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| en:docs:fapi:dosnewsize [2018/08/30 16:15] – created prokushev | en:docs:fapi:dosnewsize [2021/12/05 10:58] (current) – prokushev | ||
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| + | {{page> | ||
| + | |||
| + | ====== DosNewSize ====== | ||
| This call changes the size of a file. | This call changes the size of a file. | ||
| - | ==Syntax== | + | ===== Syntax |
| - | | + | <code c> |
| + | DosNewSize (FileHandle, | ||
| + | </ | ||
| - | ==Parameters== | + | ===== 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== | ||
| - | rc (USHORT) - return | ||
| Return code descriptions are: | Return code descriptions are: | ||
| - | * 0 NO_ERROR | ||
| - | * 5 ERROR_ACCESS_DENIED | ||
| - | * 6 ERROR_INVALID_HANDLE | ||
| - | * 26 | ||
| - | * 33 | ||
| - | * 87 | ||
| - | * 112 ERROR_DISK_FULL | ||
| - | ==Remarks== | + | * 0 NO_ERROR |
| - | 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. | + | * 5 ERROR_ACCESS_DENIED |
| + | * 6 ERROR_INVALID_HANDLE | ||
| + | * 26 | ||
| + | * 33 | ||
| + | * 87 | ||
| + | * 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. | 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. | ||
| - | ==Example Code== | + | ===== Example Code ===== |
| - | === C Binding=== | + | |
| - | <PRE> | + | ==== C Binding==== |
| + | <code c> | ||
| #define INCL_DOSFILEMGR | #define INCL_DOSFILEMGR | ||
| Line 36: | Line 47: | ||
| USHORT | USHORT | ||
| - | </PRE> | + | </code> |
| - | ===MASM Binding=== | + | ==== MASM Binding |
| - | <PRE> | + | <code asm> |
| EXTRN DosNewSize: | EXTRN DosNewSize: | ||
| INCL_DOSFILEMGR | INCL_DOSFILEMGR | ||
| Line 46: | Line 57: | ||
| PUSH | PUSH | ||
| CALL | CALL | ||
| + | |||
| + | </ | ||
| Returns WORD | Returns WORD | ||
| - | </ | ||
| - | |||
| - | |||
| - | ====== Note ====== | + | ===== Note ===== |
| Text based on http:// | Text based on http:// | ||




