private DirectoryObject[] ProcessSelections(IDataObject dataObj)
{
if (dataObj == null)
return null;
DirectoryObject[] selections = null;
// The STGMEDIUM structure is a generalized global memory handle used for data transfer operations
STGMEDIUM stg = new STGMEDIUM();
stg.tymed = (uint)TYMED.TYMED_HGLOBAL;
stg.hGlobal = IntPtr.Zero;
stg.pUnkForRelease = null;
// The FORMATETC structure is a generalized Clipboard format.
FORMATETC fe = new FORMATETC();
fe.cfFormat = System.Windows.Forms.DataFormats.GetFormat(CLIPBOARD_FORMAT.CFSTR_DSOP_DS_SELECTION_LIST).Id;
// The CFSTR_DSOP_DS_SELECTION_LIST clipboard format is provided by the IDataObject obtained
// by calling IDsObjectPicker::InvokeDialog
fe.ptd = IntPtr.Zero;
fe.dwAspect = 1; //DVASPECT_CONTENT = 1,
fe.lindex = -1; // all of the data
fe.tymed = (uint)TYMED.TYMED_HGLOBAL; //The storage medium is a global memory handle (HGLOBAL)
dataObj.GetData(ref fe, ref stg);
IntPtr pDsSL = PInvoke.GlobalLock(stg.hGlobal);
try
{
// the start of our structure
IntPtr current = pDsSL;
// get the # of items selected
int cnt = Marshal.ReadInt32(current);
// if we selected at least 1 object
if (cnt > 0)
{
selections = new DirectoryObject[cnt];
// increment the pointer so we can read the DS_SELECTION structure
current = (IntPtr)((int)current + (Marshal.SizeOf(typeof(uint)) * 2));
// now loop through the structures
for (int i = 0; i < cnt; i++)
{
// marshal the pointer to the structure
DS_SELECTION s = (DS_SELECTION)Marshal.PtrToStructure(current, typeof(DS_SELECTION));
//Marshal.DestroyStructure(current, typeof(DS_SELECTION));
// increment the position of our pointer by the size of the structure
current = (IntPtr)((int)current + Marshal.SizeOf(typeof(DS_SELECTION)));
string name = s.pwzName;
string path = s.pwzADsPath;
string schemaClassName = s.pwzClass;
string upn = s.pwzUPN;
//string temp = Marshal.PtrToStringUni( s.pvarFetchedAttributes );
selections[i] = new DirectoryObject(name, path, schemaClassName, upn);
}
}
}
finally
{
PInvoke.GlobalUnlock(pDsSL);
Marshal.FreeHGlobal(stg.hGlobal);
}
return selections;
}
private DirectoryObject[] ProcessSelections(IDataObject dataObj)
{
if (dataObj == null)
{
return(null);
}
DirectoryObject[] selections = null;
// The STGMEDIUM structure is a generalized global memory handle used for data transfer operations
STGMEDIUM stg = new STGMEDIUM();
stg.tymed = (uint)TYMED.TYMED_HGLOBAL;
stg.hGlobal = IntPtr.Zero;
stg.pUnkForRelease = null;
// The FORMATETC structure is a generalized Clipboard format.
FORMATETC fe = new FORMATETC();
fe.cfFormat = System.Windows.Forms.DataFormats.GetFormat(CLIPBOARD_FORMAT.CFSTR_DSOP_DS_SELECTION_LIST).Id;
// The CFSTR_DSOP_DS_SELECTION_LIST clipboard format is provided by the IDataObject obtained
// by calling IDsObjectPicker::InvokeDialog
fe.ptd = IntPtr.Zero;
fe.dwAspect = 1; //DVASPECT_CONTENT = 1,
fe.lindex = -1; // all of the data
fe.tymed = (uint)TYMED.TYMED_HGLOBAL; //The storage medium is a global memory handle (HGLOBAL)
dataObj.GetData(ref fe, ref stg);
IntPtr pDsSL = PInvoke.GlobalLock(stg.hGlobal);
try
{
// the start of our structure
IntPtr current = pDsSL;
// get the # of items selected
int cnt = Marshal.ReadInt32(current);
// if we selected at least 1 object
if (cnt > 0)
{
selections = new DirectoryObject[cnt];
// increment the pointer so we can read the DS_SELECTION structure
current = (IntPtr)((int)current + (Marshal.SizeOf(typeof(uint)) * 2));
// now loop through the structures
for (int i = 0; i < cnt; i++)
{
// marshal the pointer to the structure
DS_SELECTION s = (DS_SELECTION)Marshal.PtrToStructure(current, typeof(DS_SELECTION));
Marshal.DestroyStructure(current, typeof(DS_SELECTION));
// increment the position of our pointer by the size of the structure
current = (IntPtr)((int)current + Marshal.SizeOf(typeof(DS_SELECTION)));
string name = s.pwzName;
string path = s.pwzADsPath;
string schemaClassName = s.pwzClass;
string upn = s.pwzUPN;
//string temp = Marshal.PtrToStringUni( s.pvarFetchedAttributes );
selections[i] = new DirectoryObject(name, path, schemaClassName, upn);
}
}
}
finally
{
PInvoke.GlobalUnlock(pDsSL);
}
return(selections);
}
