/// <summary>
/// Determines if the paste command should be allowed.
/// </summary>
/// <returns></returns>
protected internal override bool AllowPasteCommand()
{
IOleDataObject dataObject = null;
try
{
ErrorHandler.ThrowOnFailure(UnsafeNativeMethods.OleGetClipboard(out dataObject));
if (dataObject == null)
{
return(false);
}
// First see if this is a set of storage based items
FORMATETC format = DragDropHelper.CreateFormatEtc((ushort)DragDropHelper.CF_VSSTGPROJECTITEMS);
if (dataObject.QueryGetData(new FORMATETC[] { format }) == VSConstants.S_OK)
{
return(true);
}
// Try reference based items
format = DragDropHelper.CreateFormatEtc((ushort)DragDropHelper.CF_VSREFPROJECTITEMS);
if (dataObject.QueryGetData(new FORMATETC[] { format }) == VSConstants.S_OK)
{
return(true);
}
// Try windows explorer files format
format = DragDropHelper.CreateFormatEtc((ushort)NativeMethods.CF_HDROP);
return(dataObject.QueryGetData(new FORMATETC[] { format }) == VSConstants.S_OK);
}
// We catch External exceptions since it might be that it is not our data on the clipboard.
catch (ExternalException e)
{
Trace.WriteLine("Exception :" + e.Message);
return(false);
}
}
int OleInterop.IDataObject.QueryGetData(OleInterop.FORMATETC[] pFormatetc)
{
if (null != oleData)
{
return(oleData.QueryGetData(pFormatetc));
}
if ((null == pFormatetc) || (1 != pFormatetc.Length))
{
throw new ArgumentException();
}
BclComTypes.FORMATETC bclFormat = StructConverter.OleFormatETC2Bcl(ref pFormatetc[0]);
return(bclData.QueryGetData(ref bclFormat));
}
public static void QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
pDataObject.QueryGetData(af);
fmtetc = af[0];
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
ThreadHelper.ThrowIfNotOnUIThread();
int returnValue = VSConstants.E_FAIL;
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
try
{
int result = ErrorHandler.ThrowOnFailure(pDataObject.QueryGetData(af));
if (result == VSConstants.S_OK)
{
fmtetc = af[0];
returnValue = VSConstants.S_OK;
}
}
catch (COMException e)
{
// do not display exception. We see this also when trying to ask for a Clipboard operation
// when the actual change was a drag/drop
returnValue = e.ErrorCode;
}
return(returnValue);
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject dataObject, ref FORMATETC fmtetc)
{
if (dataObject == null)
{
throw new ArgumentNullException("dataObject");
}
int returnValue = VSConstants.E_FAIL;
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
try
{
int result = ErrorHandler.ThrowOnFailure(dataObject.QueryGetData(af));
if (result == VSConstants.S_OK)
{
fmtetc = af[0];
returnValue = VSConstants.S_OK;
}
}
catch (COMException e)
{
Trace.WriteLine("COMException : " + e.Message);
returnValue = e.ErrorCode;
}
return(returnValue);
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
int hr = pDataObject.QueryGetData(af);
fmtetc = af[0];
return(hr);
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
int result = pDataObject.QueryGetData(af);
if (result == VSConstants.S_OK)
{
fmtetc = af[0];
return(VSConstants.S_OK);
}
return(result);
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
int returnValue = VSConstants.E_FAIL;
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
try
{
int result = ErrorHandler.ThrowOnFailure(pDataObject.QueryGetData(af));
if (result == VSConstants.S_OK)
{
fmtetc = af[0];
returnValue = VSConstants.S_OK;
}
}
catch (COMException e)
{
XSharpProjectPackage.Instance.DisplayException(e);
returnValue = e.ErrorCode;
}
return(returnValue);
}