如何使用滑块 ............\Demo ............\....\Demo.cpp ............\....\Demo.dsp ............\....\Demo.dsw ............\....\Demo.h ............\....\Demo.plg ............\....\Demo.rc ............\....\DemoDlg.cpp ............\....\DemoDlg.h ............\....\ReadMe.txt ............\....\res ............\....\resource.h ............\....\...\Demo.ico ............\....\...\Demo.rc2 ............\....\StdAfx.cpp ............\....\StdAfx.h