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 #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     IDropTargetHelperVtbl *lpVtbl;
  52     DWORD ref;
  53 } IDropTargetHelperImpl;
  54
  55 static struct 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 (GMEM_ZEROINIT, sizeof (IDropTargetHelperImpl));
  75     if (!dth) return E_OUTOFMEMORY;
  76
  77     dth->ref = 0;
  78     dth->lpVtbl = &vt_IDropTargetHelper;
  79
  80     if (!SUCCEEDED (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
 117     TRACE ("(%p)->(count=%lu)\n", This, This->ref);
 118
 119     return ++(This->ref);
 120 }
 121
 122 static ULONG WINAPI IDropTargetHelper_fnRelease (IDropTargetHelper * iface)
 123 {
 124     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 125
 126     TRACE ("(%p)->(count=%lu)\n", This, This->ref);
 127
 128     if (!--(This->ref)) {
 129         TRACE("-- destroying (%p)\n", This);
 130         LocalFree ((HLOCAL) This);
 131         return 0;
 132     }
 133     return This->ref;
 134 }
 135
 136 static HRESULT WINAPI IDropTargetHelper_fnDragEnter (
 137         IDropTargetHelper * iface,
 138         HWND hwndTarget,
 139         IDataObject* pDataObject,
 140         POINT* ppt,
 141         DWORD dwEffect)
 142 {
 143     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 144     FIXME ("(%p)->(%p %p %p 0x%08lx)\n", This,hwndTarget, pDataObject, ppt, dwEffect);
 145     return E_NOTIMPL;
 146 }
 147
 148 static HRESULT WINAPI IDropTargetHelper_fnDragLeave (IDropTargetHelper * iface)
 149 {
 150     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 151     FIXME ("(%p)->()\n", This);
 152     return E_NOTIMPL;
 153 }
 154
 155 static HRESULT WINAPI IDropTargetHelper_fnDragOver (IDropTargetHelper * iface, POINT* ppt, DWORD dwEffect)
 156 {
 157     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 158     FIXME ("(%p)->(%p 0x%08lx)\n", This, ppt, dwEffect);
 159     return E_NOTIMPL;
 160 }
 161
 162 static HRESULT WINAPI IDropTargetHelper_fnDrop (IDropTargetHelper * iface, IDataObject* pDataObject, POINT* ppt, DWORD dwEffect)
 163 {
 164     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 165     FIXME ("(%p)->(%p %p 0x%08lx)\n", This, pDataObject, ppt, dwEffect);
 166     return E_NOTIMPL;
 167 }
 168
 169 static HRESULT WINAPI IDropTargetHelper_fnShow (IDropTargetHelper * iface, BOOL fShow)
 170 {
 171     IDropTargetHelperImpl *This = (IDropTargetHelperImpl *)iface;
 172     FIXME ("(%p)->(%u)\n", This, fShow);
 173     return E_NOTIMPL;
 174 }
 175
 176 static IDropTargetHelperVtbl vt_IDropTargetHelper =
 177 {
 178         IDropTargetHelper_fnQueryInterface,
 179         IDropTargetHelper_fnAddRef,
 180         IDropTargetHelper_fnRelease,
 181         IDropTargetHelper_fnDragEnter,
 182         IDropTargetHelper_fnDragLeave,
 183         IDropTargetHelper_fnDragOver,
 184         IDropTargetHelper_fnDrop,
 185         IDropTargetHelper_fnShow
 186 };