| **Navigation:**  [[abc library reference.htm|ABC Library Reference]] > ToolbarReltreeClass > ToolbarReltreeClass Methods >====== DisplayButtons (enable appropriate toolbar buttons:ToolbarReltreeClass) {{c6h0009.jpg|C6H0009.jpg}} ====== | [[toolbarreltreeclass methods.htm|{{btn_prev_n.gif|Previous page}}]][[abc library reference.htm|{{btn_home_n.gif|Return to chapter overview}}]][[taketoolbar  assume control of the toolbar toolbarreltreeclass .htm|{{btn_next_n.gif|Next page}}]] |
|  ||

**DisplayButtons, VIRTUAL**

{{blk2blue.jpg|blk2blue.jpg}}

The **DisplayButtons **method enables and disables the appropriate toolbar buttons for the ToolbarReltreeClass object based on the values of the HelpButton, InsertButton, ChangeButton, DeleteButton, and SelectButton properties.

**Implementation:     **The TakeToolbar method calls the DisplayButtons method.

**Example:**

** CODE**

** Toolbar.Init                                   !initialize Toolbar object**

**  ToolBar.AddTarget( ToolBarForm, -1 )          !register an Update Form target**

**  Toolbar.AddTarget( REL1::Toolbar, ?RelTree )  !register a RelTree target**

**  ToolBar.SetTarget( ?RelTree )                 !calls DisplayButtons via TakeToolbar**

** !program code**

**MyToolbarReltreeClass.DisplayButtons PROCEDURE  !a derived class virtual**

** CODE**

** DISABLE(Toolbar:History)                      !disable toolbar ditto button**

** ENABLE(Toolbar:Locate)                        !enable locator button**

** PARENT.DisplayButtons                         !call base class DisplayButtons**

** !your custom code here**

**See Also:**     [[helpbutton  help control number .htm|HelpButton]], [[insertbutton  insert control number .htm|InsertButton]], [[changebutton  change control number .htm|ChangeButton]], [[deletebutton  delete control number .htm|DeleteButton]], [[selectbutton  select control number .htm|SelectButton]], [[taketoolbar  assume control of the toolbar toolbarreltreeclass .htm|TakeToolbar]]