ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

HErrorInfo (Function)
Returns a detailed information about the last error triggered by the HFSQL engine.
Serial and parallel port management functions
List of functions for managing serial and parallel ports...
HNoModif (Function)
Forbids all the modifications on a data file (for all the programs, including the one that requested the no-modification policy).
FTPName (Function)
Returns the name of last file accessed by an FTP function (File Transfer Protocol).
grRealTimeInterval (Function)
Sets the time interval visible in a time chart with real-time display.
mqttSession (Type of variable)
The mqttSession type is used to define the parameters for connecting to the MQTT broker.
How to associate an image with an element found in a TreeView Table?
This help page explains how to customize the default image associated with the elements found in a TreeView Table....
ModbusWriteRegister (Function)
Writes one or more registers (16-bit values) to a Modbus slave, starting at a specific address.
Spacing out a selection of controls
To create modern interfaces, you need to increase spacing between the controls in your windows......
Error 122: The name of an Automation object must be a string
Characteristics of the columns in a Table control in a window (prefix syntax)
The columns are used to display information in a Table control......
Search and full-text index
HFSQL proposes a quick search for character strings in the data......
dbgStartRecording (Function)
Starts recording a test scenario (also called reproduction scenario).
SemaphoreDestroy (Function)
Explicitly destroys a semaphore.
SemaphoreEnd (Function)
Allows one or more threads to exit from the area protected by the semaphore.
HClusterSynchronizationErrorInfo (Function)
Returns the error that occurred during the previous synchronization step of HFSQL cluster.
SemaphoreStart (Function)
Locks the current thread until the semaphore is opened (which means until a "free" spot becomes available in the protected section).
Thread management constants
List of constants used by the functions for managing threads, critical sections, semaphores, mutexes, ......
WDAdminHF: Saving the databases
The remote HFSQL administrator allows you to create backups of HFSQL Client/Server data files......
EmulateWindow (Function)
Indicates the test that will be run during the next window opening.
MQTTConnect (Function)
Used to connect to a MQTT server (also called "Broker").
MQTTDisconnect (Function)
Allows you to disconnect from a MQTT server (also called "Broker").
DocUndo (Function)
Undoes the last action performed on a Word Processing document.
DocRedo (Function)
Restores the last undone action on a Word Processing document.
<Chart>.TimeLevelMask (Function)
Defines the display mask for a level of time scale in a chart.