WIP: clean-up

RyzStudio/Windows/Forms/ThreadControl.cs

@@ -181,6 +181,56 @@ namespace RyzStudio.Windows.Forms
             return rv;
         }
 
+        public static TreeNode Add(TreeNode control, string key, string text, int imageIndex, int selectedImageIndex)
+        {
+            TreeNode rv = null;
+
+            if (control.TreeView.InvokeRequired)
+            {
+                control.TreeView.Invoke(new MethodInvoker(() => {
+                    rv = control.Nodes.Add(key, text, imageIndex, selectedImageIndex);
+                }));
+            }
+            else
+            {
+                rv = control.Nodes.Add(key, text, imageIndex, selectedImageIndex);
+            }
+
+            return rv;
+        }
+
+        public static TreeNode Add(TreeView control, string key, string text, int imageIndex, int selectedImageIndex)
+        {
+            TreeNode rv = null;
+
+            if (control.InvokeRequired)
+            {
+                control.Invoke(new MethodInvoker(() => {
+                    rv = control.Nodes.Add(key, text, imageIndex, selectedImageIndex);
+                }));
+            }
+            else
+            {
+                rv = control.Nodes.Add(key, text, imageIndex, selectedImageIndex);
+            }
+
+            return rv;
+        }
+
+        public static void Add(Control parentControl, ImageList control, string key, Image value)
+        {
+            if (parentControl.InvokeRequired)
+            {
+                parentControl.Invoke(new MethodInvoker(() => {
+                    control.Images.Add(key, value);
+                }));
+            }
+            else
+            {
+                control.Images.Add(key, value);
+            }
+        }
+
         public static void AddLine(RichTextBox control, string text)
         {
             if (control.InvokeRequired)
@@ -355,6 +405,12 @@ namespace RyzStudio.Windows.Forms
 
         public static void SetEnable(ToolStripMenuItem control, bool value)
         {
+            if (control.GetCurrentParent() == null)
+            {
+                control.Enabled = value;
+                return;
+            }
+
             if (control.GetCurrentParent().InvokeRequired)
             {
                 control.GetCurrentParent().Invoke(new MethodInvoker(() =>