records corresponding to one or more criteria......
HDeleteFile (Function)
Deletes the HFSQL data files (.fic, .ndx, .ftx and .mmo files if they exist) from the server.
<Source>.DeclareExternal (Function)
Temporarily imports into the current analysis the description of a data file from an existing HFSQL data file.
HAddLink (Function)
Adds an integrity rule between two data files on the server.
HImportJSON (Function)
Imports a JSON file into a data file in HFSQL Classic format (data file described in the data model editor or declared by HDeclare, HDeclareExternal or HDescribeFile).
<Source>.ImportJSON (Function)
Imports a JSON file into a data file in HFSQL Classic format (data file described in the data model editor or declared by HDeclare, HDeclareExternal or HDescribeFile).
<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.
InfoThumbnailGeneration (Property)
The InfoThumbnailGeneration property is used to determine if the thumbnails of an item have been generated successfully.
<Source>.LockFile (Function)
Locks a data file and restricts the access to this data file for all other sites or applications.
Source (Property)
The Source property can be used on: a Chart control: in this case, the Source property is used to get the source of the series: Table column, list of values, ... a connection: in this case, the Source property is used to get or set the source of a connection (HFSQL Client/Server, OLE DB, etc.)....
REP files
REP files contain the list of data files handled by the application....
Managing the HDFS system
HDFS (Hadoop Distributed File System) is one of the component of the Hadoop framework......
Control Centers: Working in offline mode
When working on a laptop computer or on an offline computer, you may want to continue working with the data found in the Control Centers (schedule management, quality management, etc....
How to populate a TreeView control using a data file?
By default, the TreeView control cannot automatically display the data coming from a data file......
7. HFSQL: files physically created
Filtering the headers and the content of a Pivot Table
By default, the entire data found in the data files is taken into account when calculating the content of a Pivot Table control......
HSuggestKey (Function)
Returns a list of keys to add to data files to improve query performance.
FTPDate (Function)
Returns the different dates of a file (date the file was created, modified or accessed) located on an FTP server (File Transfer Protocol).