ShellWindows是什么?

SHDocVw.ShellWindows可以返回windows窗口数目

引用Microsoft Internet Controls对象

在工程中引用Microsoft Internet Controls对象，然后加入以下代码：

Dim WebCount As SHDocVwCtl.ShellWindows

Set WebCount = New SHDocVwCtl.ShellWindows

MsgBox "已经打开" & WebCount.Count & "个网页"

Windows Shell编程参考网址列表Shell NameSpace Extensions

http://www.codeproject.com/Articles/7973/An-almost-complete-Namespace-Extension-Sample

http://www.codeproject.com/Articles/11995/Tips-in-Writing-Namespace-Extensions-II-Implement

http://www.codeproject.com/Articles/13170/Tips-in-Writing-Namespace-Extension-III-Drag-and-D

http://www.codeproject.com/Articles/7973/An-almost-complete-Namespace-Extension-Sample

http://www.codeproject.com/Articles/11909/Tips-in-Writing-Namespace-Extensions-I-Implements

http://www.codeproject.com/Articles/88/Namespace-extensions-the-undocumented-Windows-Shel

http://www.codeproject.com/KB/shell/

http://blog.csdn.net/chchzh/article/details/7174490

http://www.viksoe.dk/code/all_atl.htm

http://www.viksoe.dk/code/gmail.htm

http://www.microsoft.com/msj/archive/S332.aspx

http://technet.microsoft.com/zh-cn/cc144095

http://support.microsoft.com/kb/179900/zh-cn

http://support.microsoft.com/kb/179911/zh-cn

http://www.microsoft.com/msj/0898/namespace.aspx

http://www.shellplus.com/examples/namespace-extension-mega-demo.html

Shell Extensions

http://www.codeproject.com/script/Articles/MemberArticles.aspx?amid=152

http://www.codeproject.com/Articles/830/The-Complete-Idiot-s-Guide-to-Writing-Shell-Extens

http://www.codeproject.com/Articles/441/The-Complete-Idiot-s-Guide-to-Writing-Shell-Extens

http://www.codeproject.com/Articles/445/The-Complete-Idiot-s-Guide-to-Writing-Shell-Extens

http://www.codeproject.com/Articles/448/The-Complete-Idiot-s-Guide-to-Writing-Shell-Extens

http://www.codeproject.com/Articles/449/The-Complete-Idiot-s-Guide-to-Writing-Shell-Extens

http://www.codeproject.com/Articles/485/The-Complete-Idiot-s-Guide-to-Writing-Shell-Extens

http://www.codeproject.com/Articles/711/The-Complete-Idiot-s-Guide-to-Writing-Shell-Extens

http://www.codeproject.com/Articles/722/The-Complete-Idiot-s-Guide-to-Writing-Shell-Extens

http://www.codeproject.com/Articles/797/The-Complete-Idiot-s-Guide-to-Writing-Shell-Extens