VOID RtlUnwind( IN PVOID TargetFrame OPTIONAL, IN PVOID TargetIp OPTIONAL, IN PEXCEPTION_RECORD ExceptionRecord OPTIONAL, IN PVOID ReturnValue ); Routine Description: This function initiates an unwind of procedure call frames. The machine state at the time of the call to unwind is captured in a context record and the unwinding flag is set in the exception flags of the exception record. If the TargetFrame parameter is not specified, then the exit unwind flag is also set in the exception flags of the exception record. A backward scan through the procedure call frames is then performed to find the target of the unwind operation. As each frame is encounter, the PC where control left the corresponding function is determined and used to lookup exception handler information in the runtime function table built by the linker. If the respective routine has an exception handler, then the handler is called. N.B. This routine is provided for backward compatibility with release 1. Arguments: TargetFrame - Supplies an optional pointer to the call frame that is the target of the unwind. If this parameter is not specified, then an exit unwind is performed. TargetIp - Supplies an optional instruction address that specifies the continuation address of the unwind. This address is ignored if the target frame parameter is not specified. ExceptionRecord - Supplies an optional pointer to an exception record. ReturnValue - Supplies a value that is to be placed in the integer function return register just before continuing execution. Return Value: None.