漂亮界面的软件应该有漂亮的菜单，大家对 Windows XP 的开始菜单肯定不陌生吧，那种菜单独具风格。于是去研究了一下，发现其实它并不是真CMenu也不是其派生类，分析其结构发现其主要是两个 ListView、一个ToolBar、一个 Button 组成的。-beautiful interface software should have a beautiful menu, Members of the Windows XP Start menu certainly no stranger t

这个派生的TreeCtrl类使你能够在自己的程序中方便地加入浏览目录、文件的功能，就像Windows Explore一样。缺陷:重画时有闪烁。总的说来不错-TreeCtrl derivatives of this type allows you to the process to facilitate the accession to browse directories, file functions, like Windows Explore the same. Shortcomings :

We propose a simple and effective method for detecting view- and scale-independent ridge-valley lines defined via first- and secondorder curvature derivatives on shapes approximated by dense triangle meshes.-We propose a simple and effective me

BP 网络通过微积分中的链法则来计算偏导数。这里我给出训练 BP 网络的公 式，详细的推导过程请见参考文献-BP network through calculus chain of rules to calculate partial derivatives. Here I give BP network training, the formula detailed derivation see References