| 1 | /*
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| 2 | * An implementation of IUnknown.
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| 3 | *
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| 4 | * hidenori@a2.ctktv.ne.jp
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| 5 | */
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| 6 |
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| 7 | #include "config.h"
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| 8 |
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| 9 | #include "windef.h"
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| 10 | #include "winerror.h"
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| 11 | #include "wine/obj_base.h"
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| 12 |
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| 13 | #include "debugtools.h"
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| 14 | DEFAULT_DEBUG_CHANNEL(quartz);
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| 15 |
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| 16 | #include "quartz_private.h"
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| 17 | #include "iunk.h"
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| 18 |
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| 19 |
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| 20 | static HRESULT WINAPI
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| 21 | IUnknown_fnQueryInterface(IUnknown* iface,REFIID riid,LPVOID *ppobj)
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| 22 | {
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| 23 | ICOM_THIS(QUARTZ_IUnkImpl,iface);
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| 24 | size_t ofs;
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| 25 | DWORD dwIndex;
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| 26 |
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| 27 | TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppobj);
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| 28 |
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| 29 | if ( ppobj == NULL )
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| 30 | return E_POINTER;
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| 31 | *ppobj = NULL;
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| 32 |
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| 33 | ofs = 0;
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| 34 | for ( dwIndex = 0; dwIndex < This->dwEntries; dwIndex++ )
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| 35 | {
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| 36 | if ( IsEqualGUID( This->pEntries[dwIndex].piid, riid ) )
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| 37 | {
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| 38 | ofs = This->pEntries[dwIndex].ofsVTPtr;
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| 39 | break;
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| 40 | }
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| 41 | }
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| 42 |
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| 43 | if ( dwIndex == This->dwEntries )
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| 44 | {
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| 45 | if ( !IsEqualGUID( &IID_IUnknown, riid ) )
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| 46 | {
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| 47 | TRACE("unknown interface: %s\n",debugstr_guid(riid));
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| 48 | return E_NOINTERFACE;
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| 49 | }
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| 50 | }
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| 51 |
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| 52 | *ppobj = (LPVOID)(((char*)This) + ofs);
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| 53 | IUnknown_AddRef(iface);
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| 54 |
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| 55 | return S_OK;
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| 56 | }
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| 57 |
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| 58 | static ULONG WINAPI
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| 59 | IUnknown_fnAddRef(IUnknown* iface)
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| 60 | {
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| 61 | ICOM_THIS(QUARTZ_IUnkImpl,iface);
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| 62 |
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| 63 | TRACE("(%p)->()\n",This);
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| 64 |
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| 65 | return ++(This->ref);
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| 66 | }
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| 67 |
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| 68 | static ULONG WINAPI
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| 69 | IUnknown_fnRelease(IUnknown* iface)
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| 70 | {
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| 71 | ICOM_THIS(QUARTZ_IUnkImpl,iface);
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| 72 |
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| 73 | TRACE("(%p)->()\n",This);
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| 74 | if ( (--(This->ref)) > 0 )
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| 75 | return This->ref;
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| 76 |
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| 77 | QUARTZ_FreeObj(This);
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| 78 |
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| 79 | return 0;
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| 80 | }
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| 81 |
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| 82 | static ICOM_VTABLE(IUnknown) iunknown =
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| 83 | {
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| 84 | ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
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| 85 | /* IUnknown fields */
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| 86 | IUnknown_fnQueryInterface,
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| 87 | IUnknown_fnAddRef,
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| 88 | IUnknown_fnRelease,
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| 89 | };
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| 90 |
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| 91 |
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| 92 | void QUARTZ_IUnkInit( QUARTZ_IUnkImpl* pImpl )
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| 93 | {
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| 94 | TRACE("(%p)\n",pImpl);
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| 95 |
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| 96 | ICOM_VTBL(pImpl) = &iunknown;
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| 97 | pImpl->pEntries = NULL;
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| 98 | pImpl->dwEntries = 0;
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| 99 | pImpl->ref = 1;
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| 100 | }
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