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Versión: 2025

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Resultados 701-725 de 4686 para data file
Creating an executable: Data file directory
Two types of directories can be configured when creating the executable...
How do I run through a data file?
Looper control linked to a data file
A Looper control can be used to display the content of a data file or query...
Generating a description of a data file from a window or from a page
When you design a quick prototype, you often create windows (or pages) without defining any data files...
Analysis: Description of data file structure
The analysis allows you to define the structure of data files used by the project...
HExportJSON (Función)
Exporta los registros de un archivo de datos (HFSQL u OLE DB), vista o consulta a un archivo JSON.
HListFullTextIndex (Function)
Returns the list of full-text indexes of a file (a query or a view) recognized by the HFSQL engine.
HClose (Function)
Closes either a data file or all data files opened by the current user: all corresponding physical data files are closed for the current user.
<Source>.Watch (Function)
Trigger monitoring of write actions (add, modify or delete) performed on a data file present on an HFSQL server. In case of modification, a specific procedure can be triggered.
<Source>.ExportJSONString (Función)
Exporta los registros de un archivo de datos (HFSQL u OLE DB), vista o consulta a una cadena JSON.
HEndNoModif (Function)
Unlocks a file that was locked by the same program with HNoModif.
HDeactivateFilter (Function)
Temporarily disables the filter on a data file (view or query).
HDescribeFile (Función)
Describe un archivo de datos mediante programación.
fDataDir (Function)
Returns the full path of the directory of HFSQL data files specified by the user when installing the application.
<Source>.Reset (Function)
Initializes:
  • one or all variables of file items with their default values.
  • one or all items of a Record variable with their default values.
HRecordToString (Function)
Converts the content of the current record to string (in a data file, HFSQL view, query, etc.).
HLast (Function)
Sets the position on the last record of a data file according to a browse item.
HReset (Function)
Initializes:
  • one or all variables of file items with their default values.
  • one or all items of a Record variable with their default values.
HDescribeTrigger (Function)
Adds or modifies a trigger on an HFSQL data file.
HDeleteView (Function)
Deletes a previously created view. This function uses the former view mechanism.
HListREP (Function)
Returns the list of assignments for the data files handled by the current application, which means the list of physical files corresponding to the files described in the analysis.
HExportXML (Function)
Exports the records found in a data file (HFSQL or OLE DB), view or query to an XML file.
<Source>.DescribeTrigger (Function)
Adds or modifies a trigger on an HFSQL data file.
HGetCurrentPosition (Function)
Returns the approximate position of current record in the data file.
HRestorePosition (Function)
Restores the previously saved context of a file (function HSavePosition): record in progress, filter, playback pointers.
HListItem (Function)
Returns the list of items:
  • found in a data file ( a query or a view) known to the HFSQL engine. The data files defined by HDeclare, HDeclareExternal and HDescribeFile are taken into account.
  • found in a Record variable.
HWrite (Function)
Writes a record into a data file without updating the indexes corresponding to all keys used in the file.
Unalterable data files
This feature is used to signal that a data file cannot be modified after writing...
HSetPosition (Function)
Sets the position on a record, based on the approximate position of one of its items.
HReadPrevious (Function)
Sets the position on the previous record of a file according to a browse item.
HFilter (Function)
Defines and enables a filter on a data file, view or query.
<Source>.CheckUnaltered (Function)
Checks that one or all records in an unalterable data file have not been modified (e.g. with a hexadecimal editor).
HFound (Function)
Checks whether the current record corresponds to the current filter or search.
HFirst (Function)
Sets the position on the first record of a data file according to the specified browse item.
HDeactivateTrigger (Function)
Disables a trigger.
HListKey (Function)
Returns the list of keys in a data file (query or view) recognized by the HFSQL engine.
HListFile (Function)
Returns the list of files:
  • current analysis.
  • analyses in progress (projects with multiple analyses).
  • a specific analysis recognized by the HFSQL engine.
  • available on a connection via a Native Connector or an OLE DB driver.
  • for a group of files defined in the data model editor.
Using Unicode in HFSQL data files
The analysis proposes two types of Unicode items...
HListSynonym (Function)
Returns the list of synonyms used by a full-text index.
Managing connections
WINDEV, WEBDEV and WINDEV Mobile propose different methods for describing a connection...
NULL values in HFSQL
WINDEV, WEBDEV and WINDEV Mobile allow you to manage the NULL value in the items of the HFSQL data files and for all the other types of accesses (Native, OLE DB, ...
HDescribeLink (Function)
Describes a link between two data files programmatically.
HErrorLock (Function)
Used to check whether a lock error occurred.
HDeleteAll (Function)
Deletes all records from a data file, an HFSQL view or a query.
HErrorPassword (Function)
After the execution of a read or write function in a data file, used to find out whether an error caused by a wrong password occurred on this data file.
<Source>.SavePosition (Function)
Stores the current context of a data file: current record, filter, read pointers.
<Source>.RestorePosition (Function)
Restores the previously saved context of a file (function HSavePosition): record in progress, filter, playback pointers.
HUnlockRecNum (Function)
Unlocks a record locked by:
  • HLockRecNum,
  • a read function used with a locking parameter (HRead associated with the hLockWrite or hLockReadWrite constant for example).
HExportJSONString (Función)
Exporta los registros de un archivo de datos (HFSQL u OLE DB), vista o consulta a una cadena JSON.
HReadNext (Function)
Sets the position on the next data file record according to a browse item.
<Source>.Open (Function)
Opens a data file.
HCheckUnaltered (Function)
Checks that one or all records in an unalterable data file have not been modified (e.g. with a hexadecimal editor).
HDelete (Function)
Deletes a record from a data file (query or view).
HDescribeFullTextIndex (Function)
Describes a full-text index of data file created programmatically.
<Source>.Previous (Function)
Sets the position on the previous record of the data file according to a browse item.
HExportXLS (Function)
Exports records from a data file (HFSQL or OLE DB), view or query to an Excel file (XLSX).
HOut (Function)
Used to find out whether the record on which you want to be positioned is located outside the data file, filter, view or query.
HPrevious (Function)
Sets the position on the previous record of the data file according to a browse item.
<Source>.ListLink (Function)
Returns the list of links (Merise) in the current analysis or in a specific analysis.
HExportCSV (Function)
Exports the records found in a data file (HFSQL or OLE DB), a view or a query to a CSV file.
Zombie data files and items
During the life of an application, items live and die...
HDescribeItem (Function)
Describes a file item programmatically.
<Source>.DeactivateFilter (Function)
Temporarily disables the filter on a data file (view or query).
Application triggers
A trigger is a WLanguage procedure automatically called by the HFSQL engine whenever a modification is performed (addition, deletion, modification, ...) on a record of a data file.
HUnlockFile (Function)
Unlocks the records of a data file:
  • locked by HLockFile.
  • individually locked by a locking read function.
<Source>.RecordToString (Function)
Converts the content of the current record to string (in a data file, HFSQL view, query, etc.).
HNoModif (Function)
Forbids all the modifications on a data file (for all the programs, including the one that requested the no-modification policy).
HListLink (Function)
Returns the list of data file bindings (Merise type) present:
  • in the current analysis,
  • in ongoing analyses (projects with multiple analyses).
  • in a specific analysis.
HWatch (Function)
Trigger monitoring of write actions (add, modify or delete) performed on a data file present on an HFSQL server. In case of modification, a specific procedure can be triggered.
HCreateView (Function)
Creates an HFSQL view.
This function uses the former view mechanism.
HReadLast (Function)
Sets the position on the last record of a data file according to a browse item.
HOpen (Function)
Opens a data file.
HRead (Function)
Reads a record in a file according to a given record number.
HRetrieveRecord (Function)
Returns the content of the current record (in a file, a view or a query, ...).
HSavePosition (Function)
Stores the current file context (current record, filter, pointers).
LuhnCheck( Función)
Comprueba que la secuencia dada es válida según la fórmula de Luhn.
InsertReference (Función)
Agrega la referencia de un objeto en la posición dada en un array unidimensional.
<Variable Image>.Blur (Función)
Difumina toda el área dada en una Variable de tipo Image.
<picLayer Variable>.Blur (Función)
Difumina toda el área dada en una variable de tipo picLayer.
<Array>.InsertReference (Función)
Agrega la referencia de un objeto en la posición dada en un array unidimensional.
Declaración GOTO
El GOTO se usa para ejecutar un código identificado por una etiqueta dada....
ArrayInsertReference (Función)
Agrega la referencia de un objeto en la posición dada en un array unidimensional.
LuhnCalculate( Función)
Calcula el siguiente dígito de control de Luhn para una secuencia dada.
Programación de los controles del looper de navegación
Estos son los principales conceptos para la programación de los controles Looper basados en un archivo de datos......
<Chart>.PointColor (Función)
Inicializa la color de un punto específico en uno de los siguientes tipos de gráfico: Line, Dispersión, Gráfico de burbujas....
xmlSignatureInformationKeyX509 (Tipo de Variable)
El tipo xmlSignatureInformationKeyX509 define la información que se debe incluir en la parte KeyInfo de la firma XML.
Vinculación de una OLE control a un elemento
Una control OLE puede estar vinculada a un elemento de un archivo de datos, consulta, etc....
iAreaHeight( Función)
Calcula la altura de un área de ancho fijo necesaria para imprimir todo el texto que utiliza la fuente actual.
grPointColor (Función)
Inicializa la color de un punto específico en uno de los siguientes tipos de gráfico: Line, Dispersión, Gráfico de burbujas....
SemaphoreStart( Función)
Bloquea el hilo actual hasta que se abra el semáforo (es decir, hasta que haya un punto "libre" disponible en la sección protected).
Gestión de puntos de interrupción
Durante una prueba de proyecto en el editor, los puntos de interrupción se utilizan para iniciar automáticamente el depurador desde un Line dado ......
Undocked (Property)
El Undocked Property se utiliza para determinar si un panel de una Ficha o control Cinta de opciones está desacoplado.
Visita guiada
Una visita guiada presenta una serie de características, que se muestran en un tooltip de la ventana o página actual......
Crear una aplicación con la metodología RAD
El RAD (Desarrollo Rápido de Aplicaciones) es una tecnología utilizada para crear fácilmente una aplicación completa (o sitio).......
Manipular archivos de datos en PHP
WEBDEV le permite crear un sitio PHP que maneja archivos de datos.......
MemcachedAddSuffix( Función)
Añade un valor al final del valor existente en la caché para la clave dada.
<Organization Chart>.InfoXY (Función)
Devuelve el índice del elemento encontrado en una posición dada en una control Organigrama.
MemcachedAddPrefix( Función)
Añade un valor al principio del valor existente en la caché para la clave dada.
WDOptimizer: Optimizar índices
WDOptimizer incluye múltiples modos para optimizar índices......
OrgInfoXY (Función)
Devuelve la índice del elemento que se encuentra en una posición dada en un control Organigrama.