Sweden-Number/dlls/shell32/clipboard.c

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/*
* clipboard helper functions
*
* Copyright 2000 Juergen Schmied <juergen.schmied@debitel.de>
*
* For copy & paste functions within contextmenus does the shell use
* the OLE clipboard functions in combination with dataobjects.
* The OLE32.DLL gets loaded with LoadLibrary
*
* - a right mousebutton-copy sets the following formats:
* classic:
* Shell IDList Array
* Prefered Drop Effect
* Shell Object Offsets
* HDROP
* FileName
* ole:
* OlePrivateData (ClipboardDataObjectInterface)
*
*/
#include <string.h>
#include "winreg.h"
#include "shlwapi.h"
#include "pidl.h"
#include "undocshell.h"
#include "shell32_main.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(shell);
static int refClipCount = 0;
static HINSTANCE hShellOle32 = 0;
/**************************************************************************
* InitShellOle
*
*
*/
void InitShellOle(void)
{
}
/**************************************************************************
* FreeShellOle
*
* unload OLE32.DLL
*/
void FreeShellOle(void)
{
if (!--refClipCount)
{
pOleUninitialize();
FreeLibrary(hShellOle32);
}
}
/**************************************************************************
* LoadShellOle
*
* make sure OLE32.DLL is loaded
*/
BOOL GetShellOle(void)
{
if(!refClipCount)
{
hShellOle32 = LoadLibraryA("ole32.dll");
if(hShellOle32)
{
pOleInitialize=(void*)GetProcAddress(hShellOle32,"OleInitialize");
pOleUninitialize=(void*)GetProcAddress(hShellOle32,"OleUninitialize");
pRegisterDragDrop=(void*)GetProcAddress(hShellOle32,"RegisterDragDrop");
pRevokeDragDrop=(void*)GetProcAddress(hShellOle32,"RevokeDragDrop");
pDoDragDrop=(void*)GetProcAddress(hShellOle32,"DoDragDrop");
pReleaseStgMedium=(void*)GetProcAddress(hShellOle32,"ReleaseStgMedium");
pOleSetClipboard=(void*)GetProcAddress(hShellOle32,"OleSetClipboard");
pOleGetClipboard=(void*)GetProcAddress(hShellOle32,"OleGetClipboard");
pOleInitialize(NULL);
refClipCount++;
}
}
return TRUE;
}
/**************************************************************************
* RenderHDROP
*
* creates a CF_HDROP structure
*/
HGLOBAL RenderHDROP(LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
{
int i;
int rootsize = 0,size = 0;
char szRootPath[MAX_PATH];
char szFileName[MAX_PATH];
HGLOBAL hGlobal;
DROPFILES *pDropFiles;
int offset;
TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
/* get the size needed */
size = sizeof(DROPFILES);
SHGetPathFromIDListA(pidlRoot, szRootPath);
PathAddBackslashA(szRootPath);
rootsize = strlen(szRootPath);
for (i=0; i<cidl;i++)
{
_ILSimpleGetText(apidl[i], szFileName, MAX_PATH);
size += rootsize + strlen(szFileName) + 1;
}
size++;
/* Fill the structure */
hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
if(!hGlobal) return hGlobal;
pDropFiles = (DROPFILES *)GlobalLock(hGlobal);
pDropFiles->pFiles = sizeof(DROPFILES);
pDropFiles->fWide = FALSE;
offset = pDropFiles->pFiles;
strcpy(szFileName, szRootPath);
for (i=0; i<cidl;i++)
{
_ILSimpleGetText(apidl[i], szFileName + rootsize, MAX_PATH - rootsize);
size = strlen(szFileName) + 1;
strcpy(((char*)pDropFiles)+offset, szFileName);
offset += size;
}
((char*)pDropFiles)[offset] = 0;
GlobalUnlock(hGlobal);
return hGlobal;
}
HGLOBAL RenderSHELLIDLIST (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
{
int i,offset = 0, sizePidl, size;
HGLOBAL hGlobal;
LPCIDA pcida;
TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
/* get the size needed */
size = sizeof(CIDA) + sizeof (UINT)*(cidl); /* header */
size += ILGetSize (pidlRoot); /* root pidl */
for(i=0; i<cidl; i++)
{
size += ILGetSize(apidl[i]); /* child pidls */
}
/* fill the structure */
hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
if(!hGlobal) return hGlobal;
pcida = GlobalLock (hGlobal);
pcida->cidl = cidl;
/* root pidl */
offset = sizeof(CIDA) + sizeof (UINT)*(cidl);
pcida->aoffset[0] = offset; /* first element */
sizePidl = ILGetSize (pidlRoot);
memcpy(((LPBYTE)pcida)+offset, pidlRoot, sizePidl);
offset += sizePidl;
for(i=0; i<cidl; i++) /* child pidls */
{
pcida->aoffset[i+1] = offset;
sizePidl = ILGetSize(apidl[i]);
memcpy(((LPBYTE)pcida)+offset, apidl[i], sizePidl);
offset += sizePidl;
}
GlobalUnlock(hGlobal);
return hGlobal;
}
HGLOBAL RenderSHELLIDLISTOFFSET (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
{
FIXME("\n");
return 0;
}
HGLOBAL RenderFILECONTENTS (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
{
FIXME("\n");
return 0;
}
HGLOBAL RenderFILEDESCRIPTOR (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
{
FIXME("\n");
return 0;
}
HGLOBAL RenderFILENAME (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
{
int len, size = 0;
char szTemp[MAX_PATH], *szFileName;
HGLOBAL hGlobal;
TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
/* build name of first file */
SHGetPathFromIDListA(pidlRoot, szTemp);
PathAddBackslashA(szTemp);
len = strlen(szTemp);
_ILSimpleGetText(apidl[0], szTemp+len, MAX_PATH - len);
size = strlen(szTemp) + 1;
/* fill the structure */
hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
if(!hGlobal) return hGlobal;
szFileName = (char *)GlobalLock(hGlobal);
GlobalUnlock(hGlobal);
return hGlobal;
}
HGLOBAL RenderPREFEREDDROPEFFECT (DWORD dwFlags)
{
DWORD * pdwFlag;
HGLOBAL hGlobal;
TRACE("(0x%08lx)\n", dwFlags);
hGlobal = GlobalAlloc(GHND|GMEM_SHARE, sizeof(DWORD));
if(!hGlobal) return hGlobal;
pdwFlag = (DWORD*)GlobalLock(hGlobal);
*pdwFlag = dwFlags;
GlobalUnlock(hGlobal);
return hGlobal;
}
/**************************************************************************
* IsDataInClipboard
*
* checks if there is something in the clipboard we can use
*/
BOOL IsDataInClipboard (HWND hwnd)
{
BOOL ret = FALSE;
if (OpenClipboard(hwnd))
{
if (GetOpenClipboardWindow())
{
ret = IsClipboardFormatAvailable(CF_TEXT);
}
CloseClipboard();
}
return ret;
}