Show wpp tarce log in traceview

After build the driver, we could use  tracelog / traceview to log/show the trace infomation.
1: input *.ctl (Control Guid) file.  that we define WPP_CONTROL_GUIDS  in trace.h  and at the same time
   create a ctl file include 1 line :  guid CtlGuid
2: input  *.tmf files.
   using tracepdb  to create tmf file , -c option create tmc file also.
tracepdb -i D:\driveout\accessch.sys -r D:\driverout -p D:\driverout\tmf -v -c
tracepdb -i D:\WFSample\accessch\out\Win7Debug\x86\accessch.sys -r D:\WFSample\accessch\out -p D:\WFSample\accessch\out\tmf -v -c
3 using tracefmt to display etl as txt.
tracefmt D:\driveout\l.etl -i D:\driveout\accessch.sys -r D:\driveout -p D:\driveout -o D:\driveout\t.txt -v