Toggles form design mode on or off. When Word is in form design mode, the Control Toolbox toolbar is displayed. You can use this toolbar to insert ActiveX controls such as command buttons, scroll bars, and option buttons. In form design mode, event procedures don't run, and when you click an embedded control, the control's sizing handles appear.
expression.ToggleFormsDesign
expression Required. An expression that returns a Document object.
Example
This example switches to form design mode if the Control Toolbox toolbar isn't currently displayed.
If CommandBars("Control Toolbox").Visible = False Then
ActiveDocument.ToggleFormsDesign
End If