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Versión: 2025

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Resultados 376-400 de 4687 para data file
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...
Creating an executable: Data file directory
Two types of directories can be configured when creating the executable...
Analysis: Description of data file structure
The analysis allows you to define the structure of data files used by the project...
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...
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.
HEndNoModif (Function)
Unlocks a file that was locked by the same program with HNoModif.
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.
<Source>.ExportJSONString (Función)
Exporta los registros de un archivo de datos (HFSQL u OLE DB), vista o consulta a una cadena JSON.
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.).
HExportJSON (Función)
Exporta los registros de un archivo de datos (HFSQL u OLE DB), vista o consulta a un archivo JSON.
HListStopWord (Function)
Returns the list of stop words used by a full-text index.
<Source>.CheckUnaltered (Function)
Checks that one or all records in an unalterable data file have not been modified (e.g. with a hexadecimal editor).
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.
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.
HLast (Function)
Sets the position on the last record of a data file according to a 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.
<Source>.Open (Function)
Opens a data file.
HNoModif (Function)
Forbids all the modifications on a data file (for all the programs, including the one that requested the no-modification policy).
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.).
HReadNext (Function)
Sets the position on the next data file record according to a browse item.
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).
DateTimeByDefault (Función)
Permite definir el valor predeterminado de variables de tipo Date, Time y DateTime.
La aplicación Java y WINDEV
Una aplicación de Java es una aplicación totalmente compilada en Java......
SelectionOnly (Property)
El SelectionOnly Property se utiliza para: Averigua qué elementos de la Tabla o de la control Tabla TreeView se imprimirán: imprimir todos los registros o sólo los registros seleccionados. Cambiar el modo de impresión de las filas de la Tabla o control Tabla TreeView: imprimir todos los registros o sólo los registros seleccionados....
Keep-alive en la conexión
2. Ejemplos y componentes proporcionados con WEBDEV
Reporte basada en un control Tabla TreeView
Puede utilizar un reporte basado en un control Tabla TreeView para imprimir directamente la información mostrada en un control Tabla TreeView encontrado......
Controles Combo Box y List Box: Funcionalidades automáticas (AAF)
Los controles List Box y Combo Box pueden beneficiarse de varios AAFs.......
¿Cómo agregar un nuevo fila a un control Tabla?
Esta página de ayuda explica cómo añadir una fila a una control Tabla mediante programación....
grSunburstAddData (Función)
Agrega un dato a una carta de Sunburst.
<Chart>.SunburstAddData (Función)
Agrega un dato a una carta de Sunburst.
<Tabla dinámica>.Filter (Función)
Habilita o deshabilita un filtro en una control Tabla dinámica.
JavaExecute( Función)
Inicia una aplicación Java o un applet Java invocando el método "Main" de una clase Java dada.
Height (Property)
La altura Property se usa para get y cambiar la altura: de un control o bloque en un reporte. de una control (en una ventana), ventana, fila de una Tabla, Cuadro de Lista o control ListView, opción de un Botón de Radio o control Casilla de verificación, romper cabecera o pie de una Tabla o control Looper. de un control (en un Page), romper cabecera o pie de página en una Tabla o control Looper. La control puede ser superpuesta o no. de una celda de ruptura en una Tabla o control Looper....
Personalizar los controles Interruptor
El control Interruptor es un control Casilla de verificación de 2 estados (on/off, true/false, yes/no)......
2. Ejemplos proporcionados con WINDEV
Los ejemplos proporcionados con WINDEV tienen como objetivo ayudarle a conocer las funcionalidades de WINDEV....
Errores de gestión específicos de Conectores Nativos
Cuando una función HFSQL falla (devuelve False por ejemplo), el número de error correspondiente es devuelto por HError......
Instanciación de un objeto
Para acceder a una clase, el objeto debe declararse como parte de la clase a manipular, esto se llama Instanciación de objeto object.......
Menú contextual de las columnas de casillas de verificación (AAF)
La Tabla y el TreeView controles Tabla pueden proponer columnas Check Box que permiten al usuario seleccionar las opciones solicitadas......
Animación de controles
WINDEV y WINDEV Mobile le permiten animar los controles que se encuentran en una ventana........
Gestión de las bases de datos de Hive
Hive es una capa de software de Hadoop utilizada para ejecutar consultas.......
Parámetros de la Procedure utilizada por fReadLine
WLanguage Procedure ("Callback") llamada por fReadLine para cada Line leído en el fichero.
Control Diagrama de Gantt
Un diagrama de Gantt permite ver en una gráfica el progreso de un proyecto.......
Entidad de un MDL
Para agrupar la información según el método MERISE, se deben crear entidades.......
Control Casilla de verificación
Una casilla de verificación puede corresponder a......
FTPDate (Example)
Usage example of the FTPDate function