fSaveBuffer (Function)

ONLINE HELP
WINDEV, WEBDEV AND WINDEV MOBILE

Version:

Home | Sign in | English

Functions for managing external files

Operating mode in Windows Vista (and later)

See also

fSaveBuffer (Function)

In french: fSauveBuffer

Creates and fills an external file with the content of a string or buffer variable. If the file already exists, it is deleted and re-created.

Remarks:

The strings containing binary "0" ("\0") are supported.
the created file is always in ANSI format.
The buffer variable is filled by fLoadBuffer.

Versions 17 and later

This function is now available for iPhone/iPad applications.

This function is now available for Android applications.

This function is now available for Windows Mobile applications.

This function is now available for Java applications.

New in version 17

This function is now available for iPhone/iPad applications.

This function is now available for Android applications.

This function is now available for Windows Mobile applications.

This function is now available for Java applications.

This function is now available for iPhone/iPad applications.

This function is now available for Android applications.

This function is now available for Windows Mobile applications.

This function is now available for Java applications.

Versions 18 and later

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

Versions 19 and later

This function is now available in the code of stored procedures.

New in version 19

This function is now available in the code of stored procedures.

Versions 21 and later

This function is now available for PHP sites.

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

New in version 21

This function is now available for PHP sites.

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

This function is now available for PHP sites.

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

Example

MyBuffer is Buffer
...
fSaveBuffer("c:\tmp\MyFile.raw", MyBuffer)

Syntax

<Result> = fSaveBuffer(<File to create> , <Content>)

<Result>: Boolean

True if the operation was successful,
False otherwise. To find out the name of the error, use the function ErrorInfo with the constant errMessage.

<File to create>: Character string (with quotes)

Name and full (or relative) path of file to create. A UNC path can be used. The file extension determines the type of file to create.
This path must be a full path or a UNC path. It cannot be a relative path.
The file path can correspond to a full path or to a path relative to the current directory (returned by fCurrentDir). This parameter is case-sensitive.
Reminder: On iPhone/iPad, the file system is read-only on the device and on the emulator. An application can only write to its setup directory or one of its subdirectories.
The file path can correspond to a full path or to a path relative to the current directory (returned by fCurrentDir). This parameter is case-sensitive.
Reminder: In Android, the file system is read-only on the device and on the emulator. An application can only write to its setup directory or one of its subdirectories, as well as to the external memory (SDCard).

<Content>: Buffer variable or Character String variable

Name of the Buffer or Character String variable that constitutes the content of the file.

Remarks

Operating mode in Windows Vista (and later)

If this function does not operate properly in Windows Vista (and later), check whether the file or directory used is not in one of the system directories (Windows directory or "Program Files" directory).

Indeed, in Windows Vista (and later), with the UAC mechanism (User Account Control) enabled, you must have the administrator privileges to handle and/or modify the files or directories in the system directories (Windows directory or "Program Files" directory).

Programming tip: To handle and/or modify the files or directories without administrator privileges, you should:

avoid writing into the Windows directory or into the "Program Files" directory,
use the system directory corresponding to the application (returned by SysDir associated with the srCommonAppData constant).

Remark: In Windows Vista (and later), the virtualization mechanism is used to make the applications compatible with Vista. If the file is created in a system directory without having sufficient rights, this file will actually be created in another directory (C:\Users\<LOGIN>AppData\Local\VirtualStore\Windows\). In this case, the file cannot be shared between several applications.

Component : wd260std.dll