background applets don't redraw for color palette changes

 
> - When running in Win32 on 8-bit graphics configurations, when the
> application becomes a background app (another application is
> given focus, and partially covers the java App), the java Canvas
> peer does not catch the palette changed events and redraw to
> keep images, etc. looking nice. Images get trashed because
> the palette has been randomized (from their perspective).
> MOREOVER, when the java application is then raised and given
> focus, the redraw only redraws that portion of the canvas
> that was revealed, leaving the rest of the image trashed.
> The only workaround is to iconify and restore the application.