介绍一个CButton的派生类CLinkButton，用此派生类制作的按钮具有以下特点：

1、按钮的外观类似静态控件类CStatic 产生的对象。

2、当鼠标的光标移到按钮上，但并未按下时，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。

3、当按钮按下时有立体感（凹凸）。-introduced a CButton the derived classes CLinkButton using this type derivative produced buttons with the following characteristics : 1, buttons similar to the appearance of the static control type CStatic the target. 2, when the mouse button to move the cursor, but have not pressed, the cursor changes shape, font change shape; Button similar application of the tools and menu button on the flat results. 3, when the button is pressed at the three dimensional (embossing).