C++ MFC create IShellItem from CLSID (GUID) - c++

Question

I have to create a ShellItem to Windows Help and Windows Run...
I have this
Help and Support {2559a1f1-21d7-11d4-bdaf-00c04f60b9f0}
Run {2559a1f3-21d7-11d4-bdaf-00c04f60b9f0}
from http://www.sevenforums.com/tutorials/110919-clsid-key-list-windows-7-a.html
I've tried
IShellFolder* desk = NULL;
HRESULT hr =SHGetDesktopFolder(&desk);
LPITEMIDLIST pidl2=NULL;
ULONG cbEaten;
DWORD dwAttribs = 0 ;
hr = desk->ParseDisplayName(NULL,
NULL,
L"::{2559A1F1-21D7-11D4-BDAF-00C04F60B9F0}",
&cbEaten, // This can be NULL
&pidl2,
&dwAttribs);
It returns OK but Null as pidl2
could you guys give me some help?

Answer 1

ParseDisplayName should be able to parse it if you pass "shell:::{2559a1f3-21d7-11d4-bdaf-00c04f60b9f0}" but I guess that is not really what you want.
ParseDisplayName is able to parse some ::{clsid} paths but I think it is restricted to a very limited set of CSIDL_* special folders. SHSimpleIDListFromPath was able to parse it.
If you really want to parse it with ParseDisplayName you can try to emulate SHSimpleIDListFromPath:
class EmptyFileSystemBindData : public IFileSystemBindData {
public:
STDMETHODIMP QueryInterface(REFIID riid, void **ppv)
{
if (riid == IID_IUnknown || riid == IID_IFileSystemBindData) {
*ppv = static_cast<IUnknown*>(this);
AddRef();
return S_OK;
}
*ppv = NULL; return E_NOINTERFACE;
}
STDMETHODIMP_(ULONG) AddRef() { return 2; }
STDMETHODIMP_(ULONG) Release() { return 1; }
STDMETHODIMP SetFindData(const WIN32_FIND_DATAW *pfd)
{
return S_OK;
}
STDMETHODIMP GetFindData(WIN32_FIND_DATAW *pfd)
{
ZeroMemory(pfd,sizeof(WIN32_FIND_DATAW));
return S_OK;
}
};
LPITEMIDLIST pidl2=NULL;
HRESULT hr;
IShellFolder*psf;
IBindCtx*pbc;
hr = CreateBindCtx(0,&pbc);
EmptyFileSystemBindData efsbd;
if (SUCCEEDED(hr))
{
BIND_OPTS bo = {sizeof(bo)};
bo.grfMode = STGM_CREATE;
hr = pbc->RegisterObjectParam(STR_FILE_SYS_BIND_DATA,&efsbd);
if (SUCCEEDED(hr) && 0==pbc->SetBindOptions(&bo))
{
hr = SHGetDesktopFolder(&psf);
if (SUCCEEDED(hr))
{
hr = psf->ParseDisplayName(0,pbc,L"::{2559a1f3-21d7-11d4-bdaf-00c04f60b9f0}",0,&pidl2,0);
if (SUCCEEDED(hr))
{
OutputDebugStringA("parsed ok\n");
ILFree(pidl2);
}
psf->Release();
}
}
pbc->Release();
}