VC如何使用信号量\Demo.cpp ................\Demo.dsp ................\Demo.dsw ................\Demo.h ................\Demo.ncb ................\Demo.opt ................\Demo.plg ................\Demo.rc ................\DemoDlg.cpp ................\DemoDlg.h ................\ReadMe.txt ................\res\Demo.ico ................\...\Demo.rc2 ................\resource.h ................\StdAfx.cpp ................\StdAfx.h ................\res VC如何使用信号量