rc (BOOL) - returns

The following values may be returned:

TRUE

Context was successfully destroyed, or context was bound to a window.
FALSE
Error occured.
If hgc is currently bound to a window, pglDestroyContext will return without destroying hgc. A current context can be unbound from the currently bound window by calling pglMakeCurrent (hab,NULL,None). pglMakeCurrent(hab,NULL,None).