2 * clipboard helper functions
4 * Copyright 2000 Juergen Schmied <juergen.schmied@debitel.de>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * For copy & paste functions within contextmenus does the shell use
23 * the OLE clipboard functions in combination with dataobjects.
24 * The OLE32.DLL gets loaded with LoadLibrary
26 * - a right mousebutton-copy sets the following formats:
29 * Prefered Drop Effect
30 * Shell Object Offsets
34 * OlePrivateData (ClipboardDataObjectInterface)
42 #include "undocshell.h"
43 #include "shell32_main.h"
46 #include "wine/debug.h"
48 WINE_DEFAULT_DEBUG_CHANNEL(shell);
50 HRESULT (WINAPI *pOleInitialize)(LPVOID reserved);
51 void (WINAPI *pOleUninitialize)(void);
52 HRESULT (WINAPI *pRegisterDragDrop)(HWND hwnd, IDropTarget* pDropTarget);
53 HRESULT (WINAPI *pRevokeDragDrop)(HWND hwnd);
54 HRESULT (WINAPI *pDoDragDrop)(LPDATAOBJECT,LPDROPSOURCE,DWORD,DWORD*);
55 void (WINAPI *pReleaseStgMedium)(STGMEDIUM* pmedium);
56 HRESULT (WINAPI *pOleSetClipboard)(IDataObject* pDataObj);
57 HRESULT (WINAPI *pOleGetClipboard)(IDataObject** ppDataObj);
59 /**************************************************************************
62 * make sure OLE32.DLL is loaded
64 BOOL GetShellOle(void)
68 hShellOle32 = LoadLibraryA("ole32.dll");
71 pOleInitialize=(void*)GetProcAddress(hShellOle32,"OleInitialize");
72 pOleUninitialize=(void*)GetProcAddress(hShellOle32,"OleUninitialize");
73 pRegisterDragDrop=(void*)GetProcAddress(hShellOle32,"RegisterDragDrop");
74 pRevokeDragDrop=(void*)GetProcAddress(hShellOle32,"RevokeDragDrop");
75 pDoDragDrop=(void*)GetProcAddress(hShellOle32,"DoDragDrop");
76 pReleaseStgMedium=(void*)GetProcAddress(hShellOle32,"ReleaseStgMedium");
77 pOleSetClipboard=(void*)GetProcAddress(hShellOle32,"OleSetClipboard");
78 pOleGetClipboard=(void*)GetProcAddress(hShellOle32,"OleGetClipboard");
86 /**************************************************************************
89 * creates a CF_HDROP structure
91 HGLOBAL RenderHDROP(LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
94 int rootsize = 0,size = 0;
95 char szRootPath[MAX_PATH];
96 char szFileName[MAX_PATH];
98 DROPFILES *pDropFiles;
101 TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
103 /* get the size needed */
104 size = sizeof(DROPFILES);
106 SHGetPathFromIDListA(pidlRoot, szRootPath);
107 PathAddBackslashA(szRootPath);
108 rootsize = strlen(szRootPath);
110 for (i=0; i<cidl;i++)
112 _ILSimpleGetText(apidl[i], szFileName, MAX_PATH);
113 size += rootsize + strlen(szFileName) + 1;
118 /* Fill the structure */
119 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
120 if(!hGlobal) return hGlobal;
122 pDropFiles = (DROPFILES *)GlobalLock(hGlobal);
123 pDropFiles->pFiles = sizeof(DROPFILES);
124 pDropFiles->fWide = FALSE;
126 offset = pDropFiles->pFiles;
127 strcpy(szFileName, szRootPath);
129 for (i=0; i<cidl;i++)
132 _ILSimpleGetText(apidl[i], szFileName + rootsize, MAX_PATH - rootsize);
133 size = strlen(szFileName) + 1;
134 strcpy(((char*)pDropFiles)+offset, szFileName);
138 ((char*)pDropFiles)[offset] = 0;
139 GlobalUnlock(hGlobal);
144 HGLOBAL RenderSHELLIDLIST (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
146 int i,offset = 0, sizePidl, size;
150 TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
152 /* get the size needed */
153 size = sizeof(CIDA) + sizeof (UINT)*(cidl); /* header */
154 size += ILGetSize (pidlRoot); /* root pidl */
155 for(i=0; i<cidl; i++)
157 size += ILGetSize(apidl[i]); /* child pidls */
160 /* fill the structure */
161 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
162 if(!hGlobal) return hGlobal;
163 pcida = GlobalLock (hGlobal);
167 offset = sizeof(CIDA) + sizeof (UINT)*(cidl);
168 pcida->aoffset[0] = offset; /* first element */
169 sizePidl = ILGetSize (pidlRoot);
170 memcpy(((LPBYTE)pcida)+offset, pidlRoot, sizePidl);
173 for(i=0; i<cidl; i++) /* child pidls */
175 pcida->aoffset[i+1] = offset;
176 sizePidl = ILGetSize(apidl[i]);
177 memcpy(((LPBYTE)pcida)+offset, apidl[i], sizePidl);
181 GlobalUnlock(hGlobal);
185 HGLOBAL RenderSHELLIDLISTOFFSET (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
191 HGLOBAL RenderFILECONTENTS (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
197 HGLOBAL RenderFILEDESCRIPTOR (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
203 HGLOBAL RenderFILENAME (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
206 char szTemp[MAX_PATH], *szFileName;
209 TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
211 /* build name of first file */
212 SHGetPathFromIDListA(pidlRoot, szTemp);
213 PathAddBackslashA(szTemp);
214 len = strlen(szTemp);
215 _ILSimpleGetText(apidl[0], szTemp+len, MAX_PATH - len);
216 size = strlen(szTemp) + 1;
218 /* fill the structure */
219 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
220 if(!hGlobal) return hGlobal;
221 szFileName = (char *)GlobalLock(hGlobal);
222 GlobalUnlock(hGlobal);
226 HGLOBAL RenderPREFEREDDROPEFFECT (DWORD dwFlags)
231 TRACE("(0x%08lx)\n", dwFlags);
233 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, sizeof(DWORD));
234 if(!hGlobal) return hGlobal;
235 pdwFlag = (DWORD*)GlobalLock(hGlobal);
237 GlobalUnlock(hGlobal);
241 /**************************************************************************
244 * checks if there is something in the clipboard we can use
246 BOOL IsDataInClipboard (HWND hwnd)
250 if (OpenClipboard(hwnd))
252 if (GetOpenClipboardWindow())
254 ret = IsClipboardFormatAvailable(CF_TEXT);