ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Time management
For each element (windows, reports, ...
Principle of remote check
Handling the versions of a window, report, query or project
When creating and developing the different elements of a project (window, query, report, project, ...
WINDEV and the communication streams (audio, sound)
To handle the communication streams, WINDEV includes...
Null (Reserved word)
The Null keyword can be used according to different methods in WLanguage...
3-tier architecture
The development in "3-tier" architecture is now simplified...
HSeek (Function)
Positions on the first record of the data file whose value for a specific item is greater...
EmailSend (Function)
Sends an email via the SMTP protocol while controlling the "buffer" of the email.
EmailSetTimeOut (Function)
Changes the value of the "timeout" for connecting to the SMTP, POP3 and IMAP messaging servers.
HChangeRplDir (Function)
Modifies the location for the description of subscriber replica (RPL file).
Constants for managing errors and exceptions
List of constants used by the functions for managing errors and exceptions....
HListProvider (Function)
Returns the list of OLE DB providers and/or Native Connectors installed on the current computer....
HMode (Function)
Changes the mode and the method for locking data files.
Easter (Function)
Returns the date of Easter for the specified year according to the western Christian calendar.
DateTimeLocalToUTC (Function)
Converts a local date and time (time zone, summer time, winter time) to UTC.
DateTimeUTCToLocal (Function)
Converts a UTC date and time to local time (time zone, summer time, winter time).
grSourceCategoryLabel (Function)
Defines the source of the category labels.
grSourceSeries (Function)
Defines the source of a series.
grAutoRefreshSeries (Function)
Identifies or defines whether a series is refreshed whenever the chart is drawn.
<Diagram editor>.StartModification (Function)
Indicates the start of a series of actions performed in a Diagram Editor control in a single event...
<Diagram editor>.EndModification (Function)
Indicates the end of a series of actions performed in a Diagram Editor control in a single event...
HTMLToPDF (Function)
Converts an HTML string or buffer to a buffer containing a PDF document.
<Diagram variable>.Load (Function)
Loads a diagram into a Diagram variable from a ".wddiag" file, a memo or a binary buffer.
<Component>.Execute (Function)
Executes a global procedure present in an external component. This external component is loaded...
iPrintDiagram (Function)
Prints a diagram from: a Diagram Editor control, a "wddiag" file, a Diagram variable....
gStoredValue (Function)
Adds an "invisible" value to an element in a List Box, Combo Box or Scheduler control.
SizeUnit (Property)
The SizeUnit property gets and sets the font size unit.
LineSpacing (Property)
The LineSpacing property gets and sets the line spacing for variables of type Font.
CharacterSpacing (Property)
The CharacterSpacing property gets and sets the spacing between characters.
<HFSQL file>.ExportJSONString (Function)
Exports the records from a data file (HFSQL or OLE DB), view or query to a JSON string.
HDeactivateAutoFilter (Function)
Disables an automatic filter on the linked files when browsing an XML file.