其实用到一个API函数：AnimateWindow,下面是这个函数的一些说明：
| BOOL AnimateWindow( HWND hwnd, // handle to the window to animate DWORD dwTime, // duration of animation DWORD dwFlags // animation type ); |
上面的函数前两个参数一看就明白，不用说了，最后一个参数dwFlags设置动画窗口的样式：
各种标志说明：
| 标志 | 说明 |
| AW_SLIDE | Uses slide animation. By default, roll animation is used. This flag is ignored when used with the AW_CENTER flag. |
| AW_ACTIVATE | Activates the window. Do not use this flag with AW_HIDE. |
| AW_BLEND | Uses a fade effect. This flag can be used only if hwnd is a top-level window. |
| AW_HIDE | Hides the window. By default, the window is shown. |
| AW_CENTER | Makes the window appear to collapse inward if the AW_HIDE flag is used or expand outward if the AW_HIDE flag is not used. |
| AW_HOR_POSITIVE | Animate the window from left to right. This flag can be used with roll or slide animation. It is ignored when used with the AW_CENTER flag. |
| AW_HOR_NEGATIVE | Animate the window from right to left. This flag can be used with roll or slide animation. It is ignored when used with the AW_CENTER flag. |
| AW_VER_POSITIVE | Animate the window from top to bottom. This flag can be used with roll or slide animation. It is ignored when used with the AW_CENTER flag. |
| AW_VER_NEGATIVE | Animate the window from bottom to top. This flag can be used with roll or slide animation. It is ignored when used with the AW_CENTER flag. |
以上内容是从MSDN中摘录的，要淡入淡出的效果的话，用到AW_BELND。
三、控制窗口显示的代码
| CMainFrame::OnCreate(…) //... AnimateWindow(GetSafeHwnd(),1000,AW_CENTER|AW_BLEND); //… } |
四、关闭的代码
| CMainFrame::OnClose(..) { AnimateWindow(GetSafeHwnd(),1000,AW_HIDE|AW_CENTER|AW_BLEND); } |
其实AnimateWindow只是利用了windows本身的方法，如果您要更加有个性的窗口效果，那就得多做写些代码了，一分辛苦，一分收获吧
五、结束语
其实就MSN的提示窗口来说，如果要从使用复杂一点的背景和效果，那么还有刷新屏幕的问题，应做到无闪刷新.由于时间苍促，不足之处必然有之，同时以上代码也参考了一部分以前 VCKBASE 技术文档，在此表示感谢！
如果有问题，欢迎交流！共同进步！