fix some more warnings

src/AddIns/DisplayBindings/ResourceEditor/Project/Src/Commands/AddNewFileCommand.cs

@@ -8,6 +8,7 @@ using System.Runtime.Serialization.Formatters.Binary;
 using System.Windows.Forms;
 
 using ICSharpCode.Core;
+using ICSharpCode.SharpDevelop;
 using ICSharpCode.SharpDevelop.Gui;
 
 namespace ResourceEditor
@@ -16,7 +17,7 @@ namespace ResourceEditor
 	{
 		public override void Run()
 		{
-			ResourceEditorControl editor = ((ResourceEditWrapper)WorkbenchSingleton.Workbench.ActiveViewContent).ResourceEditor;
+			ResourceEditorControl editor = ((ResourceEditWrapper)SD.Workbench.ActiveViewContent).ResourceEditor;
 			
 			if(editor.ResourceList.WriteProtected) {
 				return;
@@ -28,7 +29,7 @@ namespace ResourceEditor
 				fdiag.Multiselect    = true;
 				fdiag.CheckFileExists = true;
 				
-				if (fdiag.ShowDialog(ICSharpCode.SharpDevelop.Gui.WorkbenchSingleton.MainWin32Window) == DialogResult.OK) {
+				if (fdiag.ShowDialog(SD.Workbench.MainWin32Window) == DialogResult.OK) {
 					foreach (string filename in fdiag.FileNames) {
 						string oresname = Path.ChangeExtension(Path.GetFileName(filename), null);
 						if (oresname == "") oresname = "new";

src/AddIns/DisplayBindings/ResourceEditor/Project/Src/Commands/AddStringEntryCommand.cs

@@ -4,7 +4,7 @@
 using System;
 using System.Windows.Forms;
 using ICSharpCode.Core;
-using ICSharpCode.SharpDevelop.Gui;
+using ICSharpCode.SharpDevelop;
 
 namespace ResourceEditor
 {
@@ -12,7 +12,7 @@ namespace ResourceEditor
 	{
 		public override void Run()
 		{
-			ResourceEditorControl editor = ((ResourceEditWrapper)WorkbenchSingleton.Workbench.ActiveViewContent).ResourceEditor;
+			ResourceEditorControl editor = ((ResourceEditWrapper)SD.Workbench.ActiveViewContent).ResourceEditor;
 			
 			if(editor.ResourceList.WriteProtected) {
 				return;