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Ticket Resolution Summary Owner Reporter
#255 fixed Changeset 4945 (Alpha channel OS3) Mikhail Malyshev

Not fully agree with you.

First of all, it works, if setup correctly.

Hopefully AkPNG can get updated, in current 45.95 form it has bugs with simple 2-8 bit images when alpha channel is enabled :-( The WarpPNG datatype outsource is an alternative, but has a registration limitation.

To prevent problems under OS3, it would have been simpler to include low colour version of the images with ZERO colour set for transparency.

Why should people who have it working perfectly, suffer ?

#156 fixed Changing screenmodes while MUI prefs running Thore Böckelmann Mikhail Malyshev

With older MUI 3.9 it is possible to start MUI prefs, iconify it, change WB screenmode and reopen it.

With MUI 4 under OS3 or OS4 it prevents the system from changing screenmode while it is running.

Under OS4 it causes an infinite loop of automatic attempts to change screenmode.

#123 fixed Check stack size to be large enough Thore Böckelmann Thore Böckelmann


MUI 3.8 already demanded more stack than the default 8K provided by the system. With MUI 3.9 this requirement has increased even more. Without enough (free) stack certain applications will just crash.


Ticket #116 has proven that a stack size of 16K or 20K might be enough, but 32K is definitely a better choice and should be used as an absolute minimum requirement.

Enhancement recommendation

To avoid future crashes the application's stack size should be checked to be at least 32K when creating an instance of Application.mui as this the absolute basic for an MUI application. If the current stack size is found to be lower a warning should be shown to the user with the ability to abort the application early to avoid possible crashes due to the too low stack size.

AmigaOS4 does lots harder to provide a bigger stack even if an application's icon requests loo little stack when started from Workbench. AmigaOS3 would require lots of patches for this to archive. In general it does not harm to have such a check for all systems.

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