ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

NULL values in HFSQL
WINDEV, WEBDEV and WINDEV Mobile allow you to manage the NULL value in the items of the HFSQL data files and for all the other types of accesses (Native, OLE DB, ...
Max (Function)
Returns the greatest value passed as parameter.
<ANSI string>.ToNum (Function)
Returns the numeric value of a character string. This feature enables you to perform numeric calculations on strings.
<Source>.BuildKeyValue (Function)
Builds the value of a composite key to implement a filter (HFilter) or to perform a search (HReadSeekFirst, HReadSeekLast, etc.).
HBuildKeyValueANSI (Function)
Whatever the platform used, the data stored in HFSQL data files is in ANSI format.
StringToNum (Function)
Returns the numeric value of a character string. This feature enables you to perform numeric calculations on strings.
HBuildKeyValue (Function)
Builds the value of a composite key to implement a filter (HFilter) or to perform a search (HReadSeekFirst, HReadSeekLast, etc.).
ChronoValue (Function)
Indicates the time elapsed (in milliseconds) since the call to ChronoStart.
LocalStorageGet (Function)
Retrieves a value from the local storage.
Val (Function)
Returns the numeric value of a character string.
Operations in a Select query
The query editor allows you to perform operations on the values of an item...
<Array>.Min (Function)
Returns the lowest value in the array.
Min (Function)
Returns the lowest value.
Data persistence
The data persistence is used to store the value typed by the user...
<Array>.Max (Function)
Returns the greatest value in the array.
<Pivot table>.ListPositionHeader (Function)
Returns all values associated with a row or column header in a Pivot Table control.
Managing space characters in the searches?
xxWDGetReturnValue
Used to retrieve the return value further to a call to nWDEvaluate, nWDExecute or nWDExecuteEx......
FileToScreen (Function)
Automatically updates the controls in a window or page with: the values of the bound items...
<Window>.FromFile (Function)
Automatically updates the controls in a window or page with: the values of the bound items...
<Source>.ToPage (Function)
Automatically updates the controls of a page with: the values of the bound items in the current...
PageFromSource (Function)
Automatically updates the controls of a page with: the values of the bound items in the current...
How to create an SQL query to get a sum?
This help page explains how to create a Sum query with the query editor....
Heatmap chart
The Heatmap chart is used to represent in 2 dimensions data with 3 axes of values......
Handling a Range Slider through programming
WINDEV allows you to handle a Range Slider control through programming......
Binding a Check Box control to an item
End of break block
The End of break block is optional......
Multi-touch in a Chart control
One of the most common applications of the multi-touch feature is used to handle images......
Advanced dialog boxes
The advanced dialog boxes are windows allowing you to communicate with the user......
LooperModifyLine (Function)
Changes the values of the attributes in a row of a Looper control based on a data file or populated...
<Source>.StatNbRecRange (Function)
... of values.
HStatNbRecRange (Function)
... of values.
Native Sybase Connector for WINDEV and WEBDEV
WINDEV and WEBDEV propose an optional Native Connector to Sybase (also called Native Access...
Column of type Attribute
WINDEV and WEBDEV allow you to use columns of type "Attribute" in Table controls......
Zoom (Property)
The Zoom property gets or sets the zoom value: in an Image control. in a Map control....
ListSeek (Function)
Searches for an element in a List Box, ListView or Combo Box control (including the values...
Animation of Chart control
The animation of Chart controls allows you to define a dynamic display in your applications......
FileToPage (Function)
Automatically updates the controls of a page with: the values of the bound items in the current...
ModbusWriteRegister (Function)
Writes one or more registers (16-bit values) to a Modbus slave, starting at a specific address.
<Page>.FromFile (Function)
Automatically updates the controls of a page with: the values of the bound items in the current...