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ole32: Add support for getting global handle objects from a flushed clipboard.

This commit is contained in:
Huw Davies 2009-04-16 12:32:58 +01:00 committed by Alexandre Julliard
parent 718831b77c
commit f8a9ca2cfa
1 changed files with 88 additions and 55 deletions
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143
dlls/ole32/clipboard.c
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@ -904,20 +904,76 @@ end:
return hr;
}
/***********************************************************
* get_priv_data
*
* Returns a copy of the Ole Private Data
*/
static HRESULT get_priv_data(ole_priv_data **data)
{
HGLOBAL handle;
HRESULT hr = S_OK;
*data = NULL;
handle = GetClipboardData( ole_priv_data_clipboard_format );
if(handle)
{
ole_priv_data *src = GlobalLock(handle);
if(src)
{
/* FIXME: sanity check on size */
*data = HeapAlloc(GetProcessHeap(), 0, src->size);
if(!*data)
{
GlobalUnlock(handle);
return E_OUTOFMEMORY;
}
memcpy(*data, src, src->size);
GlobalUnlock(handle);
}
}
if(!*data) hr = create_empty_priv_data(data);
return hr;
}
/************************************************************************
* get_stgmed_for_global
*
* Returns a stg medium with a copy of the global handle
*/
static HRESULT get_stgmed_for_global(HGLOBAL h, STGMEDIUM *med)
{
HRESULT hr;
med->pUnkForRelease = NULL;
med->tymed = TYMED_NULL;
hr = dup_global_mem(h, GMEM_MOVEABLE, &med->u.hGlobal);
if(SUCCEEDED(hr)) med->tymed = TYMED_HGLOBAL;
return hr;
}
/************************************************************************
* snapshot_GetData
*/
static HRESULT WINAPI snapshot_GetData(IDataObject *iface,
FORMATETC *pformatetcIn,
STGMEDIUM *pmedium)
static HRESULT WINAPI snapshot_GetData(IDataObject *iface, FORMATETC *fmt,
STGMEDIUM *med)
{
snapshot *This = impl_from_IDataObject(iface);
HANDLE h, hData = 0;
HANDLE h;
HRESULT hr;
ole_priv_data *enum_data = NULL;
ole_priv_data_entry *entry;
DWORD mask;
TRACE("(%p,%p,%p)\n", iface, pformatetcIn, pmedium);
TRACE("(%p,%p,%p)\n", iface, fmt, med);
if ( !pformatetcIn || !pmedium ) return E_INVALIDARG;
if ( !fmt || !med ) return E_INVALIDARG;
if ( !OpenClipboard(NULL)) return CLIPBRD_E_CANT_OPEN;
@ -926,43 +982,39 @@ static HRESULT WINAPI snapshot_GetData(IDataObject *iface,
if(This->data)
{
hr = IDataObject_GetData(This->data, pformatetcIn, pmedium);
hr = IDataObject_GetData(This->data, fmt, med);
CloseClipboard();
return hr;
}
h = GetClipboardData(fmt->cfFormat);
if(!h)
{
hr = DV_E_FORMATETC;
goto end;
}
/*
* Otherwise, get the data from the windows clipboard using GetClipboardData
*/
hr = get_priv_data(&enum_data);
if(FAILED(hr)) goto end;
if ( pformatetcIn->lindex != -1 )
{
hr = DV_E_FORMATETC;
goto end;
}
entry = find_format_in_list(enum_data->entries, enum_data->count, fmt->cfFormat);
if(entry)
mask = fmt->tymed & entry->fmtetc.tymed;
else /* non-Ole format */
mask = fmt->tymed & TYMED_HGLOBAL;
if ( (pformatetcIn->tymed & TYMED_HGLOBAL) != TYMED_HGLOBAL )
{
hr = DV_E_TYMED;
goto end;
}
h = GetClipboardData(pformatetcIn->cfFormat);
hr = dup_global_mem(h, GMEM_MOVEABLE, &hData);
/*
* Return the clipboard data in the storage medium structure
*/
pmedium->tymed = (hData == 0) ? TYMED_NULL : TYMED_HGLOBAL;
pmedium->u.hGlobal = hData;
pmedium->pUnkForRelease = NULL;
if(mask & TYMED_HGLOBAL)
hr = get_stgmed_for_global(h, med);
else
{
FIXME("Unhandled tymed - emum tymed %x req tymed %x\n", entry->fmtetc.tymed, fmt->tymed);
hr = E_FAIL;
goto end;
}
end:
if ( !CloseClipboard() ) return CLIPBRD_E_CANT_CLOSE;
if(FAILED(hr)) return hr;
return (hData == 0) ? DV_E_FORMATETC : S_OK;
if ( !CloseClipboard() ) hr = CLIPBRD_E_CANT_CLOSE;
return hr;
}
/************************************************************************
@ -1029,8 +1081,7 @@ static HRESULT WINAPI snapshot_SetData(IDataObject *iface, FORMATETC *fmt,
static HRESULT WINAPI snapshot_EnumFormatEtc(IDataObject *iface, DWORD dir,
IEnumFORMATETC **enum_fmt)
{
HRESULT hr = S_OK;
HGLOBAL handle;
HRESULT hr;
ole_priv_data *data = NULL;
TRACE("(%p, %x, %p)\n", iface, dir, enum_fmt);
@ -1040,26 +1091,8 @@ static HRESULT WINAPI snapshot_EnumFormatEtc(IDataObject *iface, DWORD dir,
if ( dir != DATADIR_GET ) return E_NOTIMPL;
if ( !OpenClipboard(NULL) ) return CLIPBRD_E_CANT_OPEN;
handle = GetClipboardData( ole_priv_data_clipboard_format );
if(handle)
{
ole_priv_data *src = GlobalLock(handle);
if(src)
{
/* FIXME: sanity check on size */
data = HeapAlloc(GetProcessHeap(), 0, src->size);
if(!data)
{
GlobalUnlock(handle);
hr = E_OUTOFMEMORY;
goto end;
}
memcpy(data, src, src->size);
GlobalUnlock(handle);
}
}
hr = get_priv_data(&data);
if(!data) hr = create_empty_priv_data(&data);
if(FAILED(hr)) goto end;
hr = enum_fmtetc_construct( data, 0, enum_fmt );