==== FS_CANCELLOCKREQUEST ====

**Purpose**

Cancels an outstanding FS_FILELOCKS request on a file.   

**Calling Sequence**

<code c>
int far pascal FS_CANCELLOCKREQUEST(psffsi, psffsd, pLockRange)

struct sffsi far * psffsi;
struct sffsd far * psffsd;
struct filelock far * pLockRange;
</code>

**Where**

//psffsi// is a pointer to the file-system-independent portion of an open file instance.   

//psffsd// is a pointer to the file-system-dependent portion of an open file instance.   

//pLockRange// is a pointer to a filelock structure. The filelock structure has the following format:   

<code c>
struct FileLock {
    unsigned long FileOffset;   /* offset where the lock/unlock begins  */
    unsigned long RangeLength;  /* length of region locked/unlocked     */
}
</code>

**Remarks**

This entry point was added to support the 32-bit //DosCancelLockRequest// API.   

This function provides a simple mechanism for canceling the lock range request of an outstanding FS_FILELOCKS call. If two threads in a process are blocked on a lock range and a cancel request is issued by another thread, both blocked threads will be released.