用VC6扩展CButton类制作风格独特的按钮： 光标改变形状，字体改变形状；按钮类似应用在工具条和菜单上的扁平钮效果-CButton type used VC6 to expand the production of unique button: the cursor changes shape to change the shape of the font button similar to the application of tools and menu button on the