dlls/shell32/dragdrophelper.c

   1 /*
   2  *      file system folder
   3  *
   4  *      Copyright 1997                  Marcus Meissner
   5  *      Copyright 1998, 1999, 2002      Juergen Schmied
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <string.h>
  26
  27 #include "winbase.h"
  28 #include "winreg.h"
  29
  30 #include "objbase.h"
  31 #include "ole2.h"
  32 #include "shlguid.h"
  33
  34 #include "wine/obj_dragdrophelper.h"
  35 #include "wine/debug.h"
  36 #include "debughlp.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL (shell);
  39
  40 /***********************************************************************
  41 *   IDropTargetHelper implementation
  42 */
  43
  44 typedef struct {
  45     ICOM_VFIELD (IDropTargetHelper);
  46     DWORD ref;
  47 } IDropTargetHelperImpl;
  48
  49 static struct ICOM_VTABLE (IDropTargetHelper) vt_IDropTargetHelper;
  50
  51 #define _IUnknown_(This) (IUnknown*)&(This->lpVtbl)
  52 #define _IDropTargetHelper_(This) (IDropTargetHelper*)&(This->lpVtbl)
  53
  54 /**************************************************************************
  55 *       IDropTargetHelper_Constructor
  56 */
  57 HRESULT WINAPI IDropTargetHelper_Constructor (IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
  58 {
  59     IDropTargetHelperImpl *dth;
  60
  61     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
  62
  63     if (!ppv)
  64         return E_POINTER;
  65     if (pUnkOuter)
  66         return CLASS_E_NOAGGREGATION;
  67
  68     dth = (IDropTargetHelperImpl *) LocalAlloc (GMEM_ZEROINIT, sizeof (IDropTargetHelperImpl));
  69     if (!dth) return E_OUTOFMEMORY;
  70
  71     dth->ref = 0;
  72     ICOM_VTBL (dth) = &vt_IDropTargetHelper;
  73
  74     if (!SUCCEEDED (IUnknown_QueryInterface (_IUnknown_ (dth), riid, ppv))) {
  75         IUnknown_Release (_IUnknown_ (dth));
  76         return E_NOINTERFACE;
  77     }
  78
  79     TRACE ("--(%p)\n", dth);
  80     return S_OK;
  81 }
  82
  83 /**************************************************************************
  84  *      IDropTargetHelper_fnQueryInterface
  85  */
  86 static HRESULT WINAPI IDropTargetHelper_fnQueryInterface (IDropTargetHelper * iface, REFIID riid, LPVOID * ppvObj)
  87 {
  88     ICOM_THIS (IDropTargetHelperImpl, iface);
  89
  90     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
  91
  92     *ppvObj = NULL;
  93
  94     if (IsEqualIID (riid, &IID_IUnknown) || IsEqualIID (riid, &IID_IDropTargetHelper)) {
  95         *ppvObj = This;
  96     }
  97
  98     if (*ppvObj) {
  99         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 100         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 101         return S_OK;
 102     }
 103     FIXME ("-- Interface: E_NOINTERFACE\n");
 104     return E_NOINTERFACE;
 105 }
 106
 107 static ULONG WINAPI IDropTargetHelper_fnAddRef (IDropTargetHelper * iface)
 108 {
 109     ICOM_THIS (IDropTargetHelperImpl, iface);
 110
 111     TRACE ("(%p)->(count=%lu)\n", This, This->ref);
 112
 113     return ++(This->ref);
 114 }
 115
 116 static ULONG WINAPI IDropTargetHelper_fnRelease (IDropTargetHelper * iface)
 117 {
 118     ICOM_THIS (IDropTargetHelperImpl, iface);
 119
 120     TRACE ("(%p)->(count=%lu)\n", This, This->ref);
 121
 122     if (!--(This->ref)) {
 123         TRACE("-- destroying (%p)\n", This);
 124         LocalFree ((HLOCAL) This);
 125         return 0;
 126     }
 127     return This->ref;
 128 }
 129
 130 static HRESULT WINAPI IDropTargetHelper_fnDragEnter (
 131         IDropTargetHelper * iface,
 132         HWND hwndTarget,
 133         IDataObject* pDataObject,
 134         POINT* ppt,
 135         DWORD dwEffect)
 136 {
 137     ICOM_THIS (IDropTargetHelperImpl, iface);
 138     FIXME ("(%p)->(%p %p %p 0x%08lx)\n", This,hwndTarget, pDataObject, ppt, dwEffect);
 139     return E_NOTIMPL;
 140 }
 141
 142 static HRESULT WINAPI IDropTargetHelper_fnDragLeave (IDropTargetHelper * iface)
 143 {
 144     ICOM_THIS (IDropTargetHelperImpl, iface);
 145     FIXME ("(%p)->()\n", This);
 146     return E_NOTIMPL;
 147 }
 148
 149 static HRESULT WINAPI IDropTargetHelper_fnDragOver (IDropTargetHelper * iface, POINT* ppt, DWORD dwEffect)
 150 {
 151     ICOM_THIS (IDropTargetHelperImpl, iface);
 152     FIXME ("(%p)->(%p 0x%08lx)\n", This, ppt, dwEffect);
 153     return E_NOTIMPL;
 154 }
 155
 156 static HRESULT WINAPI IDropTargetHelper_fnDrop (IDropTargetHelper * iface, IDataObject* pDataObject, POINT* ppt, DWORD dwEffect)
 157 {
 158     ICOM_THIS (IDropTargetHelperImpl, iface);
 159     FIXME ("(%p)->(%p %p 0x%08lx)\n", This, pDataObject, ppt, dwEffect);
 160     return E_NOTIMPL;
 161 }
 162
 163 static HRESULT WINAPI IDropTargetHelper_fnShow (IDropTargetHelper * iface, BOOL fShow)
 164 {
 165     ICOM_THIS (IDropTargetHelperImpl, iface);
 166     FIXME ("(%p)->(%u)\n", This, fShow);
 167     return E_NOTIMPL;
 168 }
 169
 170 static ICOM_VTABLE (IDropTargetHelper) vt_IDropTargetHelper =
 171 {
 172         ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 173         IDropTargetHelper_fnQueryInterface,
 174         IDropTargetHelper_fnAddRef,
 175         IDropTargetHelper_fnRelease,
 176         IDropTargetHelper_fnDragEnter,
 177         IDropTargetHelper_fnDragLeave,
 178         IDropTargetHelper_fnDragOver,
 179         IDropTargetHelper_fnDrop,
 180         IDropTargetHelper_fnShow
 181 };