Calling Windows shell menu (same as right-click in Explorer) for multiple files

Calling Windows shell menu (same as right-click in Explorer) for multiple
files

I'm trying to display a shell context menu for a file (same as when I
right-click that file in Explorer) programmatically. I've managed to do
that for a single file / folder, my code is below. Now, how can I call a
context menu for a list of files, as if I have selected a couple in
Explorer and clicked them?
bool openShellContextMenuForObject(const std::wstring &path, int xPos, int
yPos, void * parentWindow)
{
assert (parentWindow);
ITEMIDLIST * id = 0;
std::wstring windowsPath = path;
std::replace(windowsPath.begin(), windowsPath.end(), '/', '\\');
HRESULT result = SHParseDisplayName(windowsPath.c_str(), 0, &id, 0, 0);
if (!SUCCEEDED(result) || !id)
return false;
CItemIdListReleaser idReleaser (id);
IShellFolder * ifolder = 0;
LPCITEMIDLIST idChild = 0;
result = SHBindToParent(id, IID_IShellFolder, (void**)&ifolder,
&idChild);
if (!SUCCEEDED(result) || !ifolder)
return false;
CComInterfaceReleaser ifolderReleaser (ifolder);
IContextMenu * imenu = 0;
result = ifolder->GetUIObjectOf((HWND)parentWindow, 1, (const
ITEMIDLIST **)&idChild, IID_IContextMenu, 0, (void**)&imenu);
if (!SUCCEEDED(result) || !ifolder)
return false;
CComInterfaceReleaser menuReleaser(imenu);
HMENU hMenu = CreatePopupMenu();
if (!hMenu)
return false;
if (SUCCEEDED(imenu->QueryContextMenu(hMenu, 0, 1, 0x7FFF, CMF_NORMAL)))
{
int iCmd = TrackPopupMenuEx(hMenu, TPM_RETURNCMD, xPos, yPos,
(HWND)parentWindow, NULL);
if (iCmd > 0)
{
CMINVOKECOMMANDINFOEX info = { 0 };
info.cbSize = sizeof(info);
info.fMask = CMIC_MASK_UNICODE;
info.hwnd = (HWND)parentWindow;
info.lpVerb = MAKEINTRESOURCEA(iCmd - 1);
info.lpVerbW = MAKEINTRESOURCEW(iCmd - 1);
info.nShow = SW_SHOWNORMAL;
imenu->InvokeCommand((LPCMINVOKECOMMANDINFO)&info);
}
}
DestroyMenu(hMenu);
return true;
}