扩展实例1 会变色的按钮\HoverButton.cpp
......................\HoverButton.h
......................\HoverButtonGroup.cpp
......................\HoverButtonGroup.h
......................\HoverDlg.cpp
......................\HoverDlg.dsp
......................\HoverDlg.dsw
......................\HoverDlg.h
......................\HoverDlg.rc
......................\HoverDlgDlg.cpp
......................\HoverDlgDlg.h
......................\res\HoverDlg.ico
......................\...\HoverDlg.rc2
......................\...\rbo.bmp
......................\...\rbs.bmp
......................\...\rbu.bmp
......................\...\rbx.bmp
......................\...\rbx1.bmp
......................\resource.h
......................\StdAfx.cpp
......................\StdAfx.h
......................\res
扩展实例1 会变色的按钮