h6. [[FilterManager]] h6(. » [[FilterManager SWI Calls|SWI Calls]] h6((. » Filter_DeRegisterCopyFilter h2. Filter_DeRegisterCopyFilter h5. (SWI &42647) |_<^. Entry | | |<^. R0 |<^. Pointer to zero terminated filter name| |<^. R1 |<^. Address of [[RectangleCopy Filter Code]]| |<^. R2 |<^. Value to be passed to R12 | |_<^. Exit | |<. All registers preserved| h4. Use The purpose of this call is to remove a [[Wimp_BlockCopy]] filter from the list. h4. Notes All registers must be the same as those passed to [[Filter_RegisterCopyFilter]]. h4. See also * [[Filter_RegisterCopyFilter]]