On Fri, Mar 1, 2019 at 6:54 AM K K Subbu <kksubbu.ml at gmail.com> wrote:

> On 28/02/19 7:44 PM, karl ramberg wrote:
> > Hi,
> > When I click and drag a SketchMorph with the mouse wheel, the
> > SketchMorph jump to the top left corner of the screen, and then follows
> > the mouse.
> > I have the same issue on both Windows and Linux
>
> I am unable to reproduce this on Squeak 5.2 #18231 (64b Ubuntu 16.04).
> Could you please list the precise sequence?
>
> BTW, I noticed that creating sketches from lasso or rubberband no longer
> works. Only rectangle snip works :-(.
>
> E.g.
>     World-Menu -> new morph -> grab rectangle from screen
>        draw rectangle in the balloon - drag a sketch.
>     World-Menu -> new morph -> grab lasso from screen
>        draw lasso in the balloon - no sketch
>     ditto for grab rubber band from screen.
>

It's a bug in BitBlt in 32 bit screen depth. It works when screen is set to
16 bit.

Combination rule Form erase1bitShape returns a transparent form in 32 bit
screen depth.

Best,
Karl



>
> Regards .. Subbu
>
>
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