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...
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...
WLanguage types
The different types in WLanguage are...
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.
nWDEvalue: Evaluation of the value of an element
Evaluating the value of an element......
Font
The Font keyword can correspond to: a Font variable. the Font property....
HInfoTask (Function)
Returns the characteristics of a scheduled task in a hScheduledTask variable].
CertificateCheckFileSignatureBuffer (Function)
... variable.
XMLOpen (Function)
Loads an XML document from a file, a URL or a string into an xmlDocument variable.
Error 105: Redefinition of the local variable
dLoadImage (Function)
Loads an image in an Image variable from a memo, a file or a binary buffer.
dCrop (Function)
Returns the cropped part of an image. This image is found in an Image variable.
dEncrustColor (Function)
Encrusts a color in an image found in an Image variable].
dCopyWindowImage (Function)
Copies the image from a WINDEV window to an Image variable or to an Image control.
PicSave (Function)
Saves the image found: in an Image Editor control. in a WDPic variable....
SQLAssociate (Function)
Automatically associates each column of the query result with a control or with a variable...
dModifySaturation (Function)
Modifies the saturation of an image found: in an Image control, in an Image variable....
dModifyLightness (Function)
Changes the lightness of an image found: in an Image control, in an Image variable....
dModifyContrast (Function)
Changes the contrast of an image contained: in an Image control, in an Image variable....
dCopieImageChamp (Control)
Copies the image of a control in a WINDEV window to a variable of type Image.
fSaveBuffer (Function)
Creates and fills a text file with the content of a string or buffer variable.
fLoadBuffer (Function)
Loads the content of an external file (text, image, ...) in a buffer variable.
SOAPAddAttribute (Function)
Adds an attribute to an automatic variable generated by the import of a web service.