1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
#include "DataStoreCOM.h"
enum
{
DISP_DATASTORE_STORE,
DISP_DATASTORE_RETRIEVE,
DISP_DATASTORE_GENERATE_GUID,
};
#define CHECK_ID(str, id)\
if (CSTR_EQUAL == CompareStringW(lcid, NORM_IGNORECASE, rgszNames[i], -1, L##str, -1))\
{ rgdispid[i] = id; continue; }
HRESULT DataStoreCOM::GetIDsOfNames(REFIID riid, OLECHAR FAR* FAR* rgszNames, unsigned int cNames, LCID lcid, DISPID FAR* rgdispid)
{
bool unknowns = false;
for (unsigned int i = 0;i != cNames;i++)
{
CHECK_ID("Store", DISP_DATASTORE_STORE);
CHECK_ID("Retrieve", DISP_DATASTORE_RETRIEVE);
CHECK_ID("GenerateGUID", DISP_DATASTORE_GENERATE_GUID);
rgdispid[i] = DISPID_UNKNOWN;
unknowns = true;
}
if (unknowns)
return DISP_E_UNKNOWNNAME;
else
return S_OK;
}
HRESULT DataStoreCOM::GetTypeInfo(unsigned int itinfo, LCID lcid, ITypeInfo FAR* FAR* pptinfo)
{
return E_NOTIMPL;
}
HRESULT DataStoreCOM::GetTypeInfoCount(unsigned int FAR * pctinfo)
{
return E_NOTIMPL;
}
HRESULT DataStoreCOM::Invoke(DISPID dispid, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS FAR *pdispparams, VARIANT FAR *pvarResult, EXCEPINFO FAR * pexecinfo, unsigned int FAR *puArgErr)
{
switch (dispid)
{
case DISP_DATASTORE_GENERATE_GUID:
{
GUID guid;
UuidCreate(&guid);
wchar_t *guid_string;
UuidToStringW(&guid, (unsigned short **)&guid_string);
BSTR tag = SysAllocString(guid_string);
RpcStringFreeW((unsigned short **)&guid_string);
VariantInit(pvarResult);
V_VT(pvarResult) = VT_BSTR;
V_BSTR(pvarResult) = tag;
return S_OK;
}
case DISP_DATASTORE_STORE:
if (pdispparams->cArgs == 2)
{
GUID guid;
UuidFromStringW((unsigned short *)pdispparams->rgvarg[1].bstrVal, &guid);
SAFEARRAY *bufferArray=pdispparams->rgvarg[0].parray;
SAFEARRAY *store;
HRESULT hr = SafeArrayCopy(bufferArray, &store);
dataStore[guid]=store;
return hr;
}
else
return DISP_E_BADPARAMCOUNT;
case DISP_DATASTORE_RETRIEVE:
if (pdispparams->cArgs == 1)
{
GUID guid;
UuidFromStringW((unsigned short *)pdispparams->rgvarg[0].bstrVal, &guid);
SAFEARRAY *store = dataStore[guid];
if (store)
{
SAFEARRAY *bufferArray;
SafeArrayCopy(store, &bufferArray);
VariantInit(pvarResult);
V_VT(pvarResult) = VT_ARRAY|VT_UI1;
V_ARRAY(pvarResult) = bufferArray;
return S_OK;
}
else
return E_FAIL;
}
else
return DISP_E_BADPARAMCOUNT;
}
return DISP_E_MEMBERNOTFOUND;
}
STDMETHODIMP DataStoreCOM::QueryInterface(REFIID riid, PVOID *ppvObject)
{
if (!ppvObject)
return E_POINTER;
else if (IsEqualIID(riid, IID_IDispatch))
*ppvObject = (IDispatch *)this;
else if (IsEqualIID(riid, IID_IUnknown))
*ppvObject = this;
else
{
*ppvObject = NULL;
return E_NOINTERFACE;
}
AddRef();
return S_OK;
}
ULONG DataStoreCOM::AddRef(void)
{
return 0;
}
ULONG DataStoreCOM::Release(void)
{
return 0;
}
|
