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