Desktop bar problem

Hi,

I created an application that register a desktop bar. The bar is a windows
form with a ToolStrip control. The buttons are created dinamically. The bar
works fine but I have a problem with the ToolStrip. When the form lost focus
and I try click one button, it's necessary to click twice. My first
impression is that one click is necessary to form get focus again. I have
another problem, when the form lost focus and the mouse hover the button the
tooltips do not display. Any solution?