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 const GUID IID_IParent = {0xc20e4c88, 0x74e7, 0x4940, {0xba, 0x9f, 0x2e, 0x32, 0x3f, 0x9d, 0xc9, 0x81}};
50 /*****************************************************************************
52 *****************************************************************************/
54 /*****************************************************************************
55 * IParent::Queryinterface
57 * It can't query any interfaces, and it's not used for anything. So
58 * it just returns E_NOINTERFACE
61 * riid: guid of queried interface
62 * obj: returns a pointer to the interface
65 * This implementation always returns E_NOINTERFACE and NULL
67 *****************************************************************************/
69 IParentImpl_QueryInterface(IParent *iface,
73 ICOM_THIS_FROM(IParentImpl, IParent, iface);
74 TRACE("(%p)->(%s,%p)\n", This, debugstr_guid(riid), obj);
77 if ( IsEqualGUID( &IID_IUnknown, riid ) ||
78 IsEqualGUID( &IID_IParent, riid ) )
80 *obj = ICOM_INTERFACE(This, IParent);
81 IParent_AddRef(ICOM_INTERFACE(This, IParent));
87 /*****************************************************************************
90 * Increases the refcount
97 *****************************************************************************/
99 IParentImpl_AddRef(IParent *iface)
101 ICOM_THIS_FROM(IParentImpl, IParent, iface);
102 ULONG ref = InterlockedIncrement(&This->ref);
104 TRACE("(%p) : AddRef from %d\n", This, ref - 1);
110 /*****************************************************************************
113 * Releases the refcount, and destroys the object if the refcount falls to 0
114 * Also releases the child object, if destroyed. That's almost the whole sense
122 *****************************************************************************/
124 IParentImpl_Release(IParent *iface)
126 ICOM_THIS_FROM(IParentImpl, IParent, iface);
127 ULONG ref = InterlockedDecrement(&This->ref);
129 TRACE("(%p) : ReleaseRef to %d\n", This, ref);
133 TRACE("(%p) Releasing child at %p\n", This, This->child);
135 IUnknown_Release(This->child);
136 HeapFree(GetProcessHeap(), 0, This);
142 /*****************************************************************************
144 *****************************************************************************/
145 const IParentVtbl IParent_Vtbl =
147 IParentImpl_QueryInterface,