制作MSN、QQ的消息提示窗口
2010-05-27 20:37:05 来源:WEB开发网二、QQ淡出淡出显示实现
其实用到一个API函数:AnimateWindow,下面是这个函数的一些说明:
The AnimateWindow function enables you to produce special effects when showing or hiding windows.
There are two types of animation: roll animation and slide animation. 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:
Specifies the type of animation. This parameter can be one or more of the following flags.
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
就这写这么多吧,不明白的,一看源码,二查MSDN,三请教高手。
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!
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