1 // MyCom.h
2
3 #ifndef __MY_COM_H
4 #define __MY_COM_H
5
6 #include "MyWindows.h"
7 #include "NewHandler.h"
8
9 #ifndef RINOK
10 #define RINOK(x) { HRESULT __result_ = (x); if (__result_ != S_OK) return __result_; }
11 #endif
12
13 template <class T>
14 class CMyComPtr
15 {
16 T* _p;
17 public:
CMyComPtr()18 CMyComPtr(): _p(NULL) {}
throw()19 CMyComPtr(T* p) throw() { if ((_p = p) != NULL) p->AddRef(); }
throw()20 CMyComPtr(const CMyComPtr<T>& lp) throw() { if ((_p = lp._p) != NULL) _p->AddRef(); }
~CMyComPtr()21 ~CMyComPtr() { if (_p) _p->Release(); }
Release()22 void Release() { if (_p) { _p->Release(); _p = NULL; } }
23 operator T*() const { return (T*)_p; }
24 // T& operator*() const { return *_p; }
25 T** operator&() { return &_p; }
26 T* operator->() const { return _p; }
27 T* operator=(T* p)
28 {
29 if (p)
30 p->AddRef();
31 if (_p)
32 _p->Release();
33 _p = p;
34 return p;
35 }
36 T* operator=(const CMyComPtr<T>& lp) { return (*this = lp._p); }
37 bool operator!() const { return (_p == NULL); }
38 // bool operator==(T* pT) const { return _p == pT; }
Attach(T * p2)39 void Attach(T* p2)
40 {
41 Release();
42 _p = p2;
43 }
Detach()44 T* Detach()
45 {
46 T* pt = _p;
47 _p = NULL;
48 return pt;
49 }
50 #ifdef _WIN32
51 HRESULT CoCreateInstance(REFCLSID rclsid, REFIID iid, LPUNKNOWN pUnkOuter = NULL, DWORD dwClsContext = CLSCTX_ALL)
52 {
53 return ::CoCreateInstance(rclsid, pUnkOuter, dwClsContext, iid, (void**)&_p);
54 }
55 #endif
56 /*
57 HRESULT CoCreateInstance(LPCOLESTR szProgID, LPUNKNOWN pUnkOuter = NULL, DWORD dwClsContext = CLSCTX_ALL)
58 {
59 CLSID clsid;
60 HRESULT hr = CLSIDFromProgID(szProgID, &clsid);
61 ATLASSERT(_p == NULL);
62 if (SUCCEEDED(hr))
63 hr = ::CoCreateInstance(clsid, pUnkOuter, dwClsContext, __uuidof(T), (void**)&_p);
64 return hr;
65 }
66 */
67 template <class Q>
QueryInterface(REFGUID iid,Q ** pp)68 HRESULT QueryInterface(REFGUID iid, Q** pp) const throw()
69 {
70 return _p->QueryInterface(iid, (void**)pp);
71 }
72 };
73
74 //////////////////////////////////////////////////////////
75
StringToBstr(LPCOLESTR src,BSTR * bstr)76 inline HRESULT StringToBstr(LPCOLESTR src, BSTR *bstr)
77 {
78 *bstr = ::SysAllocString(src);
79 return (*bstr) ? S_OK : E_OUTOFMEMORY;
80 }
81
82 class CMyComBSTR
83 {
84 BSTR m_str;
85
86 public:
CMyComBSTR()87 CMyComBSTR(): m_str(NULL) {}
~CMyComBSTR()88 ~CMyComBSTR() { ::SysFreeString(m_str); }
89 BSTR* operator&() { return &m_str; }
LPCOLESTR()90 operator LPCOLESTR() const { return m_str; }
91 // operator bool() const { return m_str != NULL; }
92 // bool operator!() const { return m_str == NULL; }
93 private:
94 // operator BSTR() const { return m_str; }
95
CMyComBSTR(LPCOLESTR src)96 CMyComBSTR(LPCOLESTR src) { m_str = ::SysAllocString(src); }
97 // CMyComBSTR(int nSize) { m_str = ::SysAllocStringLen(NULL, nSize); }
98 // CMyComBSTR(int nSize, LPCOLESTR sz) { m_str = ::SysAllocStringLen(sz, nSize); }
CMyComBSTR(const CMyComBSTR & src)99 CMyComBSTR(const CMyComBSTR& src) { m_str = src.MyCopy(); }
100
101 /*
102 CMyComBSTR(REFGUID src)
103 {
104 LPOLESTR szGuid;
105 StringFromCLSID(src, &szGuid);
106 m_str = ::SysAllocString(szGuid);
107 CoTaskMemFree(szGuid);
108 }
109 */
110
111 CMyComBSTR& operator=(const CMyComBSTR& src)
112 {
113 if (m_str != src.m_str)
114 {
115 if (m_str)
116 ::SysFreeString(m_str);
117 m_str = src.MyCopy();
118 }
119 return *this;
120 }
121
122 CMyComBSTR& operator=(LPCOLESTR src)
123 {
124 ::SysFreeString(m_str);
125 m_str = ::SysAllocString(src);
126 return *this;
127 }
128
Len()129 unsigned Len() const { return ::SysStringLen(m_str); }
130
MyCopy()131 BSTR MyCopy() const
132 {
133 // We don't support Byte BSTRs here
134 return ::SysAllocStringLen(m_str, ::SysStringLen(m_str));
135 /*
136 UINT byteLen = ::SysStringByteLen(m_str);
137 BSTR res = ::SysAllocStringByteLen(NULL, byteLen);
138 if (res && byteLen != 0 && m_str)
139 memcpy(res, m_str, byteLen);
140 return res;
141 */
142 }
143
144 /*
145 void Attach(BSTR src) { m_str = src; }
146 BSTR Detach()
147 {
148 BSTR s = m_str;
149 m_str = NULL;
150 return s;
151 }
152 */
153
Empty()154 void Empty()
155 {
156 ::SysFreeString(m_str);
157 m_str = NULL;
158 }
159 };
160
161 //////////////////////////////////////////////////////////
162
163 class CMyUnknownImp
164 {
165 public:
166 ULONG __m_RefCount;
CMyUnknownImp()167 CMyUnknownImp(): __m_RefCount(0) {}
168
169 // virtual ~CMyUnknownImp() {};
170 };
171
172 #define MY_QUERYINTERFACE_BEGIN STDMETHOD(QueryInterface) \
173 (REFGUID iid, void **outObject) throw() { *outObject = NULL;
174
175 #define MY_QUERYINTERFACE_ENTRY(i) else if (iid == IID_ ## i) \
176 { *outObject = (void *)(i *)this; }
177
178 #define MY_QUERYINTERFACE_ENTRY_UNKNOWN(i) if (iid == IID_IUnknown) \
179 { *outObject = (void *)(IUnknown *)(i *)this; }
180
181 #define MY_QUERYINTERFACE_BEGIN2(i) MY_QUERYINTERFACE_BEGIN \
182 MY_QUERYINTERFACE_ENTRY_UNKNOWN(i) \
183 MY_QUERYINTERFACE_ENTRY(i)
184
185 #define MY_QUERYINTERFACE_END else return E_NOINTERFACE; ++__m_RefCount; /* AddRef(); */ return S_OK; }
186
187 #define MY_ADDREF_RELEASE \
188 STDMETHOD_(ULONG, AddRef)() throw() { return ++__m_RefCount; } \
189 STDMETHOD_(ULONG, Release)() { if (--__m_RefCount != 0) \
190 return __m_RefCount; delete this; return 0; }
191
192 #define MY_UNKNOWN_IMP_SPEC(i) \
193 MY_QUERYINTERFACE_BEGIN \
194 i \
195 MY_QUERYINTERFACE_END \
196 MY_ADDREF_RELEASE
197
198
199 #define MY_UNKNOWN_IMP MY_QUERYINTERFACE_BEGIN \
200 MY_QUERYINTERFACE_ENTRY_UNKNOWN(IUnknown) \
201 MY_QUERYINTERFACE_END \
202 MY_ADDREF_RELEASE
203
204 #define MY_UNKNOWN_IMP1(i) MY_UNKNOWN_IMP_SPEC( \
205 MY_QUERYINTERFACE_ENTRY_UNKNOWN(i) \
206 MY_QUERYINTERFACE_ENTRY(i) \
207 )
208
209 #define MY_UNKNOWN_IMP2(i1, i2) MY_UNKNOWN_IMP_SPEC( \
210 MY_QUERYINTERFACE_ENTRY_UNKNOWN(i1) \
211 MY_QUERYINTERFACE_ENTRY(i1) \
212 MY_QUERYINTERFACE_ENTRY(i2) \
213 )
214
215 #define MY_UNKNOWN_IMP3(i1, i2, i3) MY_UNKNOWN_IMP_SPEC( \
216 MY_QUERYINTERFACE_ENTRY_UNKNOWN(i1) \
217 MY_QUERYINTERFACE_ENTRY(i1) \
218 MY_QUERYINTERFACE_ENTRY(i2) \
219 MY_QUERYINTERFACE_ENTRY(i3) \
220 )
221
222 #define MY_UNKNOWN_IMP4(i1, i2, i3, i4) MY_UNKNOWN_IMP_SPEC( \
223 MY_QUERYINTERFACE_ENTRY_UNKNOWN(i1) \
224 MY_QUERYINTERFACE_ENTRY(i1) \
225 MY_QUERYINTERFACE_ENTRY(i2) \
226 MY_QUERYINTERFACE_ENTRY(i3) \
227 MY_QUERYINTERFACE_ENTRY(i4) \
228 )
229
230 #define MY_UNKNOWN_IMP5(i1, i2, i3, i4, i5) MY_UNKNOWN_IMP_SPEC( \
231 MY_QUERYINTERFACE_ENTRY_UNKNOWN(i1) \
232 MY_QUERYINTERFACE_ENTRY(i1) \
233 MY_QUERYINTERFACE_ENTRY(i2) \
234 MY_QUERYINTERFACE_ENTRY(i3) \
235 MY_QUERYINTERFACE_ENTRY(i4) \
236 MY_QUERYINTERFACE_ENTRY(i5) \
237 )
238
239 #define MY_UNKNOWN_IMP6(i1, i2, i3, i4, i5, i6) MY_UNKNOWN_IMP_SPEC( \
240 MY_QUERYINTERFACE_ENTRY_UNKNOWN(i1) \
241 MY_QUERYINTERFACE_ENTRY(i1) \
242 MY_QUERYINTERFACE_ENTRY(i2) \
243 MY_QUERYINTERFACE_ENTRY(i3) \
244 MY_QUERYINTERFACE_ENTRY(i4) \
245 MY_QUERYINTERFACE_ENTRY(i5) \
246 MY_QUERYINTERFACE_ENTRY(i6) \
247 )
248
249 #define MY_UNKNOWN_IMP7(i1, i2, i3, i4, i5, i6, i7) MY_UNKNOWN_IMP_SPEC( \
250 MY_QUERYINTERFACE_ENTRY_UNKNOWN(i1) \
251 MY_QUERYINTERFACE_ENTRY(i1) \
252 MY_QUERYINTERFACE_ENTRY(i2) \
253 MY_QUERYINTERFACE_ENTRY(i3) \
254 MY_QUERYINTERFACE_ENTRY(i4) \
255 MY_QUERYINTERFACE_ENTRY(i5) \
256 MY_QUERYINTERFACE_ENTRY(i6) \
257 MY_QUERYINTERFACE_ENTRY(i7) \
258 )
259
260 const HRESULT k_My_HRESULT_WritingWasCut = 0x20000010;
261
262 #endif
263