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Sets the size on disk of the specified file to the specified length.
int _FCHSize(FCHAN chan, long length) FCHAN chan; /* File to change. */ long length; /* New length for the file in bytes. */ |
Remarks
The specified length may extend or truncate the file. _FCHSize( ) returns 0 if it's successful in changing the length of the file, or – 1 if it fails.
For more information on how to create an API library and integrate it with Visual FoxPro, see Accessing the Visual FoxPro API.
Example
The following example creates a file Temp.txt and sets its size to 8196 bytes using _FCHSize(В ).
Visual FoxPro Code
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|---|---|
SET LIBRARY TO FCHSIZE DIR temp.txt | |
C Code
| В | Copy Code |
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#include <pro_ext.h>
FAR Example(ParamBlk FAR *parm)
{
FCHAN fchan = _FCreate("temp.txt", FC_NORMAL);
_FCHSize(fchan, 8196);
_FClose(fchan);
}
FoxInfo myFoxInfo[] = {
{"FCHSIZE", (FPFI) Example, CALLONLOAD, ""},
};
FoxTable _FoxTable = {
(FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
}; | |