Hi Erel,
Your second approach did the trick.
This works for both, desktop and PPC:
If pos > 3 And pos < 3.3 Then
If frmGalilean.GetPixel(px,py)=frmGalilean.GetPixel(x0,y0) Then
frmGalilean.Circle(px,py,1,cYellow ,F)
else
frmGalilean.Circle(px,py,1,cWhite,F)
end if
Else
frmGalilean.Circle(px,py,1,cWhite,F)
End If
Obviously, on the PPC, I must not use the color of a coordinate exactly onto which the circle is to be drawn. Don't ask me why
Anyway, thanks so much for your prompt attention.
Cheers
Robert