The DesignModeEnum type specifies the design-modes
  the control supports. The 
DesignMode
  property specifies the current design-mode. The DesignModeEnum type supports
  the following values:
 |  | Name | Value | Description |  | 
 |  | 
exDesignLock | 0
 | 
 No design mode for the surface (lock). The user can not create, move, resize
any object on the surface.
 |  | 
 |  | 
exDesignElements | 1
 | 
 The user can create, edit, move or resize the elements.
 |  | 
 |  | 
exDesignPools | 2
 | 
 The user can create, edit, move or resize the pools, headers, lanes, ...
 |  | 
 |  | 
exDesign | 3
 | 
 The user can create, edit, move or resize any object ( elements, pools, headers,
lanes ) on the surface.
 |  |