ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

The tables in a report
In a report, a table includes a set of controls called "Table cells"......
WDOptimizer: Overview
The different operations that can be performed with WDOptimizer are as follows......
iPageHeightLeft (Function)
Calculates the available height (in millimeters) left on the current page while taking into account the defined margins (top or bottom).
WDOptimizer: Optimizing indices
WDOptimizer includes multiple modes to optimize indices......
iAreaHeight (Function)
Calculates the height of a fixed-width area required to print the entire text that uses the current font.
FinPeriodInterest (Function)
Calculates for a given period the amount of interests due for a loan paid off by fixed periodic payments with a fixed interest rate.
Managing dates and times
WINDEV, WEBDEV and WINDEV Mobile propose several methods for managing dates and times in your applications......
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.)...
FinDecreasingRedemption (Function)
Calculates the amortization value of a good over a specific period of time, via the formula for fixed-rate decreasing amortization.
Variable scope
Variables can be declared anywhere in the code....
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......
BitcoinCoreHashRate( Function)
Returns the number of times the sha256 function had to be calculated per second to calculate the last block.. This number corresponds to a proof of work.
Configuring the "Relative duration" mask (date and time in natural language)
WINDEV, WEBDEV and WINDEV Mobile propose to use a "Relative duration" display mask for the Date controls......
StringCount (Function)
Calculates: the number of occurrences of a specific character string (by respecting the search criteria) in another character string. the number of occurrences of a set of strings in an array....
How to choose the data source of a control?
This help page presents the different data sources available for a control....
Content of the Table control
A Table control can be based on a data file, based on a variable or populated programmatically......
<Source>.ModifyStructure (Function)
Used to update the structure of an HFSQL data file by performing an automatic data modification (also called data synchronization).
HModifyStructure (Function)
Used to update the structure of an HFSQL data file by performing an automatic data modification (also called data synchronization).
Window control search functions
WINDEV allows the user to perform a search among all the texts found in a window or in a control......
TimestampType (Property)
The TimestampType property is used to: Find out the type of timestamp for an item. This item was defined in the data model editor or through programming. Define the type of timestamp for a Date, Time or DateTime item (when describing the item through programming)....
Binding a Link control to an item
HClose (Function)
Closes a data file or all the data files opened by the current user: all the corresponding physical data files are closed for the current user.
<Source>.Close (Function)
Closes a data file or all the data files opened by the current user: all the corresponding physical data files are closed for the current user.
How to populate a TreeView control using a data file?
By default, the TreeView control cannot automatically display the data coming from a data file......
<Source>.CheckIndex (Function)
Checks whether the data found in the index file (.NDX file) properly refers the data found in the data file (.FIC file).
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