ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Data Source (Variable type)
A Data Source variable is used to describe a temporary data source (query, view, alias, etc.).
MySource (Reserved word)
MySource is used to handle the current data source (file, view or query) associated with a report or with a table based on a data file...
HDataSourceKnown (Function)
Determines if a data source has been initialized.
SQLListSource (Function)
Lists the data sources declared on a local site.
<Source>.DataSourceKnown (Function)
Determines if a data source has been initialized.
<Input>.CalendarOpen (Function)
In a Date edit control, opens a popup window displaying a calendar.
<Date type>.ToWeekNumber (Function)
Returns the week number within the year that corresponds to the specified date.
<DateTime type>.ToReal (Function)
Converts a date and time to an 8-byte real.
PVTCompareDateRange (Function)
Calculates and displays a date range comparison in a Pivot Table control.
DateToWeekNumber (Function)
Returns the week number within the year that corresponds to the specified date.
DateTimeByDefault (Function)
Used to define the default value of Date, Time and DateTime variables.
tapiCallStart (Function)
Returns the date and time of the beginning of call (incoming or outgoing call).
StartDate (Property)
The StartDate property gets and sets the start date of a time period.
CalendarOpen (Function)
In a Date edit control, opens a popup window displaying a calendar.
EndDate (Property)
The EndDate property gets and sets the end date of a time period.
DateTimeToReal (Function)
Converts a date and time to an 8-byte real.
RealToDateTime (Function)
Converts an 8-byte real to a date and time.
HSetTransaction (Function)
Enables or disables the management of transactions for one or more files.
Managing HBase databases
HBase is a non-relational (NoSQL) distributed database, based on columns and using non-structured storage for large tables......
Refreshing a page
Refreshing a page consists in re-displaying a page that is already open in the browser......
NULL values in HFSQL
WINDEV, WEBDEV and WINDEV Mobile allow you to manage the NULL value in the items of HFSQL data files and for all the other types of accesses (Native, OLE DB, ......
Client/Server transactions: Available isolation modes
The HFSQL engine proposes to isolate the transactions......