 used to determine if calls to objects in the block are across threads or internal to the calling thread. Pass this routine the handle of the object block to be checked--if the object block is a VM block, the thread for the VM file is checked rather than that for the block.</P>
<P>
If the block is run by the calling thread, the return value is <CODE>
true</CODE>
. If a different thread runs the block, the return is <CODE>
false</CODE>
 (zero).</P>
<P CLASS="refField"><STRONG>
Include:</STRONG>	object.h</P>
