[SHELL32] Initial SendTo implementation (#2021)

This PR will realize SendTo feature. Initially, there is no file in SendTo folder (displayed as "(None)"). If you added some shortcut files, then SendTo shows some menu items.
- Copy, Move, and Link are working.
- Added icons.
CORE-12562

dll/win32/shell32/CSendToMenu.h

@@ -0,0 +1,99 @@
+/*
+ * provides new shell item service
+ *
+ * Copyright 2019 Katayama Hirofumi MZ.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef _SHV_ITEM_SENDTO_H_
+#define _SHV_ITEM_SENDTO_H_
+
+extern "C" const GUID CLSID_SendToMenu;
+
+class CSendToMenu :
+    public CComCoClass<CSendToMenu, &CLSID_SendToMenu>,
+    public CComObjectRootEx<CComMultiThreadModelNoCS>,
+    public IObjectWithSite,
+    public IContextMenu3,
+    public IShellExtInit
+{
+private:
+    struct SENDTO_ITEM
+    {
+        LPITEMIDLIST pidlChild;
+        LPWSTR pszText;
+        HICON hIcon;
+        SENDTO_ITEM *pNext;
+    };
+
+    HMENU m_hSubMenu;
+    SENDTO_ITEM *m_pItems;
+    UINT m_idCmdFirst;
+
+    CComPtr<IUnknown> m_pSite;
+    CComPtr<IShellFolder> m_pDesktop;
+    CComPtr<IShellFolder> m_pSendTo;
+    CComPtr<IDataObject> m_pDataObject;
+
+    BOOL LoadAllItems(HWND hwnd);
+    void UnloadItem(SENDTO_ITEM *pItem);
+    void UnloadAllItems();
+
+    UINT InsertSendToItems(HMENU hMenu, UINT idFirst, UINT idMenu);
+
+    SENDTO_ITEM *FindItemFromIdOffset(UINT IdOffset);
+    HRESULT DoSendToItem(SENDTO_ITEM *pItem, LPCMINVOKECOMMANDINFO lpici);
+
+    HRESULT DoDrop(IDataObject *pDataObject, IDropTarget *pDropTarget);
+    IShellFolder *GetSpecialFolder(HWND hwnd, int csidl, LPITEMIDLIST *ppidl = NULL);
+    HRESULT GetUIObjectFromPidl(HWND hwnd, LPITEMIDLIST pidl, REFIID riid, LPVOID *ppvOut);
+
+public:
+    CSendToMenu();
+    ~CSendToMenu();
+
+    // IObjectWithSite
+    STDMETHODIMP SetSite(IUnknown *pUnkSite);
+    STDMETHODIMP GetSite(REFIID riid, void **ppvSite);
+
+    // IContextMenu
+    STDMETHODIMP QueryContextMenu(HMENU hMenu, UINT indexMenu, UINT idCmdFirst, UINT idCmdLast, UINT uFlags);
+    STDMETHODIMP InvokeCommand(LPCMINVOKECOMMANDINFO lpcmi);
+    STDMETHODIMP GetCommandString(UINT_PTR idCommand, UINT uFlags, UINT *lpReserved, LPSTR lpszName, UINT uMaxNameLen);
+
+    // IContextMenu3
+    STDMETHODIMP HandleMenuMsg2(UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT *plResult);
+
+    // IContextMenu2
+    STDMETHODIMP HandleMenuMsg(UINT uMsg, WPARAM wParam, LPARAM lParam);
+
+    // IShellExtInit
+    STDMETHODIMP Initialize(PCIDLIST_ABSOLUTE pidlFolder, IDataObject *pdtobj, HKEY hkeyProgID);
+
+    DECLARE_REGISTRY_RESOURCEID(IDR_SENDTOMENU)
+    DECLARE_NOT_AGGREGATABLE(CSendToMenu)
+    DECLARE_PROTECT_FINAL_CONSTRUCT()
+
+    BEGIN_COM_MAP(CSendToMenu)
+        COM_INTERFACE_ENTRY_IID(IID_IObjectWithSite, IObjectWithSite)
+        COM_INTERFACE_ENTRY_IID(IID_IContextMenu3, IContextMenu3)
+        COM_INTERFACE_ENTRY_IID(IID_IContextMenu2, IContextMenu2)
+        COM_INTERFACE_ENTRY_IID(IID_IContextMenu, IContextMenu)
+        COM_INTERFACE_ENTRY_IID(IID_IShellExtInit, IShellExtInit)
+    END_COM_MAP()
+};
+
+#endif /* _SHV_ITEM_SENDTO_H_ */