public virtual string[] GetFormats(bool autoConvert)
{
Debug.Assert(_innerData is not null, "You must have an innerData on all DataObjects");
IEnumFORMATETC?enumFORMATETC = null;
// Since we are only adding elements to the HashSet, the order will be preserved.
HashSet <string> distinctFormats = new HashSet <string>();
try
{
enumFORMATETC = _innerData.EnumFormatEtc(DATADIR.DATADIR_GET);
}
catch
{
}
if (enumFORMATETC is not null)
{
enumFORMATETC.Reset();
FORMATETC[] formatetc = new FORMATETC[] { new FORMATETC() };
int[] retrieved = new int[] { 1 };
while (retrieved[0] > 0)
{
retrieved[0] = 0;
try
{
enumFORMATETC.Next(1, formatetc, retrieved);
}
catch
{
}
if (retrieved[0] > 0)
{
string name = DataFormats.GetFormat(formatetc[0].cfFormat).Name;
if (autoConvert)
{
string[] mappedFormats = GetMappedFormats(name) !;
for (int i = 0; i < mappedFormats.Length; i++)
{
distinctFormats.Add(mappedFormats[i]);
}
}
else
{
distinctFormats.Add(name);
}
}
}
}
return(distinctFormats.ToArray());
}
public virtual string[] GetFormats(bool autoConvert)
{
Debug.Assert(innerData != null, "You must have an innerData on all DataObjects");
IEnumFORMATETC enumFORMATETC = null;
ArrayList formats = new ArrayList();
try
{
enumFORMATETC = innerData.EnumFormatEtc(DATADIR.DATADIR_GET);
}
catch
{
}
if (enumFORMATETC != null)
{
enumFORMATETC.Reset();
FORMATETC[] formatetc = new FORMATETC[] { new FORMATETC() };
int[] retrieved = new int[] { 1 };
while (retrieved[0] > 0)
{
retrieved[0] = 0;
try
{
enumFORMATETC.Next(1, formatetc, retrieved);
}
catch
{
}
if (retrieved[0] > 0)
{
string name = DataFormats.GetFormat(formatetc[0].cfFormat).Name;
if (autoConvert)
{
string[] mappedFormats = GetMappedFormats(name);
for (int i = 0; i < mappedFormats.Length; i++)
{
formats.Add(mappedFormats[i]);
}
}
else
{
formats.Add(name);
}
}
}
}
string[] temp = new string[formats.Count];
formats.CopyTo(temp, 0);
return(GetDistinctStrings(temp));
}
int OleInterop.IDataObject.EnumFormatEtc(uint dwDirection, out OleInterop.IEnumFORMATETC ppenumFormatEtc)
{
if (null != oleData)
{
return(oleData.EnumFormatEtc(dwDirection, out ppenumFormatEtc));
}
BclComTypes.IEnumFORMATETC bclEnum = bclData.EnumFormatEtc((BclComTypes.DATADIR)dwDirection);
if (null == bclEnum)
{
ppenumFormatEtc = null;
}
else
{
ppenumFormatEtc = bclEnum as OleInterop.IEnumFORMATETC;
if (null == ppenumFormatEtc)
{
ppenumFormatEtc = (OleInterop.IEnumFORMATETC)(new EnumFORMATETC(bclEnum));
}
}
return(NativeMethods.S_OK);
}
private IEnumerable <string> GetDataFormatsCore()
{
var enumFormat = _wrapped.EnumFormatEtc(DATADIR.DATADIR_GET);
if (enumFormat != null)
{
enumFormat.Reset();
FORMATETC[] formats = new FORMATETC[1];
int[] fetched = { 1 };
while (fetched[0] > 0)
{
fetched[0] = 0;
if (enumFormat.Next(1, formats, fetched) == 0 && fetched[0] > 0)
{
if (formats[0].ptd != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(formats[0].ptd);
}
yield return(ClipboardFormats.GetFormat(formats[0].cfFormat));
}
}
}
}
long MsHtmHstInterop.IDropTarget.Drop(
[In] System.Runtime.InteropServices.ComTypes.IDataObject pDataObject,
[In] int grfKeyState,
[In] POINTL pt,
[In, Out] ref uint pdwEffect
)
{
System.Runtime.InteropServices.ComTypes.IEnumFORMATETC pEnum = (System.Runtime.InteropServices.ComTypes.IEnumFORMATETC)pDataObject.EnumFormatEtc(DATADIR.DATADIR_GET);
pEnum.Reset();
FORMATETC[] etcs = new FORMATETC[1];
int[] pceltFetched = new int[1];
while (pEnum.Next(1, etcs, pceltFetched) == 0)
{
if (etcs[0].cfFormat == 15)
{
STGMEDIUM data;
pDataObject.GetData(ref etcs[0], out data);
if (data.tymed == TYMED.TYMED_HGLOBAL)
{
string[] items = null;
IntPtr pData = GlobalLock(data.unionmember);
try
{
int size = (int)GlobalSize(data.unionmember);
int len = 0;
unsafe
{
Int32 *pOffset = (Int32 *)pData;
Int16 *pFileNames = (Int16 *)((Int32)pData + (*pOffset));
size -= *pOffset;
while (true)
{
if (len >= size || (pFileNames[len] == 0 && pFileNames[len + 1] == 0))
{
break;
}
len += 2;
}
String s = Marshal.PtrToStringUni((IntPtr)pFileNames, len);
items = s.Split(new char[] { (char)0 });
}
}
finally
{
GlobalUnlock(data.unionmember);
}
StringBuilder files = new StringBuilder();
foreach (string file in items)
{
if (System.IO.File.Exists(file))
{
if (files.Length > 0)
{
files.Append('\0');
}
files.Append(file);
}
}
if (files.Length > 0)
{
_window.IWindow.OnDropFiles.Call(files.ToString());
return(S_OK);
}
}
}
else if (etcs[0].cfFormat == 13)
{
STGMEDIUM data;
pDataObject.GetData(ref etcs[0], out data);
String text = null;
if (data.tymed == TYMED.TYMED_HGLOBAL)
{
IntPtr hData = GlobalLock(data.unionmember);
try
{
int size = (int)GlobalSize(data.unionmember);
text = Marshal.PtrToStringUni(hData);
}
finally
{
GlobalUnlock(data.unionmember);
}
}
Hashtable data_json = null;
try
{
data_json = Utility.ParseJson(text) as Hashtable;
}
catch
{
data_json = null;
}
if (data_json != null && data_json.ContainsKey("__Type") && data_json.ContainsKey("__Data"))
{
string drop_type = data_json["__Type"].ToString();
string drop_data = data_json["__Data"].ToString();
_window.IWindow.OnDrop.CallAll(drop_type, drop_data);
return(S_OK);
}
}
}
if (m_pPreDropTarget != null)
{
m_pPreDropTarget.Drop(pDataObject, grfKeyState, pt, ref pdwEffect);
}
return(S_OK);
}