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  • Operating mode in Windows Vista (and later)
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Stored procedures
<DiskFile variable>.ChangeSize (Function)
In french: <Variable FichierDisque>.ChangeTaille
Resizes an external file.
MyFile is DiskFile
// Open an external file
MyFile = fOpen("C:\MyDirectories\File.txt", foReadWrite)
IF NOT ErrorOccurred THEN
// Change size
Res = MyFile.ChangeSize(200)
<Result> = <File used>.ChangeSize(<New file size>)
<Result>: Boolean
  • True if the change of size was performed,
  • False otherwise.
<File used>: DiskFile variable
Name of the DiskFile variable initialized with fOpen or fCreate.
<New file size>: Integer
New size of the file in bytes.
  • The file is truncated if the new size is less than the initial size.
  • The file is enlarged if the new size is greater than the initial size: the content between the former size and the new size is not defined.
WINDEVWEBDEV - Server codeReports and QueriesUser code (UMC)

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).
In Windows Vista (and later), with the UAC mechanism (User Account Control) enabled, you must have administrator privileges to handle and/or modify the files or directories in 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 to the Windows directory or to the "Program Files" directory,
  • use the system directory of the application (returned by SysDir with the srAppDataCommun constant, for example).
Business / UI classification: Business Logic
Component: wd280std.dll
Minimum version required
  • Version 28
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Last update: 08/25/2022

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