1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 25 #ifndef _APNDATAOBJECT_HXX_ 26 #define _APNDATAOBJECT_HXX_ 27 28 //------------------------------------------------------------------------ 29 // deklarations 30 //------------------------------------------------------------------------ 31 32 /* 33 an APartment Neutral dataobject wrapper; this wrapper of a IDataObject 34 pointer can be used from any apartment without RPC_E_WRONG_THREAD 35 which normally occurs if an apartment tries to use an interface 36 pointer of another apartment; we use containment to hold the original 37 DataObject 38 */ 39 class CAPNDataObject : public IDataObject 40 { 41 public: 42 CAPNDataObject( IDataObjectPtr rIDataObject ); 43 ~CAPNDataObject( ); 44 45 //----------------------------------------------------------------- 46 //IUnknown interface methods 47 //----------------------------------------------------------------- 48 49 STDMETHODIMP QueryInterface(REFIID iid, LPVOID* ppvObject); 50 STDMETHODIMP_( ULONG ) AddRef( ); 51 STDMETHODIMP_( ULONG ) Release( ); 52 53 //----------------------------------------------------------------- 54 // IDataObject interface methods 55 //----------------------------------------------------------------- 56 57 STDMETHODIMP GetData( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium ); 58 STDMETHODIMP GetDataHere( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium ); 59 STDMETHODIMP QueryGetData( LPFORMATETC pFormatetc ); 60 STDMETHODIMP GetCanonicalFormatEtc( LPFORMATETC pFormatectIn, LPFORMATETC pFormatetcOut ); 61 STDMETHODIMP SetData( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium, BOOL fRelease ); 62 STDMETHODIMP EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc ); 63 STDMETHODIMP DAdvise( LPFORMATETC pFormatetc, DWORD advf, LPADVISESINK pAdvSink, DWORD* pdwConnection ); 64 STDMETHODIMP DUnadvise( DWORD dwConnection ); 65 STDMETHODIMP EnumDAdvise( LPENUMSTATDATA* ppenumAdvise ); 66 67 operator IDataObject*( ); 68 69 private: 70 HRESULT MarshalIDataObjectIntoCurrentApartment( IDataObject** ppIDataObj ); 71 72 private: 73 IDataObjectPtr m_rIDataObjectOrg; 74 HGLOBAL m_hGlobal; 75 LONG m_nRefCnt; 76 77 // prevent copy and assignment 78 private: 79 CAPNDataObject( const CAPNDataObject& theOther ); 80 CAPNDataObject& operator=( const CAPNDataObject& theOther ); 81 }; 82 83 #endif 84