1 /* 2 * file system folder 3 * 4 * Copyright 1997 Marcus Meissner 5 * Copyright 1998, 1999, 2002 Juergen Schmied 6 * Copyright 2009 Andrew Hill 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with this library; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA 21 */ 22 23 #ifndef _DRAGDROPHELPER_H_ 24 #define _DRAGDROPHELPER_H_ 25 26 class CDropTargetHelper : 27 public CComCoClass<CDropTargetHelper, &CLSID_DragDropHelper>, 28 public CComObjectRootEx<CComMultiThreadModelNoCS>, 29 public IDragSourceHelper, 30 public IDropTargetHelper 31 { 32 private: 33 public: 34 CDropTargetHelper(); 35 ~CDropTargetHelper(); 36 37 virtual HRESULT WINAPI InitializeFromBitmap(LPSHDRAGIMAGE pshdi, IDataObject *pDataObject); 38 virtual HRESULT WINAPI InitializeFromWindow(HWND hwnd, POINT *ppt, IDataObject *pDataObject); 39 40 STDMETHOD(DragEnter)(HWND hwndTarget, IDataObject* pDataObject, POINT* ppt, DWORD dwEffect) override; 41 STDMETHOD(DragLeave)() override; 42 STDMETHOD(DragOver)(POINT *ppt, DWORD dwEffect) override; 43 STDMETHOD(Drop)(IDataObject* pDataObject, POINT* ppt, DWORD dwEffect) override; 44 STDMETHOD(Show)(BOOL fShow) override; 45 46 DECLARE_REGISTRY_RESOURCEID(IDR_DRAGDROPHELPER) 47 DECLARE_NOT_AGGREGATABLE(CDropTargetHelper) 48 49 DECLARE_PROTECT_FINAL_CONSTRUCT() 50 51 BEGIN_COM_MAP(CDropTargetHelper) 52 COM_INTERFACE_ENTRY_IID(IID_IDragSourceHelper, IDragSourceHelper) 53 COM_INTERFACE_ENTRY_IID(IID_IDropTargetHelper, IDropTargetHelper) 54 END_COM_MAP() 55 }; 56 57 #endif /* _DRAGDROPHELPER_H_ */ 58