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     IDropTargetHelper IDropTargetHelper_iface;
  52     LONG ref;
  53 } IDropTargetHelperImpl;
  54
  55 static const IDropTargetHelperVtbl vt_IDropTargetHelper;
  56
  57 static inline IDropTargetHelperImpl *impl_from_IDropTargetHelper(IDropTargetHelper *iface)
  58 {
  59     return CONTAINING_RECORD(iface, IDropTargetHelperImpl, IDropTargetHelper_iface);
  60 }
  61
  62 /**************************************************************************
  63 *       IDropTargetHelper_Constructor
  64 */
  65 HRESULT WINAPI IDropTargetHelper_Constructor (IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
  66 {
  67     IDropTargetHelperImpl *dth;
  68
  69     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
  70
  71     if (!ppv)
  72         return E_POINTER;
  73     if (pUnkOuter)
  74         return CLASS_E_NOAGGREGATION;
  75
  76     dth = LocalAlloc (LMEM_ZEROINIT, sizeof (IDropTargetHelperImpl));
  77     if (!dth) return E_OUTOFMEMORY;
  78
  79     dth->ref = 0;
  80     dth->IDropTargetHelper_iface.lpVtbl = &vt_IDropTargetHelper;
  81
  82     if (FAILED (IDropTargetHelper_QueryInterface (&dth->IDropTargetHelper_iface, riid, ppv))) {
  83         LocalFree(dth);
  84         return E_NOINTERFACE;
  85     }
  86
  87     TRACE ("--(%p)\n", dth);
  88     return S_OK;
  89 }
  90
  91 /**************************************************************************
  92  *      IDropTargetHelper_fnQueryInterface
  93  */
  94 static HRESULT WINAPI IDropTargetHelper_fnQueryInterface (IDropTargetHelper * iface, REFIID riid, LPVOID * ppvObj)
  95 {
  96     IDropTargetHelperImpl *This = impl_from_IDropTargetHelper(iface);
  97
  98     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
  99
 100     *ppvObj = NULL;
 101
 102     if (IsEqualIID (riid, &IID_IUnknown) || IsEqualIID (riid, &IID_IDropTargetHelper)) {
 103         *ppvObj = &This->IDropTargetHelper_iface;
 104     }
 105
 106     if (*ppvObj) {
 107         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 108         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 109         return S_OK;
 110     }
 111     FIXME ("-- Interface: E_NOINTERFACE\n");
 112     return E_NOINTERFACE;
 113 }
 114
 115 static ULONG WINAPI IDropTargetHelper_fnAddRef (IDropTargetHelper * iface)
 116 {
 117     IDropTargetHelperImpl *This = impl_from_IDropTargetHelper(iface);
 118     ULONG refCount = InterlockedIncrement(&This->ref);
 119
 120     TRACE ("(%p)->(count=%u)\n", This, refCount - 1);
 121
 122     return refCount;
 123 }
 124
 125 static ULONG WINAPI IDropTargetHelper_fnRelease (IDropTargetHelper * iface)
 126 {
 127     IDropTargetHelperImpl *This = impl_from_IDropTargetHelper(iface);
 128     ULONG refCount = InterlockedDecrement(&This->ref);
 129
 130     TRACE ("(%p)->(count=%u)\n", This, refCount + 1);
 131
 132     if (!refCount) {
 133         TRACE ("-- destroying (%p)\n", This);
 134         LocalFree (This);
 135         return 0;
 136     }
 137     return refCount;
 138 }
 139
 140 static HRESULT WINAPI IDropTargetHelper_fnDragEnter (
 141         IDropTargetHelper * iface,
 142         HWND hwndTarget,
 143         IDataObject* pDataObject,
 144         POINT* ppt,
 145         DWORD dwEffect)
 146 {
 147     IDropTargetHelperImpl *This = impl_from_IDropTargetHelper(iface);
 148     FIXME ("(%p)->(%p %p %p 0x%08x)\n", This,hwndTarget, pDataObject, ppt, dwEffect);
 149     return E_NOTIMPL;
 150 }
 151
 152 static HRESULT WINAPI IDropTargetHelper_fnDragLeave (IDropTargetHelper * iface)
 153 {
 154     IDropTargetHelperImpl *This = impl_from_IDropTargetHelper(iface);
 155     FIXME ("(%p)->()\n", This);
 156     return E_NOTIMPL;
 157 }
 158
 159 static HRESULT WINAPI IDropTargetHelper_fnDragOver (IDropTargetHelper * iface, POINT* ppt, DWORD dwEffect)
 160 {
 161     IDropTargetHelperImpl *This = impl_from_IDropTargetHelper(iface);
 162     FIXME ("(%p)->(%p 0x%08x)\n", This, ppt, dwEffect);
 163     return E_NOTIMPL;
 164 }
 165
 166 static HRESULT WINAPI IDropTargetHelper_fnDrop (IDropTargetHelper * iface, IDataObject* pDataObject, POINT* ppt, DWORD dwEffect)
 167 {
 168     IDropTargetHelperImpl *This = impl_from_IDropTargetHelper(iface);
 169     FIXME ("(%p)->(%p %p 0x%08x)\n", This, pDataObject, ppt, dwEffect);
 170     return E_NOTIMPL;
 171 }
 172
 173 static HRESULT WINAPI IDropTargetHelper_fnShow (IDropTargetHelper * iface, BOOL fShow)
 174 {
 175     IDropTargetHelperImpl *This = impl_from_IDropTargetHelper(iface);
 176     FIXME ("(%p)->(%u)\n", This, fShow);
 177     return E_NOTIMPL;
 178 }
 179
 180 static const IDropTargetHelperVtbl vt_IDropTargetHelper =
 181 {
 182         IDropTargetHelper_fnQueryInterface,
 183         IDropTargetHelper_fnAddRef,
 184         IDropTargetHelper_fnRelease,
 185         IDropTargetHelper_fnDragEnter,
 186         IDropTargetHelper_fnDragLeave,
 187         IDropTargetHelper_fnDragOver,
 188         IDropTargetHelper_fnDrop,
 189         IDropTargetHelper_fnShow
 190 };