获得系统特殊路径函数SHGetSpecialFolderLocation()

#include "shlobj.h" //包含头文件

WINSHELLAPI HRESULT WINAPI SHGetSpecialFolderLocation (HWND hwndOwner, int nFolder,LPITEMIDLIST * ppidl); //函数声明

hwndOwner: 指定了"所有者窗口",在调用这个函数是可能出現的对话框或信息框.

nFolder: 是一个整数id，決定哪个目录是待查找目录,它的取值可能是

CSIDL_BITBUCKET                    回收站

CSIDL_CONTROLS                    控制面板
CSIDL_DESKTOP                      Windows桌面desktop;

CSIDL_DESKTOPDIRECTORY   desktop的目录；

CSIDL_DRIVES                            我的电脑

CSIDL_FONTS                             字体目录

CSIDL_NETHOOD                       网上邻居

CSIDL_NETWORK                       网上邻居virtual folder

CSIDL_PERSONAL                      我的文档

CSIDL_PRINTERS                        打印机

CSIDL_PROGRAMS                    程序组

CSIDL_RECENT                          最近打开文档

CSIDL_SENDTO                          发送到菜单项

CSIDL_STARTMENU                    快启菜单

CSIDL_STARTUP                         启动目录

CSIDL_TEMPLATES                     临时文档

ppidl: pidl地址. SHGetSpecialFolderLocation把地址写到pidl.

示例代码VC++

LPITEMIDLIST pidl;

LPMALLOC pShellMalloc;

char szDir[200];

if(SUCCEEDED(SHGetMalloc(&pShellMalloc)))

{
if(SUCCEEDED(SHGetSpecialFolderLocation(NULL,CSIDL_DESKTOP,&pidl))) {
// 如果成功返回true
SHGetPathFromIDList(pidl, szDir);
pShellMalloc->Free(pidl);
}
pShellMalloc->Release();

}

::MessageBox (NULL,szDir,"Path",MB_OK);

LPITEMIDLIST pidl;
TCHAR szPath [MAX_PATH];
if(SUCCEEDED( SHGetSpecialFolderLocation ( NULL, CSIDL_FAVORITES, &pidl )))
{
if ( SHGetPathFromIDList ( pidl, szPath )) 
{
CString sDisplayName;
SHFILEINFO    sfi;
ZeroMemory(&sfi,sizeof(sfi));
UINT uFlags = SHGFI_PIDL | SHGFI_DISPLAYNAME;
SHGetFileInfo((LPCTSTR)pidl, 0, &sfi, sizeof(SHFILEINFO), uFlags);
sDisplayName = sfi.szDisplayName;
CString szDisplay;
szDisplay.Format(_T(" %s  /n  /n %s"),szPath, sDisplayName);
GetDlgItem(IDC_STATIC)->SetWindowText(szDisplay);
CoTaskMemFree(pidl);          //free the resource
}
}