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  • Operating mode in Windows Vista (and later)
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Stored procedures
Resizes an external file.
Example
WINDEVWEBDEV - Server codeReports and QueriesUser code (UMC)Ajax
// Open an external file 
FileID is int
Res is boolean
FileID = fOpen("C:\MyDirectories\File.txt", foReadWrite)
IF FileID <> -1 THEN
// Change size
Res = fChangeSize(FileID, 200)
...
END
WINDEVWEBDEV - Server codeReports and QueriesUser code (UMC)Ajax
MyTextFile is DiskFile
Res is boolean
// Open an external file 
MyTextFile = fOpen("C:\MyDirectories\File.txt", foReadWrite)
IF NOT ErrorOccurred THEN
// Change size
Res = fChangeSize(MyTextFile, 200)
...
END
Syntax
<Result> = fChangeSize(<File used> , <New file size>)
<Result>: Boolean
  • True if the size changed,
  • False otherwise.
<File used>: Integer or DiskFile variable
<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.
Remarks
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: wd290std.dll
Minimum version required
  • Version 10
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Last update: 11/21/2023

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