Arrow Keys Do Not Trigger KeyDown Event On GLControl . . . . . . .

Hy,

I have a Form which adds a GLControl for display.
After adding GLControl to the Form the arrow keys(up, down, left, right) does not raise the KeyDown event but all the rest of the keys do, Form's KeyPreview is set to true.
I tried using GLControl's KeyDown event but same result, no arrow keys fire the event.
If GLControl is not added to the Form arrow keys raise events just fine but not when GLControl is added.
There something wrong with GLControl's own key events which messes with the Form's key events too.

Another thing, KeyUp event works properly with GLControl and with Form after adding GLControl to it.

Do i have to use OpenTK's keyboard library as an alternative? and if yes then how can i integrate OpenTK keyboard with the GLControl KeyEvents or the Form?