ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

LuhnCalculate (Function)
Calculates the next Luhn check digit for a given sequence.
iTextWidth (Function)
Calculates the width (in millimeters) of the text to print, according to the specified font.
FinLinearRedemption (Function)
Calculates the value of linear amortization of a product over a specific period of time.
PVTCalculateAllAsynchronous (Function)
Entirely calculates or recalculates a Pivot Table control, without blocking the application.
WDOptimizer: Optimizing indices
WDOptimizer includes multiple modes to optimize indices......
Mean (Function)
Calculates the mean of several elements: elements found in an array, numeric values, ......
The log process
...A log is a special file that contains the history of all changes made to one or more data files over a given period of time (date the file was created, last automatic data modification, last backup created with WDLog, etc.)...
GetUUID256 (Function)
Calculates a 256-bit Universal unique identifier ("UUID").
GetUUID (Function)
Calculates a 128-bit Universal Unique Identifier ("UUID").
FinInterestRate (Function)
Calculates the interest rate for a loan over a specific period of time with fixed payments.
MatDeterminant (Function)
Calculates the determinant of a square matrix (the number of rows is equal to the number of columns).
<Pivot Table>.CalculateAllAsynchronous (Function)
Entirely calculates or recalculates a Pivot Table control, without blocking the application.
Managing dates and times
WINDEV, WEBDEV and WINDEV Mobile propose several methods for managing dates and times in your applications......
Managing videos (transmitted by a Web Camera)
To manage the video sequence currently broadcasted by the web camera installed on the current computer, WINDEV proposes......
iPageWidth (Function)
Calculates the width (in millimeters) of the printable page while taking the left or right margins into account.
iPageHeight (Function)
Calculates the height of printable page (in millimeters) while taking the top or bottom margins into account.
WDLog: Restoring a data file from its log
WDLog is used to apply to a backup of a data file the different operations saved in the log of this file......
How to choose the data source of a control?
This help page presents the different data sources available for a control....