2 * IParent implementation
4 * Copyright (c) 2006 Stefan Dösinger
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 * A universal parent interface for everything in WineD3D that doesn't have
25 #include "wine/port.h"
26 #include "wine/debug.h"
39 #include "wine/exception.h"
44 #include "ddraw_private.h"
46 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
48 /*****************************************************************************
50 *****************************************************************************/
52 /*****************************************************************************
53 * IParent::Queryinterface
55 * It can't query any interfaces, and it's not used for anything. So
56 * it just returns E_NOINTERFACE
59 * riid: guid of queried interface
60 * obj: returns a pointer to the interface
63 * This implementation always returns E_NOINTERFACE and NULL
65 *****************************************************************************/
67 IParentImpl_QueryInterface(IParent *iface,
71 TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), obj);
74 if ( IsEqualGUID( &IID_IUnknown, riid ) ||
75 IsEqualGUID( &IID_IParent, riid ) )
78 IParent_AddRef(iface);
84 /*****************************************************************************
87 * Increases the refcount
94 *****************************************************************************/
96 IParentImpl_AddRef(IParent *iface)
98 IParentImpl *This = (IParentImpl *)iface;
99 ULONG ref = InterlockedIncrement(&This->ref);
101 TRACE("(%p) : AddRef from %d\n", This, ref - 1);
107 /*****************************************************************************
110 * Releases the refcount, and destroys the object if the refcount falls to 0
111 * Also releases the child object, if destroyed. That's almost the whole sense
119 *****************************************************************************/
120 static ULONG WINAPI IParentImpl_Release(IParent *iface)
122 IParentImpl *This = (IParentImpl *)iface;
123 ULONG ref = InterlockedDecrement(&This->ref);
125 TRACE("(%p) : ReleaseRef to %d\n", This, ref);
129 TRACE("(%p) Releasing child at %p\n", This, This->child);
131 IUnknown_Release(This->child);
132 HeapFree(GetProcessHeap(), 0, This);
138 /*****************************************************************************
140 *****************************************************************************/
141 const IParentVtbl IParent_Vtbl =
143 IParentImpl_QueryInterface,