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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27
  28 #define COBJMACROS
  29
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "winreg.h"
  33 #include "wingdi.h"
  34 #include "winuser.h"
  35
  36 #include "objbase.h"
  37 #include "ole2.h"
  38 #include "shlguid.h"
  39 #include "shlobj.h"
  40
  41 #include "wine/debug.h"
  42 #include "debughlp.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL (shell);
  45
  46 /***********************************************************************
  47 *   IDropTargetHelper implementation
  48 */
  49
  50 typedef struct {
  51     const IDropTargetHelperVtbl *lpVtbl;
  52     LONG ref;
  53 } IDropTargetHelperImpl;
  54
  55 static const IDropTargetHelperVtbl vt_IDropTargetHelper;
  56
  57 #define _IUnknown_(This) (IUnknown*)&(This->lpVtbl)
  58 #define _IDropTargetHelper_(This) (IDropTargetHelper*)&(This->lpVtbl)
  59
  60 /**************************************************************************
  61 *       IDropTargetHelper_Constructor
  62 */
  63 HRESULT WINAPI IDropTargetHelper_Constructor (IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
  64 {
  65     IDropTargetHelperImpl *dth;
  66
  67     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
  68
  69     if (!ppv)
  70         return E_POINTER;
  71     if (pUnkOuter)
  72         return CLASS_E_NOAGGREGATION;
  73
  74     dth = (IDropTargetHelperImpl *) LocalAlloc (LMEM_ZEROINIT, sizeof (IDropTargetHelperImpl));
  75     if (!dth) return E_OUTOFMEMORY;
  76
  77     dth->ref = 0;
  78     dth->lpVtbl = &vt_IDropTargetHelper;
  79
  80     if (FAILED (IUnknown_QueryInterface (_IUnknown_ (dth), riid, ppv))) {
  81         IUnknown_Release (_IUnknown_ (dth));
  82         return E_NOINTERFACE;
  83     }
  84
  85     TRACE ("--(%p)\n", dth);
  86     return S_OK;
  87 }
  88
  89 /**************************************************************************
  90  *      IDropTargetHelper_fnQueryInterface
  91  */
  92 static HRESULT WINAPI IDropTargetHelper_fnQueryInterface (IDropTargetHelper * iface, REFIID riid, LPVOID * ppvObj)
  93 {
  94     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
  95
  96     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
  97
  98     *ppvObj = NULL;
  99
 100     if (IsEqualIID (riid, &IID_IUnknown) || IsEqualIID (riid, &IID_IDropTargetHelper)) {
 101         *ppvObj = This;
 102     }
 103
 104     if (*ppvObj) {
 105         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 106         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 107         return S_OK;
 108     }
 109     FIXME ("-- Interface: E_NOINTERFACE\n");
 110     return E_NOINTERFACE;
 111 }
 112
 113 static ULONG WINAPI IDropTargetHelper_fnAddRef (IDropTargetHelper * iface)
 114 {
 115     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 116     ULONG refCount = InterlockedIncrement(&This->ref);
 117
 118     TRACE ("(%p)->(count=%u)\n", This, refCount - 1);
 119
 120     return refCount;
 121 }
 122
 123 static ULONG WINAPI IDropTargetHelper_fnRelease (IDropTargetHelper * iface)
 124 {
 125     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 126     ULONG refCount = InterlockedDecrement(&This->ref);
 127
 128     TRACE ("(%p)->(count=%u)\n", This, refCount + 1);
 129
 130     if (!refCount) {
 131         TRACE("-- destroying (%p)\n", This);
 132         LocalFree ((HLOCAL) This);
 133         return 0;
 134     }
 135     return refCount;
 136 }
 137
 138 static HRESULT WINAPI IDropTargetHelper_fnDragEnter (
 139         IDropTargetHelper * iface,
 140         HWND hwndTarget,
 141         IDataObject* pDataObject,
 142         POINT* ppt,
 143         DWORD dwEffect)
 144 {
 145     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 146     FIXME ("(%p)->(%p %p %p 0x%08x)\n", This,hwndTarget, pDataObject, ppt, dwEffect);
 147     return E_NOTIMPL;
 148 }
 149
 150 static HRESULT WINAPI IDropTargetHelper_fnDragLeave (IDropTargetHelper * iface)
 151 {
 152     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 153     FIXME ("(%p)->()\n", This);
 154     return E_NOTIMPL;
 155 }
 156
 157 static HRESULT WINAPI IDropTargetHelper_fnDragOver (IDropTargetHelper * iface, POINT* ppt, DWORD dwEffect)
 158 {
 159     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 160     FIXME ("(%p)->(%p 0x%08x)\n", This, ppt, dwEffect);
 161     return E_NOTIMPL;
 162 }
 163
 164 static HRESULT WINAPI IDropTargetHelper_fnDrop (IDropTargetHelper * iface, IDataObject* pDataObject, POINT* ppt, DWORD dwEffect)
 165 {
 166     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 167     FIXME ("(%p)->(%p %p 0x%08x)\n", This, pDataObject, ppt, dwEffect);
 168     return E_NOTIMPL;
 169 }
 170
 171 static HRESULT WINAPI IDropTargetHelper_fnShow (IDropTargetHelper * iface, BOOL fShow)
 172 {
 173     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 174     FIXME ("(%p)->(%u)\n", This, fShow);
 175     return E_NOTIMPL;
 176 }
 177
 178 static const IDropTargetHelperVtbl vt_IDropTargetHelper =
 179 {
 180         IDropTargetHelper_fnQueryInterface,
 181         IDropTargetHelper_fnAddRef,
 182         IDropTargetHelper_fnRelease,
 183         IDropTargetHelper_fnDragEnter,
 184         IDropTargetHelper_fnDragLeave,
 185         IDropTargetHelper_fnDragOver,
 186         IDropTargetHelper_fnDrop,
 187         IDropTargetHelper_fnShow
 188 };