>I have a form which will display a bunch of graphics at each 20 seconds.
>
>I have a timer which control the interval and refresh the graphic.
>

Hi Michel,

what about:

thisform.addobject("x", "image")
x.picture = "super.bmp"
x.left = (thisform.width - x.width) / 2
x.top = (thisform.height - x.height) /2
x.show


If you need to change the picture, just change the
x.picture property. Eventually you'll have to do a thisform.cls().