ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Customizing the errors
The WEBDEV administrator (Development version) is used to customize the error messages of a WEBDEV site......
Binding a Slider control to an item
A Slider control can be bound to an item in a data file, query, etc....
OpenChild (Function)
Opens a non-modal child window.
Error 1012: The class member is not global: it cannot be accessed from a global method
Binding a Link control to an item
OrganizerSelectedRange (Function)
Returns the start or end date and time of the time slot selected in an Organizer control.
SchedulerSelectedRange (Function)
Returns the start or end date and time of the time slot selected in a Scheduler control.
<Organizer>.SelectedRange (Function)
Returns the start or end date and time of the time slot selected in an Organizer control.
MemcachedAddPrefixKeyGroup (Function)
Adds a value at the start of existing value in the cache for the given key on a group of servers.
ControlVisible (Function)
Makes a control (or a group of controls) visible in a window. During this operation, an animation can be performed on the controls.
ControlInvisible (Function)
Makes a control (or a group of controls) invisible in a window. An animation can be set on the controls during this operation.
OperationLogDirectory (Property)
The OperationLogDirectory property is used to manage the directory of the operation log file associated with a data file.
Overview of OOP (Object Oriented Programming)
The object-oriented programming (called "OOP") is a programming paradigm in which the programs are organized as sets of objects......
ErrorThrow (Function)
Throw a non-fatal error.
UploadCopyFile (Function)
Saves on the server a file "uploaded" by the Web user. This upload may have been performed: via an "Upload" edit control. via a single-file or multi-file Upload control....
ThreadWait (Function)
Waits for the end of the execution of the specified thread.
<Thread variable>.Wait (Function)
Waits for the end of the execution of the specified thread.
Page in Session mode: Populating controls after a long process
In a web application, you may need to run long processes (for example, to update counters......
Using the Google Maps service
The Google Maps service is an Internet mapping software proposed by Google......
WDDIXIO overview
Managing actions with Undo/Redo
WINDEV allows you to easily manage the Undo/Redo feature in your applications with the ActionXXX functions......
UncompleteDir (Function)
Removes the '/' or '\' characters from the end of a string, if necessary....
Retrieving documents coming from Twain devices
Several WINDEV functions allow you to retrieve documents from a Twain device......
BLOCK
The <BLOCK> keyword is used in the code editor to declare custom blocks of code. These blocks of code are used to highlight the different steps of an algorithm and to group the declarations of variables or members.
Creating an executable: Data file directory
Two types of directories can be configured when creating the executable......