Levente Uzonyi wrote:
>
> Okay, first experiments:
> 1. Dragging windows is a lot faster than with Squeak.
> 2. DNU when you open the World menu and press Alt+t (it opens a 
> Transcript in Squeak).

Thanks! Will fix it.

> 3. When I try to change the window size to 1920 at 1080 then Squeak VM 
> crashes on Windows (4.0.2).
>
> The Smalltalk Stack:
> 58176356 Behavior>new:
> 58176236 Form>setExtent:depth:
> 58176096 Form class>extent:depth:
> 58176004 Form>magnify:to:smoothing:
> 58175912 Form>magnifyTo:
> 50340572 PasteUpMorph>buildMagnifiedBackgroundImage
> 50340408 PasteUpMorph>extent:
> 50340316 PasteUpMorph>restoreMorphicDisplay
> 42191724 DisplayScreen class>checkForNewScreenSize
> 42191632 WorldState>doOneCycleNowFor:
> 42191448 WorldState>doOneCycleFor:
> 42191356 PasteUpMorph>doOneCycle
> 37207620 ProjectX class>spawnNewProcessX
> 37207496 BlockClosure>newProcess
>
> The extent is 9711241920 at 1061 for some reason. It doesn't crash with 
> Cog, so it might be a VM bug. It doesn't crash with Squeak images though.

It doesn't crash with Squeak because it doesn't do the magnified 
background image stuff. If you set a plain background color in Cuis it 
won't happen either.

BTW, how did you get to 9711241920 at 1061? I tried validating the 
arguments, and they look ok to me all over the stack...

Anyway, I have no idea what's going wrong, but it doesn't happen with 
4.0.1 or earlier Windows VMs. It also doesn't happen if I halt and proceed:

buildMagnifiedBackgroundImage
    | image old |
[    old _ backgroundImage.
    backgroundImageData
        ifNil: [ backgroundImage _ nil ]
        ifNotNil: [
            image _ Form fromBinaryStream: backgroundImageData readStream.
            self halt.
            backgroundImage _ image magnifyTo: bounds extent ].
    old == backgroundImage ifFalse: [
        self changed ]] fork

Andreas, can you help with this one? Did something in the platform 
support code changed between VMs 4.0.1 and 4.0.2 ? (I confirm it crashes 
in 4.1.1).

Thanks,
Juan Vuletich

>
>
> Levente
>
>>
>> Cheers,
>> Juan Vuletich
>>
>>