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)
66 static HANDLE hOle32 = NULL;
69 hOle32 = LoadLibraryA("ole32.dll");
72 pOleInitialize=(void*)GetProcAddress(hOle32,"OleInitialize");
73 pOleUninitialize=(void*)GetProcAddress(hOle32,"OleUninitialize");
74 pRegisterDragDrop=(void*)GetProcAddress(hOle32,"RegisterDragDrop");
75 pRevokeDragDrop=(void*)GetProcAddress(hOle32,"RevokeDragDrop");
76 pDoDragDrop=(void*)GetProcAddress(hOle32,"DoDragDrop");
77 pReleaseStgMedium=(void*)GetProcAddress(hOle32,"ReleaseStgMedium");
78 pOleSetClipboard=(void*)GetProcAddress(hOle32,"OleSetClipboard");
79 pOleGetClipboard=(void*)GetProcAddress(hOle32,"OleGetClipboard");
87 /**************************************************************************
90 * creates a CF_HDROP structure
92 HGLOBAL RenderHDROP(LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
95 int rootsize = 0,size = 0;
96 char szRootPath[MAX_PATH];
97 char szFileName[MAX_PATH];
99 DROPFILES *pDropFiles;
102 TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
104 /* get the size needed */
105 size = sizeof(DROPFILES);
107 SHGetPathFromIDListA(pidlRoot, szRootPath);
108 PathAddBackslashA(szRootPath);
109 rootsize = strlen(szRootPath);
111 for (i=0; i<cidl;i++)
113 _ILSimpleGetText(apidl[i], szFileName, MAX_PATH);
114 size += rootsize + strlen(szFileName) + 1;
119 /* Fill the structure */
120 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
121 if(!hGlobal) return hGlobal;
123 pDropFiles = (DROPFILES *)GlobalLock(hGlobal);
124 pDropFiles->pFiles = sizeof(DROPFILES);
125 pDropFiles->fWide = FALSE;
127 offset = pDropFiles->pFiles;
128 strcpy(szFileName, szRootPath);
130 for (i=0; i<cidl;i++)
133 _ILSimpleGetText(apidl[i], szFileName + rootsize, MAX_PATH - rootsize);
134 size = strlen(szFileName) + 1;
135 strcpy(((char*)pDropFiles)+offset, szFileName);
139 ((char*)pDropFiles)[offset] = 0;
140 GlobalUnlock(hGlobal);
145 HGLOBAL RenderSHELLIDLIST (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
148 int offset = 0, sizePidl, size;
152 TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
154 /* get the size needed */
155 size = sizeof(CIDA) + sizeof (UINT)*(cidl); /* header */
156 size += ILGetSize (pidlRoot); /* root pidl */
157 for(i=0; i<cidl; i++)
159 size += ILGetSize(apidl[i]); /* child pidls */
162 /* fill the structure */
163 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
164 if(!hGlobal) return hGlobal;
165 pcida = GlobalLock (hGlobal);
169 offset = sizeof(CIDA) + sizeof (UINT)*(cidl);
170 pcida->aoffset[0] = offset; /* first element */
171 sizePidl = ILGetSize (pidlRoot);
172 memcpy(((LPBYTE)pcida)+offset, pidlRoot, sizePidl);
175 for(i=0; i<cidl; i++) /* child pidls */
177 pcida->aoffset[i+1] = offset;
178 sizePidl = ILGetSize(apidl[i]);
179 memcpy(((LPBYTE)pcida)+offset, apidl[i], sizePidl);
183 GlobalUnlock(hGlobal);
187 HGLOBAL RenderSHELLIDLISTOFFSET (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
193 HGLOBAL RenderFILECONTENTS (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
199 HGLOBAL RenderFILEDESCRIPTOR (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
205 HGLOBAL RenderFILENAME (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
208 char szTemp[MAX_PATH], *szFileName;
211 TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
213 /* build name of first file */
214 SHGetPathFromIDListA(pidlRoot, szTemp);
215 PathAddBackslashA(szTemp);
216 len = strlen(szTemp);
217 _ILSimpleGetText(apidl[0], szTemp+len, MAX_PATH - len);
218 size = strlen(szTemp) + 1;
220 /* fill the structure */
221 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
222 if(!hGlobal) return hGlobal;
223 szFileName = (char *)GlobalLock(hGlobal);
224 GlobalUnlock(hGlobal);
228 HGLOBAL RenderPREFEREDDROPEFFECT (DWORD dwFlags)
233 TRACE("(0x%08lx)\n", dwFlags);
235 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, sizeof(DWORD));
236 if(!hGlobal) return hGlobal;
237 pdwFlag = (DWORD*)GlobalLock(hGlobal);
239 GlobalUnlock(hGlobal);
243 /**************************************************************************
246 * checks if there is something in the clipboard we can use
248 BOOL IsDataInClipboard (HWND hwnd)
252 if (OpenClipboard(hwnd))
254 if (GetOpenClipboardWindow())
256 ret = IsClipboardFormatAvailable(CF_TEXT);