The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.
FNSEEK macro
The FNSEEK macro provides the declaration for the application-defined callback function to move a file pointer to the specified location in an FDI context.
Syntax
void FNSEEK( [in] INT_PTR hf, long dist, int seektype );
Parameters
- hf [in]
-
An application-defined value used to identify the open file.
- dist
-
The number of bytes to move the file pointer.
- seektype
-
The starting point for the file pointer move.
Return value
The indicated callback function returns the offset, in bytes, of the new position from the beginning of the file. However, a value of -1 indicates an error.
Remarks
The function accepts parameters similar to _lseek.
Examples
FNSEEK(fnFileSeek)
{
return SetFilePointer((HANDLE)hf, dist, NULL, seektype);
}
Requirements
|
Header |
|
|---|
See also
Show: