2 * clipboard helper functions
4 * Copyright 2000 Juergen Schmied <juergen.schmied@debitel.de>
6 * For copy & paste functions within contextmenus does the shell use
7 * the OLE clipboard functions in combination with dataobjects.
8 * The OLE32.DLL gets loaded with LoadLibrary
10 * - a right mousebutton-copy sets the following formats:
13 * Prefered Drop Effect
14 * Shell Object Offsets
18 * OlePrivateData (ClipboardDataObjectInterface)
24 #include "debugtools.h"
27 #include "wine/undocshell.h"
28 #include "shell32_main.h"
29 #include "shell.h" /* DROPFILESTRUCT */
31 DEFAULT_DEBUG_CHANNEL(shell)
33 static int refClipCount = 0;
34 static HINSTANCE hShellOle32 = 0;
36 /**************************************************************************
41 void InitShellOle(void)
45 /**************************************************************************
50 void FreeShellOle(void)
55 FreeLibrary(hShellOle32);
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");
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 LPDROPFILESTRUCT pDropFiles;
102 TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
104 /* get the size needed */
105 size = sizeof(DROPFILESTRUCT);
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 = (LPDROPFILESTRUCT)GlobalLock(hGlobal);
124 pDropFiles->lSize = sizeof(DROPFILESTRUCT);
125 pDropFiles->fWideChar = FALSE;
127 offset = pDropFiles->lSize;
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 lstrcpyA(((char*)pDropFiles)+offset, szFileName);
139 ((char*)pDropFiles)[offset] = 0;
140 GlobalUnlock(hGlobal);
145 HGLOBAL RenderSHELLIDLIST (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
147 int i,offset = 0, sizePidl, size;
151 TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
153 /* get the size needed */
154 size = sizeof(CIDA) + sizeof (UINT)*(cidl); /* header */
155 size += ILGetSize (pidlRoot); /* root pidl */
156 for(i=0; i<cidl; i++)
158 size += ILGetSize(apidl[i]); /* child pidls */
161 /* fill the structure */
162 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
163 if(!hGlobal) return hGlobal;
164 pcida = GlobalLock (hGlobal);
168 offset = sizeof(CIDA) + sizeof (UINT)*(cidl);
169 pcida->aoffset[0] = offset; /* first element */
170 sizePidl = ILGetSize (pidlRoot);
171 memcpy(((LPBYTE)pcida)+offset, pidlRoot, sizePidl);
174 for(i=0; i<cidl; i++) /* child pidls */
176 pcida->aoffset[i+1] = offset;
177 sizePidl = ILGetSize(apidl[i]);
178 memcpy(((LPBYTE)pcida)+offset, apidl[i], sizePidl);
182 GlobalUnlock(hGlobal);
186 HGLOBAL RenderSHELLIDLISTOFFSET (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
192 HGLOBAL RenderFILECONTENTS (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
198 HGLOBAL RenderFILEDESCRIPTOR (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
204 HGLOBAL RenderFILENAME (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
207 char szTemp[MAX_PATH], *szFileName;
210 TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
212 /* build name of first file */
213 SHGetPathFromIDListA(pidlRoot, szTemp);
214 PathAddBackslashA(szTemp);
215 len = strlen(szTemp);
216 _ILSimpleGetText(apidl[0], szTemp+len, MAX_PATH - len);
217 size = strlen(szTemp) + 1;
219 /* fill the structure */
220 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
221 if(!hGlobal) return hGlobal;
222 szFileName = (char *)GlobalLock(hGlobal);
223 GlobalUnlock(hGlobal);
227 HGLOBAL RenderPREFEREDDROPEFFECT (DWORD dwFlags)
232 TRACE("(0x%08lx)\n", dwFlags);
234 hGlobal = GlobalAlloc(GHND|GMEM_SHARE, sizeof(DWORD));
235 if(!hGlobal) return hGlobal;
236 pdwFlag = (DWORD*)GlobalLock(hGlobal);
238 GlobalUnlock(hGlobal);
242 /**************************************************************************
245 * checks if there is something in the clipboard we can use
247 BOOL IsDataInClipboard (HWND hwnd)
251 if (OpenClipboard(hwnd))
253 if (GetOpenClipboardWindow())
255 ret = IsClipboardFormatAvailable(CF_TEXT);