DosNewSize

This call changes the size of a file.

Syntax
DosNewSize (FileHandle, FileSize)

Parameters

 * FileHandle (HFILE) - input : Handle of the file whose size is being changed.
 * FileSize (ULONG) - input : File's new size in bytes.

Return Code

 * rc (USHORT) - return:Return code descriptions are:
 * 0 NO_ERROR
 * 5 ERROR_ACCESS_DENIED
 * 6 ERROR_INVALID_HANDLE
 * 26 ERROR_NOT_DOS_DISK
 * 33 ERROR_LOCK_VIOLATION
 * 87 ERROR_INVALID_PARAMETER
 * 112 ERROR_DISK_FULL

Remarks
When DosNewSize is called, the file must be open in a mode that allows write access. If the file is a read-only file, its read-only status must be changed with DosSetFileMode before you can open the file for write access.

The open file can be truncated or extended in size. If the file is being extended, the file system makes a reasonable attempt to allocate the additional bytes for the file in a contiguous (or nearly contiguous) space on the medium. The value of the new bytes is undefined.

C

 * 1) define INCL_DOSFILEMGR

USHORT rc = DosNewSize(FileHandle, FileSize);

HFILE  FileHandle;    /* File handle */ ULONG  FileSize;      /* File's new size */

USHORT rc;            /* return code */ 

MASM
 EXTRN DosNewSize:FAR INCL_DOSFILEMGR    EQU 1

PUSH  WORD    FileHandle    ;File handle PUSH  DWORD   FileSize      ;File's new size CALL  DosNewSize

Returns WORD 