<Source>.Declare (Function)

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<Source>.Declare on analyses from previous versions

ErrorStatusModification

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New WINDEV, WEBDEV, WINDEV Mobile 25 feature!

Miscellaneous
<Source>.Declare on analyses from previous versions

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See also

<Source>.Declare (Function)

In french: <Source>.Déclare

Not available with this kind of connection

Declares a description of data file (found in an analysis) in the current project. This import is temporary and it can be canceled by HCancelDeclaration.

Versions 18 and later

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Windows Store apps mode.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Versions 24 and later

This function is now available for iPhone/iPad applications.

New in version 24

This function is now available for iPhone/iPad applications.

Remark: From version 19, HFSQL is the new name of HyperFileSQL.

Example

// Declare a SupplierWD data file from the SALESMGT analysis
Supplier.Declare("\Examples\SalesMgt\SALESMGT.WDD", "", "SupplierWD")

Syntax

<Result> = <Source>.Declare(<Full path of WDD> [, <WDD password> [, <Alias> [, <Options>]]])

<Result>: : Boolean

True if the operation was performed,
False if a problem occurred. HError is used to identify the error.

<Source>: Type corresponding to the specified source

Logical name of the data file to import, used in the external analysis.

<Full path of WDD>: Character string (with quotes)

Full access path to the analysis file (.WDD file) containing the description of the HFSQL data file to import (up to 260 characters).
This file can correspond to a WDD file created by an earlier version of WINDEV or WEBDEV.

<WDD password>: Optional character string (with quotes)

Password associated with the analysis.
Empty string ("") if no password is used.

<Alias>: Optional character string (with quotes)

<Options>: Optional integer constant

Search options:
hDisk
(Default value) The <Full path of WDD> analysis is sought on the disk (most common case).
hWDL The <Full path of WDD> analysis is sought according to the following priorities:
In the main library (.WDL file)
In the different libraries according to the load order, then on disk.
In the main library of the component.
In the secondary libraries of the component according to the load order.

Remarks

Miscellaneous

There is no need to have an analysis linked to the current application to import a description of data file.
All the HFSQL functions can be used on the imported data file except for the integrity management.
You can import as many descriptions as necessary.
This function allows you to use data files described in the earlier WINDEV and WEBDEV analyses (WINDEV 4.1 to 5.5, WEBDEV 1.0 and 1.5).

<Source>.Declare on analyses from previous versions

The Hyper File engine version 4.1 to 5.5 requires an open analysis to operate (unlike HFSQL Classic), so the analysis of the first data file accessed is opened in the Hyper File 5 engine.

An alias name must be used to access a data file with the following characteristics:

data file of another analysis.
data file with the same logical name as one of the data files found in the opened analysis.

Caution: The data files described in the earlier WINDEV and WEBDEV analyses (WINDEV 4.1 to 5.5, WEBDEV 1.0 and 1.5) are handled by the Hyper File engine version 5.5: WD553HF.DLL.
This module exists in 32-bit version only.
Therefore, an application that must view data in format 5.5 (or earlier) must:

necessarily be compiled in 32-bit mode (and not in 64-bit mode),
limit its capabilities to the ones available in WINDEV version 5.5. For example, the hWDL constant did not exist in version 5.5: therefore, it cannot be used on a Hyper File 5.5 file.

Component : wd250hf.dll