[SHELL32] Start Menu: Enhance context menu (#6606)

Improve Start Menu usability.
JIRA issue: CORE-19477
- Add CSIDLFromID helper function.
- Return a context menu interface at CShellMenuCallback::OnGetContextMenu.
FIXME: CSIDL_CONTROLS, CSIDL_NETWORK, and CSIDL_PRINTERS context menu
wrongly open My Computer.

dll/win32/shell32/shellmenu/CStartMenu.cpp

@@ -247,10 +247,43 @@ class CShellMenuCallback :
                 if (FAILED_UNEXPECTEDLY(hr))
                     return hr;
 
-                hr = psfDestop->BindToObject(pidlStartMenu, NULL, IID_PPV_ARG(IShellFolder, &psfStartMenu));
+        hr = E_FAIL;
+        switch (psmd->uId)
+        {
+            case IDM_PROGRAMS:
+            {
+                hr = AddStartMenuItems(pShellMenu, CSIDL_PROGRAMS, SMSET_TOP, m_psfPrograms);
+                break;
+            }
+            case IDM_FAVORITES:
+            case IDM_MYDOCUMENTS:
+            case IDM_MYPICTURES:
+            case IDM_CONTROLPANEL:
+            case IDM_NETWORKCONNECTIONS:
+            case IDM_PRINTERSANDFAXES:
+            {
+                hr = AddStartMenuItems(pShellMenu, CSIDLFromID(psmd->uId), SMSET_TOP);
+                break;
+            }
+            case IDM_DOCUMENTS:
+            {
+                HMENU hMenu = CreateRecentMenu();
+                if (hMenu == NULL)
+                    ERR("CreateRecentMenu failed\n");
+
+                hr = pShellMenu->SetMenu(hMenu, NULL, SMSET_BOTTOM);
                 if (FAILED_UNEXPECTEDLY(hr))
                     return hr;
+
+                hr = AddStartMenuItems(pShellMenu, CSIDL_RECENT, SMSET_BOTTOM);
+                break;
             }
+            case IDM_SETTINGS:
+            {
+                MENUITEMINFOW mii = { sizeof(mii), MIIM_SUBMENU };
+                if (GetMenuItemInfoW(psmd->hmenu, psmd->uId, FALSE, &mii))
+                {
+                    UpdateSettingsMenu(mii.hSubMenu);
 
             hr = pShellMenu->SetShellFolder(psfStartMenu, NULL, NULL, dwFlags);
             if (FAILED_UNEXPECTEDLY(hr))
@@ -271,17 +304,43 @@ class CShellMenuCallback :
         return pShellMenu->QueryInterface(iid, pv);
     }
 
-    HRESULT OnGetContextMenu(LPSMDATA psmd, REFIID iid, void ** pv)
+    INT CSIDLFromID(UINT uId) const
     {
-        if (psmd->uId == IDM_PROGRAMS ||
-            psmd->uId == IDM_CONTROLPANEL ||
-            psmd->uId == IDM_NETWORKCONNECTIONS ||
-            psmd->uId == IDM_PRINTERSANDFAXES)
+        switch (uId)
         {
-            //UNIMPLEMENTED
+            case IDM_PROGRAMS: return CSIDL_PROGRAMS;
+            case IDM_FAVORITES: return CSIDL_FAVORITES;
+            case IDM_DOCUMENTS: return CSIDL_RECENT;
+            case IDM_MYDOCUMENTS: return CSIDL_MYDOCUMENTS;
+            case IDM_MYPICTURES: return CSIDL_MYPICTURES;
+            case IDM_CONTROLPANEL: return CSIDL_CONTROLS;
+            case IDM_NETWORKCONNECTIONS: return CSIDL_NETWORK;
+            case IDM_PRINTERSANDFAXES: return CSIDL_PRINTERS;
+            default: return 0;
         }
+    }
 
-        return S_FALSE;
+    HRESULT OnGetContextMenu(LPSMDATA psmd, REFIID iid, void ** pv)
+    {
+        INT csidl = CSIDLFromID(psmd->uId);
+        if (!csidl)
+            return S_FALSE;
+
+        TRACE("csidl: 0x%X\n", csidl);
+
+        if (csidl == CSIDL_CONTROLS || csidl == CSIDL_NETWORK || csidl == CSIDL_PRINTERS)
+            FIXME("This CSIDL %d wrongly opens My Computer. CORE-19477\n", csidl);
+
+        CComHeapPtr<ITEMIDLIST> pidl;
+        SHGetSpecialFolderLocation(NULL, csidl, &pidl);
+
+        CComPtr<IShellFolder> pSF;
+        LPCITEMIDLIST pidlChild = NULL;
+        HRESULT hr = SHBindToParent(pidl, IID_IShellFolder, (void**)&pSF, &pidlChild);
+        if (FAILED(hr))
+            return hr;
+
+        return pSF->GetUIObjectOf(NULL, 1, &pidlChild, IID_IContextMenu, NULL, pv);
     }
 
     HRESULT OnGetObject(LPSMDATA psmd, REFIID iid, void ** pv)