dll/win32/netshell/classfactory.c

   1 #include <precomp.h>
   2
   3 typedef struct
   4 {
   5     const IClassFactoryVtbl    *lpVtbl;
   6     LONG                       ref;
   7     CLSID                      *rclsid;
   8     LPFNCREATEINSTANCE         lpfnCI;
   9     const IID *                riidInst;
  10 } IClassFactoryImpl;
  11
  12
  13 static
  14 HRESULT
  15 WINAPI
  16 IClassFactory_fnQueryInterface(
  17     LPCLASSFACTORY iface,
  18     REFIID riid,
  19     LPVOID *ppvObj)
  20 {
  21     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  22
  23     *ppvObj = NULL;
  24     if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory))
  25     {
  26         *ppvObj = This;
  27         InterlockedIncrement(&This->ref);
  28         return S_OK;
  29     }
  30     return E_NOINTERFACE;
  31 }
  32
  33 static
  34 ULONG
  35 WINAPI
  36 IClassFactory_fnAddRef(
  37     LPCLASSFACTORY iface)
  38 {
  39     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  40     ULONG refCount = InterlockedIncrement(&This->ref);
  41
  42     return refCount;
  43 }
  44
  45 static
  46 ULONG
  47 WINAPI
  48 IClassFactory_fnRelease(
  49     LPCLASSFACTORY iface)
  50 {
  51     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  52     ULONG refCount = InterlockedDecrement(&This->ref);
  53
  54     if (!refCount)
  55     {
  56         CoTaskMemFree(This);
  57         return 0;
  58     }
  59     return refCount;
  60 }
  61
  62 static
  63 HRESULT
  64 WINAPI
  65 IClassFactory_fnCreateInstance(
  66     LPCLASSFACTORY iface,
  67     LPUNKNOWN pUnkOuter,
  68     REFIID riid,
  69     LPVOID *ppvObject)
  70 {
  71     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  72
  73     *ppvObject = NULL;
  74
  75     if ( This->riidInst==NULL || IsEqualCLSID(riid, This->riidInst) || IsEqualCLSID(riid, &IID_IUnknown) )
  76     {
  77         return This->lpfnCI(pUnkOuter, riid, ppvObject);
  78     }
  79
  80     return E_NOINTERFACE;
  81 }
  82
  83 static
  84 HRESULT
  85 WINAPI IClassFactory_fnLockServer(
  86     LPCLASSFACTORY iface,
  87     BOOL fLock)
  88 {
  89     //IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  90     return E_NOTIMPL;
  91 }
  92
  93
  94 static const IClassFactoryVtbl dclfvt =
  95 {
  96     IClassFactory_fnQueryInterface,
  97     IClassFactory_fnAddRef,
  98     IClassFactory_fnRelease,
  99     IClassFactory_fnCreateInstance,
 100     IClassFactory_fnLockServer
 101 };
 102
 103
 104 IClassFactory *
 105 IClassFactory_fnConstructor(
 106     LPFNCREATEINSTANCE lpfnCI,
 107     PLONG pcRefDll,
 108     REFIID riidInst)
 109 {
 110     IClassFactoryImpl* lpclf;
 111
 112     lpclf = CoTaskMemAlloc(sizeof(IClassFactoryImpl));
 113     lpclf->ref = 1;
 114     lpclf->lpVtbl = &dclfvt;
 115     lpclf->lpfnCI = lpfnCI;
 116
 117     if (pcRefDll)
 118         InterlockedIncrement(pcRefDll);
 119     lpclf->riidInst = riidInst;
 120
 121     return (LPCLASSFACTORY)lpclf;
 122 }
 123
 124