If you look at the various types of requests that come to a device, most of them involve reading or writing data. On occasion, however, an application needs to communicate “out of band” with the driver.

Chap9
.....\dirs
.....\evwait
.....\......\dirs
.....\......\evwait.htm
.....\......\sys
.....\......\...\Control.cpp
.....\......\...\Driver.h
.....\......\...\Driver.rc
.....\......\...\DriverEntry.cpp
.....\......\...\evwait.dsp
.....\......\...\evwait.inf
.....\......\...\Ioctls.h
.....\......\...\makefile
.....\......\...\objchk_wxp_x86
.....\......\...\..............\i386
.....\......\...\..............\....\evwait.NMS
.....\......\...\..............\....\evwait.pdb
.....\......\...\..............\....\evwait.sys
.....\......\...\ReadWrite.cpp
.....\......\...\sources
.....\......\...\stddcls.cpp
.....\......\...\stddcls.h
.....\......\test
.....\......\....\Debug
.....\......\....\.....\test.exe
.....\......\....\ReadMe.txt
.....\......\....\StdAfx.cpp
.....\......\....\StdAfx.h
.....\......\....\test.cpp
.....\......\....\test.dsp
.....\ioctl
.....\.....\dirs
.....\.....\ioctl.htm
.....\.....\sys
.....\.....\...\control.cpp
.....\.....\...\Driver.h
.....\.....\...\Driver.rc
.....\.....\...\DriverEntry.cpp
.....\.....\...\ioctl.dsp
.....\.....\...\ioctl.inf
.....\.....\...\Ioctls.h
.....\.....\...\makefile
.....\.....\...\objchk_wxp_x86
.....\.....\...\..............\i386
.....\.....\...\..............\....\ioctl.NMS
.....\.....\...\..............\....\ioctl.pdb
.....\.....\...\..............\....\ioctl.sys
.....\.....\...\ReadWrite.cpp
.....\.....\...\sources
.....\.....\...\stddcls.cpp
.....\.....\...\stddcls.h
.....\.....\test
.....\.....\....\Debug
.....\.....\....\.....\test.exe
.....\.....\....\ReadMe.txt
.....\.....\....\StdAfx.cpp
.....\.....\....\StdAfx.h
.....\.....\....\test.cpp
.....\.....\....\test.dsp
.....\notify
.....\......\dirs
.....\......\notify.htm
.....\......\sys
.....\......\...\Control.cpp
.....\......\...\Driver.h
.....\......\...\driver.rc
.....\......\...\DriverEntry.cpp
.....\......\...\Ioctls.h
.....\......\...\makefile
.....\......\...\notify.dsp
.....\......\...\notify.inf
.....\......\...\objchk_wxp_x86
.....\......\...\..............\i386
.....\......\...\..............\....\notify.NMS
.....\......\...\..............\....\notify.pdb
.....\......\...\..............\....\notify.sys
.....\......\...\ReadWrite.cpp
.....\......\...\sources
.....\......\...\stddcls.cpp
.....\......\...\stddcls.h
.....\......\...\version.h
.....\......\test
.....\......\....\Debug
.....\......\....\.....\test.exe
.....\......\....\ReadMe.txt
.....\......\....\StdAfx.cpp
.....\......\....\StdAfx.h
.....\......\....\Test.cpp
.....\......\....\test.dsp

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