>Einar,
>
>If you are painting your control in response to a WM_PAINT message you may experience problems using the stock tooltip control. This is because the tooltip control is saving the background to alleviate redraws using the CS_SAVEBITS window style. This is not normally a problem but if you start to take more control over drawing your client area then stock tooltips will not cut it.
>
>Regards
>Neil

I just added the code to update the tooltip text from the OnMouseMove event handler and I have not seen any problems with it yet. I have been moving the mouse pretty fast around, but more testing might be in order. I am drawing the entire control myself and I am using SetStyle() to avoid flickering.

Einar