Erase keyboard icon from button bar

[Silvio]

On htc tnt II we can see the icon of keyboard on the centre of button bar on bottom.
When we use a dialog or a window we can see the icon on the centre but when we use a user buttonbar we can see the icon of keyboard on the right.
We wish Not show the icon on this buton bar because we made a small keyboard with fivewin buttons , and we want the user use only this our keyboard.

I allready trying with hidEkeyboard function but this function not erase the icon of keyboard on the right of buttonbar of our smarthphone HTCTNT II.

There is someone can help me?