void CShellContextMenu::SetObjects(const QStringList &strList)
{
// free all allocated datas
if (m_psfFolder && bDelete)
m_psfFolder->Release ();
m_psfFolder = NULL;
FreePIDLArray (m_pidlArray);
m_pidlArray = NULL;
// get IShellFolder interface of Desktop (root of shell namespace)
IShellFolder * psfDesktop = NULL;
SHGetDesktopFolder (&psfDesktop); // needed to obtain full qualified pidl
// ParseDisplayName creates a PIDL from a file system path relative to the IShellFolder interface
// but since we use the Desktop as our interface and the Desktop is the namespace root
// that means that it's a fully qualified PIDL, which is what we need
LPITEMIDLIST pidl = NULL;
psfDesktop->ParseDisplayName (NULL, 0, (LPOLESTR)strList[0].utf16(), NULL, &pidl, NULL);
// now we need the parent IShellFolder interface of pidl, and the relative PIDL to that interface
LPITEMIDLIST pidlItem = NULL; // relative pidl
SHBindToParentEx (pidl, IID_IShellFolder, (void **) &m_psfFolder, NULL);
free (pidlItem);
// get interface to IMalloc (need to free the PIDLs allocated by the shell functions)
LPMALLOC lpMalloc = NULL;
SHGetMalloc (&lpMalloc);
lpMalloc->Free (pidl);
// now we have the IShellFolder interface to the parent folder specified in the first element in strArray
// since we assume that all objects are in the same folder (as it's stated in the MSDN)
// we now have the IShellFolder interface to every objects parent folder
IShellFolder * psfFolder = NULL;
nItems = strList.size ();
for (int i = 0; i < nItems; i++)
{
pidl=0;
psfDesktop->ParseDisplayName (NULL, 0, (LPOLESTR)strList[i].utf16(), NULL, &pidl, NULL);
if (pidl)
{
m_pidlArray = (LPITEMIDLIST *) realloc (m_pidlArray, (i + 1) * sizeof (LPITEMIDLIST));
// get relative pidl via SHBindToParent
SHBindToParentEx (pidl, IID_IShellFolder, (void **) &psfFolder, (LPCITEMIDLIST *) &pidlItem);
m_pidlArray[i] = CopyPIDL (pidlItem); // copy relative pidl to pidlArray
free (pidlItem);
lpMalloc->Free (pidl); // free pidl allocated by ParseDisplayName
psfFolder->Release ();
}
}
lpMalloc->Release ();
psfDesktop->Release ();
bDelete = TRUE; // indicates that m_psfFolder should be deleted by CShellContextMenu
}
HRESULT CContextMenuHelper::SHGetContextMenu(std::vector<LPCTSTR> files) {
HRESULT hr;
IMalloc *pm = NULL;
IShellFolder *pDesktop = NULL;
IShellFolder *psf = NULL;
LPITEMIDLIST pidl = NULL;
WCHAR fwname[MAX_PATH + 1];
if (SUCCEEDED(hr = SHGetMalloc(&pm))) {
if (SUCCEEDED(hr = SHGetDesktopFolder(&pDesktop))) {
std::vector<LPITEMIDLIST> pidls;
IShellFolder* psfFolder = NULL;
for (UINT i = 0; SUCCEEDED(hr) && i < files.size(); i++) {
LPCTSTR lpszFilePath = files[i];
ULONG cch;
ULONG attrs;
// Convert to Unicode
memset(fwname, L'\0', (MAX_PATH + 1) * sizeof(WCHAR));
MultiByteToWideChar(CP_THREAD_ACP, 0, lpszFilePath, -1, fwname, MAX_PATH);
if (SUCCEEDED(hr = pDesktop->ParseDisplayName(m_hWnd, NULL, fwname, &cch, &pidl, &attrs))) {
LPITEMIDLIST pidlItem = NULL;
if (SUCCEEDED(hr = SHBindToParentEx((LPCITEMIDLIST)pidl, IID_IShellFolder, (void **)&psf, (LPCITEMIDLIST *) &pidlItem, pDesktop, pm))) {
pidls.push_back(CopyPIDL(pidlItem, pm));
pm->Free(pidlItem);
if (psfFolder == NULL) {
// Remember first folder and we wiil show menu for this one
// All other folder will be ignored
psfFolder = psf;
} else {
psf->Release();
}
}
pm->Free(pidl);
}
}
if (SUCCEEDED(hr) && psfFolder != NULL) {
hr = psfFolder->GetUIObjectOf(m_hWnd, pidls.size(), const_cast<LPCITEMIDLIST*>(pidls.begin()), IID_IContextMenu, NULL, (void**)&m_lpcm);
psfFolder->Release();
}
FreeItemIDList(pidls, pm);
pDesktop->Release();
}
pm->Release();
}
return hr;
}
void CShellContextMenu::SetObjects(CString &strArray)
{
// free all allocated datas
if (m_psfFolder && bDelete)
m_psfFolder->Release ();
m_psfFolder = NULL;
FreePIDLArray (m_pidlArray);
m_pidlArray = NULL;
// get IShellFolder interface of Desktop (root of shell namespace)
IShellFolder * psfDesktop = NULL;
SHGetDesktopFolder (&psfDesktop); // needed to obtain full qualified pidl
// ParseDisplayName creates a PIDL from a file system path relative to the IShellFolder interface
// but since we use the Desktop as our interface and the Desktop is the namespace root
// that means that it's a fully qualified PIDL, which is what we need
LPITEMIDLIST pidl = NULL;
#ifndef _UNICODE
OLECHAR * olePath = (OLECHAR *) calloc (strArray.GetLength () + 1, sizeof (OLECHAR));
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, (LPCSTR)strArray, -1, olePath, strArray.GetLength () + 1);
psfDesktop->ParseDisplayName (NULL, 0, olePath, NULL, &pidl, NULL);
free (olePath);
#else
psfDesktop->ParseDisplayName (NULL, 0, strArray.GetBuffer (0), NULL, &pidl, NULL);
#endif
// now we need the parent IShellFolder interface of pidl, and the relative PIDL to that interface
LPITEMIDLIST pidlItem = NULL; // relative pidl
SHBindToParentEx (pidl, IID_IShellFolder, (void **) &m_psfFolder, NULL);
free (pidlItem);
// get interface to IMalloc (need to free the PIDLs allocated by the shell functions)
LPMALLOC lpMalloc = NULL;
SHGetMalloc (&lpMalloc);
lpMalloc->Free (pidl);
// now we have the IShellFolder interface to the parent folder specified in the first element in strArray
// since we assume that all objects are in the same folder (as it's stated in the MSDN)
// we now have the IShellFolder interface to every objects parent folder
IShellFolder * psfFolder = NULL;
nItems = 1;
for (int i = 0; i < nItems; i++)
{
#ifndef _UNICODE
olePath = (OLECHAR *) calloc (strArray.GetLength () + 1, sizeof (OLECHAR));
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, (strArray), -1, olePath, strArray.GetLength () + 1);
psfDesktop->ParseDisplayName (NULL, 0, olePath, NULL, &pidl, NULL);
free (olePath);
#else
psfDesktop->ParseDisplayName (NULL, 0, strArray.GetBuffer (0), NULL, &pidl, NULL);
#endif
m_pidlArray = (LPITEMIDLIST *) realloc (m_pidlArray, (i + 1) * sizeof (LPITEMIDLIST));
// get relative pidl via SHBindToParent
SHBindToParentEx (pidl, IID_IShellFolder, (void **) &psfFolder, (LPCITEMIDLIST *) &pidlItem);
m_pidlArray[i] = CopyPIDL (pidlItem); // copy relative pidl to pidlArray
free (pidlItem);
lpMalloc->Free (pidl); // free pidl allocated by ParseDisplayName
psfFolder->Release ();
}
lpMalloc->Release ();
psfDesktop->Release ();
bDelete = TRUE; // indicates that m_psfFolder should be deleted by CShellContextMenu
}
