VsTeXProject.VisualStudio.Project.ProjectNode.CopyToClipboard C# (CSharp) Method

        protected internal override int CopyToClipboard()
        {
            var returnValue = (int) OleConstants.OLECMDERR_E_NOTSUPPORTED;
            try
            {
                RegisterClipboardNotifications(true);

                // Create our data object and change the selection to show item(s) being copy
                IOleDataObject dataObject = PackageSelectionDataObject(false);
                if (dataObject != null)
                {
                    SourceDraggedOrCutOrCopied = true;

                    // Add our copy item(s) to the clipboard
                    ErrorHandler.ThrowOnFailure(UnsafeNativeMethods.OleSetClipboard(dataObject));

                    // Inform VS (UiHierarchyWindow) of the copy
                    var clipboardHelper = (IVsUIHierWinClipboardHelper) GetService(typeof (SVsUIHierWinClipboardHelper));
                    if (clipboardHelper == null)
                    {
                        return VSConstants.E_FAIL;
                    }
                    returnValue = ErrorHandler.ThrowOnFailure(clipboardHelper.Copy(dataObject));
                }
            }
            catch (COMException e)
            {
                Trace.WriteLine("Exception : " + e.Message);
                returnValue = e.ErrorCode;
            }
            catch (ArgumentException e)
            {
                Trace.WriteLine("Exception : " + e.Message);
                returnValue = Marshal.GetHRForException(e);
            }

            return returnValue;
        }