Embedding a GuiButtonCtrl in a GuiTextEditCtrl?

Hi,

I'm trying to have a text edit control with a button you can click to pop up a dialog.

I tried this:

new GuiTextEditCtrl(TalkEditorInspectField1) {
                     Profile = "GuiInspectorBackgroundProfile";
                     HorizSizing = "width";
                     VertSizing = "bottom";
                     position = "60 0";
                     Extent = "304 20";
                     MinExtent = "8 2";
                     Visible = "1";
                     AltCommand = "TalkEditorInspectApply();";
                     maxLength = "255";
                     historySize = "0";
                     password = "0";
                     tabComplete = "0";
                     sinkAllKeyEvents = "0";
                     password = "0";
                     passwordMask = "*";
                        autoSizeWidth = "0";
                        autoSizeHeight = "1";
                        textOffset = "0 2";

                     new GuiButtonCtrl() {
                        Profile = "GuiInspectorTypeFileNameProfile";
                        HorizSizing = "right";
                        VertSizing = "bottom";
                        position = "0 3";
                        Extent = "10 20";
                        MinExtent = "8 2";
                        Visible = "1";
                        Command = "TalkEditorInspectApply();";
                        text = "...";
                        groupNum = "-1";
                        buttonType = "PushButton";
                           border = "5";
                     };
                  };

Can this be done? Do I need another GuiCtrl or GuiFrameCtrl?

Terence