获取文件路径

 //此函数得到所选文件的路径
BOOL GetDirectoryPath(
LPTSTR szPathBuffer,
DWORD dwBufferSize,
HWND hWnd = NULL,
LPCTSTR szTitle = _T("选择一个文件夹"))
{
//定义文件夹的路径

//定义指向IMalloc的指针
    LPMALLOC  pMalloc;
    if(SHGetMalloc(&pMalloc) != NOERROR)
return FALSE;

    TCHAR szDisplayName[_MAX_PATH];
    TCHAR szBuffer[_MAX_PATH];
    BROWSEINFO BrowseInfo;
    BrowseInfo.hwndOwner = hWnd;

    BrowseInfo.pidlRoot = NULL;
    BrowseInfo.pszDisplayName = szDisplayName;
    BrowseInfo.lpszTitle = szTitle;
    BrowseInfo.ulFlags = BIF_RETURNFSANCESTORS | BIF_RETURNONLYFSDIRS;
    BrowseInfo.lpfn = NULL;
    BrowseInfo.lParam = 0;
    LPITEMIDLIST lpItemIDList;
    if((lpItemIDList = SHBrowseForFolder(&BrowseInfo)) != NULL)
    {
//得到
        if(SHGetPathFromIDList(lpItemIDList,szBuffer))
        {
            if(szBuffer[0] == _T('\0'))return FALSE;
if(!szPathBuffer)return FALSE;
_tcscpy_s(szPathBuffer,dwBufferSize,szBuffer);
            return TRUE;
        }
        else
        {
            return FALSE;
        }
        pMalloc->Free(lpItemIDList);
        pMalloc->Release();
    }
    return FALSE;
}