ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Declaring and using a variable
A variable is defined by name and type...
Service variable
The Service variable is used to...
Report based on a variable (Data binding)
A report based on a variable is used to directly print the information found in a WLanguage variable...
Composite variable
A composite variable contains different types of elements (members)...
TypeVar (Function)
Identifies the type of an expression, a variable (during a call to a procedure for example) or a control.
Advanced types
The advanced types of WLanguage are as follows
Checkers available in the code editor
The code editor proposes several tools used to correct the code...
WLanguage types
The different types in WLanguage are...
IsNumeric (Function)
Enables you to find out whether a variable or a control is:
  • a numeric (integer, real, currency or numeric).
  • a string that can be converted into numeric.
Assignment operators
Three assignment operators are available...
Constant
The constants are language elements whose value is fixed once and for all...
<Source>.Reset (Function)
Initializes:
  • one or all variables of file items with their default values.
  • one or all items of a Record variable with their default values.
HReset (Function)
Initializes:
  • one or all variables of file items with their default values.
  • one or all items of a Record variable with their default values.
Type inference
The type inference is used to simplify the declaration of variables when the variable type can be automatically deduced by the compiler...
Code style
A code style is used to automatically prefix the name of all the variables and project elements (windows, report controls, classes, etc.
dSaveImageGIF (Function)
Saves an image: in a file in GIF format. in memory....
dSaveImageBMP (Function)
Saves an image: in a file in BMP format. in memory....
dSaveImageJPEG (Function)
Saves an image: in a JPEG file. in memory....
GeometryIntersect (Function)
Checks whether two geometries have a non-empty intersection.
dSaveImagePNG (Function)
Saves an image: in a PNG file. in memory....
XMLFindNamespaceByName (Function)
Finds an XML namespace according to its XML node and in the parents of the node.
XMLFindNamespaceByURI (Function)
Finds an XML namespace from its URI (Universal Resource Identifier) in a node and in the parents...
CertificateList (Function)
Returns the list of certificates available on the computer.
CertificateSignString (Function)
Creates the signature of a character string.
CertificateCheckString (Function)
Checks the correspondence between a signature and a string.
Printing a watermark text
A report (and a duplicate copy) can include an additional text in the format of a watermark,...
TileAdd (Function)
Adds a new tile customization for the current Windows Store Apps application.
TileDeleteAll (Function)
Deletes all modifications made to the application tile.
TileDisplayBadge (Function)
Displays a badge (numeric notification or image) on the tile of a Universal Windows 10 App...
UPNPFindDevice (Function)
Finds a device based on its unique name (UDN).
COMQueryInterface (Function)
Calls the QueryInterface method of the specified COM object to get a specific interface...
geoRunApp (Function)
Starts the device's native maps application to display: a specific geographical location,...
AppServerInfoScheduledTask (Function)
Reads the description of a scheduled task.
AppServerModifyScheduledTask (Function)
Modifies an existing scheduled task.
AppServerDeleteScheduledTask (Function)
Deletes a scheduled task associated with the application (site or Webservice).
AppServerRunScheduledTask (Function)
Immediately starts the execution of a scheduled task on a WEBDEV Application Server.
AppServerListScheduledTask (Function)
Returns the list of scheduled tasks for the application (site or Webservice).