directshow to achieve a simple player that can adjust the playback progress and volume defective, dependent on the decoder has been registered on the computer, if the decoder can not play

MfcDirectShow
.............\debug
.............\.....\MfcDirectShow.exe
.............\.....\MfcDirectShow.ilk
.............\.....\MfcDirectShow.pdb
.............\MfcDirectShow
.............\MfcDirectShow.ncb
.............\MfcDirectShow.sln
.............\MfcDirectShow.suo
.............\.............\Debug
.............\.............\.....\BuildLog.htm
.............\.............\.....\MfcDirectShow.exe.embed.manifest
.............\.............\.....\MfcDirectShow.exe.embed.manifest.res
.............\.............\.....\MfcDirectShow.exe.intermediate.manifest
.............\.............\.....\MfcDirectShow.obj
.............\.............\.....\MfcDirectShow.pch
.............\.............\.....\MfcDirectShow.res
.............\.............\.....\MfcDirectShowDlg.obj
.............\.............\.....\mt.dep
.............\.............\.....\stdafx.obj
.............\.............\.....\vc80.idb
.............\.............\.....\vc80.pdb
.............\.............\MfcDirectShow.aps
.............\.............\MfcDirectShow.cpp
.............\.............\MfcDirectShow.h
.............\.............\MfcDirectShow.rc
.............\.............\MfcDirectShow.vcproj
.............\.............\MfcDirectShow.vcproj.lytton-PC.lytton.user
.............\.............\MfcDirectShow.vcproj.PC-201104081701.Administrator.user
.............\.............\MfcDirectShow.vcproj.WIN-4APVN92HSI9.Administrator.user
.............\.............\MfcDirectShowDlg.cpp
.............\.............\MfcDirectShowDlg.h
.............\.............\ReadMe.txt
.............\.............\res
.............\.............\resource.h
.............\.............\...\MfcDirectShow.ico
.............\.............\...\MfcDirectShow.rc2
.............\.............\stdafx.cpp
.............\.............\stdafx.h

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