ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

FAQ about Windows Vista and later
This help page presents a list of problems that may occur when using Windows Vista and later...
The UAC mechanism in Windows Vista (and later)
To increase security against worms and viruses, Windows Vista/7 implemented the UAC (User Account Control) mechanism...
Creating an executable: Manifest management
When running an executable, Windows Vista (and later) performs several checks regarding the rights of the current user via the UAC mechanism (User Account Control)...
Difference of behavior in Windows Vista (and later)
The test of your project was run using one of the Vista/7 test options...
Windows: What to bear in mind if your customers use Vista (and higher)
Windows Vista (and later) proposes several improvements...
HOnServerCall (Function)
Customizes the management of message display on the client computer and the management of disconnection from a client computer.
Events associated with a Multimedia control
List of events associated with a Multimedia control...
diffCreate (Function)
Compares two buffers and creates a buffer containing the differences between these two buffers.
InsertColumn (Function)
Inserts a column at a given position into an advanced two-dimensional array property (xlsDocument, ...).
ByAddress (Property)
The ByAddress property is used to determine if a procedure parameter was passed by address.
grSeriesSecondaryAxis (Function)
Defines whether a series will be drawn on the secondary axis.
SchedulerAddAppointment (Function)
Adds a new appointment into a Scheduler control.
CharactUnicode (Function)
Returns the character corresponding to the specified Unicode code.
RGBToHTML (Function)
Returns the HTML color corresponding to the RGB color.
XMLSave (Function)
Saves an XML document in a file.
dbgSaveMemoryDump (Function)
Saves a dump of memory used by the application.
GetGUID (Function)
Calculates a globally unique identifier (named "GUID"), whose size is: equal to 16 bytes, which means 32 hexadecimal characters. equal to 32 bytes, which means 64 hexadecimal characters....
GetColor (Function)
Allows you to get a set of harmonious colors without having to use a table of colors.
LineToPosition (Function)
Returns the position of the first character of a line in a block of text.
FilterWithBounds (Property)
The FilterWithBounds property is used to determine if bounds have been specified for the filter implemented by HFilter on an HFSQL data file, view or query.
KeyExpression (Property)
The KeyExpression property is used to set the different components of a composite key.
HugeFile (Property)
The HugeFile property is used to configure the maximum size of a data file.
NbKeyItem (Property)
The NbKeyItem property is used to get the total number of key items (including composite keys) in a record of: a file described in the data model editor, a file described through programming, an HFSQL view, a query....
Image drawing and processing functions
List of image drawing and processing functions...
ControlContextMenu (Function)
Identifies the control on which the context menu was opened.
Min (Function)
Returns the lowest value.
MatDeterminant (Function)
Calculates the determinant of a square matrix (the number of rows is equal to the number of columns).
MatWrite (Function)
Writes an element into a matrix.
MatRead (Function)
Reads the value of a matrix element.
HFree (Function)
Transforms the crossed records (HCross) into deleted records.