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SHGetSpecialFolderPath 一个很有用的API

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SHGetSpecialFolderPath 一个很有用的API
2007-05-15 21:38

PB取系统文件夹，有很多API，如GetSystemDirectoryA可以得到SYSTEM32系统文件夹，GetTempPathA得到临时文件夹，GetWindowsDirectoryA得到windows文件夹。这里再介绍一个有用的API － SHGetSpecialFolderPath ，这个api除了能得到以上列举的文件夹，还能得到更多的系统文件夹。

具体用法：

声明API： function ulong SHGetSpecialFolderPath(long hwndOwner,ref string lpszPath,int nFolder,boolean fCreate ) LIBRARY "shell32.dll" ALIAS FOR "SHGetSpecialFolderPathA"
Function Long GetDesktopWindow() Library 'user32.dll'

hwndOwner ：用GetDesktopWindow API取一个窗口句柄。

lpszPath：返回的路径

nFolder：标识代号

fCreate：true ：如果文件夹不存在则创建，false：不创建

lpszPath和nFolder对应关系：

nFolder	lpszPath
0	C:/Documents and Settings/当前用户/桌面
2	C:/Documents and Settings/当前用户/「开始」菜单/程序
5	C:/Documents and Settings/当前用户/My Documents
6	C:/Documents and Settings/当前用户/Favorites
7	C:/Documents and Settings/当前用户/「开始」菜单/程序/启动
8	C:/Documents and Settings/当前用户/Recent
9	C:/Documents and Settings/当前用户/SendTo
11	C:/Documents and Settings/当前用户/「开始」菜单
13	C:/Documents and Settings/当前用户/My Documents/My Music
14	C:/Documents and Settings/当前用户/My Documents/My Videos
16	C:/Documents and Settings/当前用户/桌面
19	C:/Documents and Settings/当前用户/NetHood
20	C:/WINDOWS/Fonts
21	C:/Documents and Settings/当前用户/Templates
22	C:/Documents and Settings/All Users/「开始」菜单
23	C:/Documents and Settings/All Users/「开始」菜单/程序
24	C:/Documents and Settings/All Users/「开始」菜单/程序/启动
25	C:/Documents and Settings/All Users/桌面
26	C:/Documents and Settings/当前用户/Application Data
27	C:/Documents and Settings/当前用户/PrintHood
28	C:/Documents and Settings/当前用户/Local Settings/Application Data
31	C:/Documents and Settings/All Users/Favorites
32	C:/Documents and Settings/当前用户/Local Settings/Temporary Internet Files
33	C:/Documents and Settings/当前用户/Cookies
34	C:/Documents and Settings/当前用户/Local Settings/History
35	C:/Documents and Settings/All Users/Application Data
36	C:/WINDOWS
37	C:/WINDOWS/system32
38	C:/Program Files

39	C:/Documents and Settings/当前用户/My Documents/My Pictures
40	C:/Documents and Settings/当前用户
43	C:/Program Files/Common Files
45	C:/Documents and Settings/All Users/Templates
46	C:/Documents and Settings/All Users/Documents
47	C:/Documents and Settings/All Users/「开始」菜单/程序/管理工具
48	C:/Documents and Settings/当前用户/「开始」菜单/程序/管理工具
53	C:/Documents and Settings/All Users/Documents/My Music
54	C:/Documents and Settings/All Users/Documents/My Pictures
55	C:/Documents and Settings/All Users/Documents/My Videos
56	C:/WINDOWS/resources
59	C:/Documents and Settings/当前用户/Local Settings/Application Data/Microsoft/CD Burning

函数写法：

//====================================================================
// 函数: u_fun::uf_directory_get()
//--------------------------------------------------------------------
// 描述: 取系统文件夹
//--------------------------------------------------------------------
// 参数:
// value integer ai_folder
//--------------------------------------------------------------------
// 返回: string
//--------------------------------------------------------------------
// 作者: 程宁日期: 2007.05.15
//--------------------------------------------------------------------
// 修改历史:
//
//====================================================================
string ret
long ll_null
ret=space(255)
SHGetSpecialFolderPath(GetDesktopWindow(), ret ,ai_folder,false)
return ret

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