ONLINE HELP
 WINDEV, WEBDEV AND WINDEV MOBILE

Version: 2025
<Menu>.Exist (Function)
Indicates whether a menu option exists in a menu.
<Page>.Exist (Function)
Allows you to find out whether a page context exists on the server (which means whether the page was opened).
Exist (Property)
The Exist property determines if the element of an associative array exists.
Exist (Property)
The Exist property is used to determine if an element exists.
<Chart>.Exist (Function)
Checks the existence of a chart in memory.
TestWriteResult (Function)
Writes information or an error into the status report of a unit test, in the test editor.
Compilation statement: COMPILE IF
The <COMPILE IF> statement allows you to compile (or not) a WLanguage code according to a condition.
dbgWriteCommentAudit (Function)
Writes a comment into the current dynamic audit.
HLinkMemo (Example)
Usage example of the HLinkMemo function
BTLEGetAService (Function)
Retrieves the service of a Bluetooth Low Energy device corresponding to the specified identifier (UUID).
BTLEGetACharacteristic (Function)
Retrieves the characteristic of a Bluetooth Low Energy service corresponding to the specified identifier (UUID).
<btleDevice variable>.GetAService (Function)
Retrieves the service of a Bluetooth Low Energy device corresponding to the specified identifier (UUID).
<btleService variable>.GetACharacteristic (Function)
Retrieves the characteristic of a Bluetooth Low Energy service corresponding to the specified identifier (UUID).
fFileExist (Function)
Checks the existence of an external file.
General exception mechanism
A process of general exception is available for all the components of the object with which it is associated...
<zipArchive variable>.Exist (Function)
Determines whether an archive exists.
Count (Function)
Returns the number of occurrences of a control in a window, in a page or in a group of controls.
Accessing a database in local mode (SQLite)
WEBDEV allows a site to create and access a database created by the browser on the computer of the Web user in browser code.
<TreeView Table>.ItemStatus (Function)
Returns the state of a node in a TreeView Table control: rolled up, unrolled or non-existent.
TableItemStatus (Function)
Returns the state of a node in a TreeView Table control: rolled up, unrolled or non-existent.
fDirectoryExist (Function)
Checks the existence of a directory.
ImageInfoModify (Function)
Modifies the value of an Exif tag for the image used.
InfoThumbnailGeneration (Property)
The InfoThumbnailGeneration property is used to determine if the thumbnails of an item have been generated successfully.
<Window>.ToFile (Function)
Automatically updates:
  • the values of a data file's items in memory with the values from the controls in the window. The data file items bound to the window controls are automatically updated with the values of these controls.
  • the value of the WLanguage variables with the value of the window controls. The WLanguage variables bound to the window controls are automatically updated with the values of these controls.
This function is also available for WEBDEV pages.
<Window>.ToSource (Function)
Automatically initializes:
  • the values of a data file's items in memory with the values from the controls in the window.
  • the value of the WLanguage variables with the value of the window controls.
This function is also available for WEBDEV pages.
ScreenToSource (Function)
Automatically initializes:
  • the values of a data file's items in memory with the values from the controls in the window.
  • the value of the WLanguage variables with the value of the window controls.
This function is also available for WEBDEV pages.
<Spreadsheet>.Save (Function)
Saves the content of a Spreadsheet control in a file in XLSX format.
SpreadsheetSave (Function)
Saves the content of a Spreadsheet control in a file in XLSX format.
fMakeDir (Function)
Creates a directory (and the intermediate directories if necessary).
ScreenToFile (Function)
Automatically updates:
  • the values of a data file's items in memory with the values from the controls in the window.
  • the value of the WLanguage variables with the value of the window controls.
This function is also available for WEBDEV pages.
<Page>.ToSource (Function)
Automatically initializes:
  • the value of the items in a data file with the value of the controls in the page.
  • the value of the WLanguage variables with the value of the page controls.
PageToSource (Function)
Automatically updates:
  • the value of the items in a data file with the value of the controls in the page.
  • the value of the WLanguage variables with the value of the page controls.
<Source>.FromPage (Function)
Automatically updates:
  • the value of the items in a data file with the value of the controls in the page.
  • the value of the WLanguage variables with the value of the page controls.
SourceFromWindow (Function)
Automatically initializes:
  • the values of a data file's items in memory with the values from the controls in the window.
  • the value of the WLanguage variables with the value of the window controls.
This function is also available for WEBDEV pages.
<Source>.FromWindow (Function)
Automatically initializes:
  • the values of a data file's items in memory with the values from the controls in the window.
  • the value of the WLanguage variables with the value of the window controls.
This function is also available for WEBDEV pages.
PageToFile (Function)
Automatically updates:
  • the value of the items in a data file with the value of the controls in the page. The data file items bound to the window controls are automatically updated with the values of these controls.
  • the value of the WLanguage variables with the value of the window controls. The WLanguage variables bound to the page controls are automatically updated with the values of these controls.
This operation is performed regardless of the state of the controls (grayed, inactive or invisible).
<Page>.ToFile (Function)
Automatically initializes:
  • the value of the items in a data file with the value of the controls in the page. The data file items bound to the window controls are automatically updated with the values of these controls.
  • the value of the WLanguage variables with the value of the window controls. The WLanguage variables bound to the page controls are automatically updated with the values of these controls.
This operation is performed regardless of the state of the controls (grayed, inactive or invisible).
<xmlDocument variable>.Save (Function)
Saves an XML document in a file.
TableCollapseExpand (Function)
Collapses or expands an element in a Table or TreeView Table control.
XMLSave (Function)
Saves an XML document in a file.
UploadFileName (Function)
Returns the name of a file "uploaded" by the Web user. This file must have been uploaded:
  • via an "Upload" edit control.
  • via a single-file or multi-file Upload field.
HImportXLS (Function)
Imports an XLS file into an HFSQL Classic or Client/Server data file. This data file must have been defined in the data model editor, or declared with HDeclare, HDeclareExternal or HDescribeFile).
SourceFromPage (Function)
Automatically updates:
  • the value of the items in a data file with the value of the controls in the page.
  • the value of the WLanguage variables with the value of the page controls.
Error (Function)
Displays a custom error message in a system error window.
EmailReadLast (Function)
Reads the last incoming email according to the protocol used (POP3 or IMAP, MS Exchange, Lotus Notes or Outlook).
<Table>.CollapseExpand (Function)
Collapses or expands an element in a Table or TreeView Table control.
HImportXML (Function)
Imports an XML file into an HFSQL Classic or Client/Server data file. This data file must have been defined in the data model editor, or declared with HDeclare, HDeclareExternal or HDescribeFile).
<Source>.ImportXML (Function)
Imports an XML file into an HFSQL Classic or Client/Server data file. This data file must have been defined in the data model editor, or declared with HDeclare, HDeclareExternal or HDescribeFile).
Associative array (Variable type)
An associative array is an "advanced" type of array...
ErrorBuild (Function)
Displays a custom error message in a system error window.
appServerScheduledTask (Variable type)
The appServerScheduledTask type is used to manage a scheduled task of WEBDEV Application Server through programming (for a site or a web service).
EmailReadMessage (Example)
Usage example of the EmailReadMessage function
HSynchronizeReplica (Example)
Usage example of the HSynchronizeReplica function
Project description: Compilation tab
The project description window allows you to configure various elements of your project...
Internal procedure
Several features require a procedure called once or several times via a WLanguage function ("Callback").
docStyle (Variable type)
The docStyle type is used to define the advanced characteristics of a style belonging to a document, a paragraph or a document fragment.
HTMLControlValue (Function)
Used to identify or modify a control in an HTML form contained in an HTML Display control.
<HTML Display control>.ControlValue (Function)
Used to identify or modify a control in an HTML form contained in an HTML Display control.
LDAPAddAttribute (Function)
Adds an attribute or adds a new value to an existing attribute.
Declaring and using a variable
A variable is defined by name and type...
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