[c++] browseforfolder.txt

看看吧,很好的东西,

#include "shfolder.h"
CString BrowseForFolder(HWND hWnd, LPCSTR lpszTitle, UINT nFlags)
{
    // We're going to use the shell to display a 
    // "Choose Directory" dialog box for the user.
    CString strResult = "";
  
    LPMALLOC lpMalloc;
    
    if (::SHGetMalloc(&lpMalloc) != NOERROR)
    {
        // failed to get allocator  
        return strResult; 
    }

    char szBuffer[_MAX_PATH];
    char szDisplayName[_MAX_PATH];

    BROWSEINFO browseInfo;
    browseInfo.hwndOwner = hWnd;
    // set root at Desktop
    browseInfo.pidlRoot = NULL; 
    browseInfo.pszDisplayName = szDisplayName;
    browseInfo.lpszTitle = lpszTitle;
    browseInfo.ulFlags = nFlags;
    browseInfo.lpfn = NULL;
    browseInfo.lParam = 0;
    
    LPITEMIDLIST lpItemIDList;

    if ((lpItemIDList = ::SHBrowseForFolder(&browseInfo)) != NULL)
    {
        // Get the path of the selected folder from the item ID list.
        if (::SHGetPathFromIDList(lpItemIDList, szBuffer))
        {
            // At this point, szBuffer contains the path the user chose.
            if (szBuffer[0] == '\0')
            {
                // SHGetPathFromIDList failed, or SHBrowseForFolder failed.
                AfxMessageBox("Failed to get directory", MB_ICONSTOP|MB_OK);
                return strResult;
            }
     
            // We have a path in szBuffer!
            strResult = szBuffer;
            return strResult;
        }
        else
        {
            // The thing referred to by lpItemIDList 
            // might not have been a file system object.
            // For whatever reason, SHGetPathFromIDList didn't work!
            AfxMessageBox("Failed to get directory", MB_ICONSTOP|MB_OK);
            return strResult; // strResult is empty 
        }
        lpMalloc->Free(lpItemIDList);
        lpMalloc->Release();      
    }
    return strResult;
}


//然后这样使用:
CString strDir = BrowseForFolder(m_hWnd, "Select a directory:", BIF_RETURNONLYFSDIRS);
if (!strDir.IsEmpty())
{
    GetDlgItem(IDC_HOMEDIRECTORY)->SetWindowText(strDir);
}