[JW Lua] Measure width in score changes when measure width in a part is changed after Undo/Redo - Workaround

[Robert Patterson]

I saw an additional issue, which is that the Undo does not undo the part
width setting. I found some notes about this in my Patterson Plugins code,
so the problem has been around a while.

Glad you found a workaround.

On Wed, Apr 3, 2024 at 9:29 AM Jan Angermüller <jan at angermueller.com> wrote:

> Thank you for the quick response, Robert!
> I found a workaround which at least works in the test case below:
> When I (re-)save the measure width in the score afterwards, it is still
> the same bug.
> BUT:
> When I slightly change the measure width in the score, save it, then
> restore the original value and save it again, both the measure width in the
> score and in the parts seem to have the correct value.
> It seems to set a flag in Finale that the measure width in the score has
> indeed changed.
>
> I will have to check if this also solves the problem in Perfect Layout.
>
> Here is the new test code with the additional lines in bold:
>
> --Show measure 1 width from score
> local meas=finale.FCMeasure(1)
> meas:Load(1)
> print("Measure Width in Score",meas.Width)
>
> --Load Part 3 and change
> local p=finale.FCPart(3)
> p:SwitchTo();
>     p:ViewInDocument()
>     meas=finale.FCMeasure(1)
>     meas:Load(1)
>     print("Measure Width in Part ",p.ID,meas.Width)
>     meas.Width=360
>     meas:Save()
>     print("Measure Width after change",meas.Width)
> p:SwitchBack();
>
> --Go back to score and show measure 1 width
> p=finale.FCPart(0)
> p:ViewInDocument()
> meas=finale.FCMeasure(1)
> meas:Load(1)
>
>
>
> *meas.Width=meas.Width+1 meas:Save() meas.Width=meas.Width-1 meas:Save()*
> print("Measure Width in Score",meas.Width)
>
> Jan
>
>
>
> Am 03.04.2024 um 15:34 schrieb Robert Patterson:
>
> This is a bug in Finale. I doubt it will be fixed. But you could send it
> to them if you wish.
>
> On Wed, Apr 3, 2024 at 7:53 AM Jan Angermüller <jan at angermueller.com>
> wrote:
>
>> Robert,
>>
>> I have noticed several times that undo-ing and re-doing a JW Lua plug-in
>> can change the measure width.
>> Finally, I have created a short reproduceable demo that I can't explain.
>>
>> The script is below.
>> When applied to the score of the attached Finale file, it switches to
>> linked part 3, loads measure 1 and changes its measure width to 360 and
>> then returns to the score.
>> The measure width in the score remains unchanged. So far, everything ok.
>> Then I undo the plug-in in Finale and click on Edit->Redo ...
>> Now the width in measure 1 also changes in the score!
>>
>> Here is a video that shows the effect (with a slightly different version
>> of the score):
>> https://www.youtube.com/watch?v=lPJd3sq9zQg
>>
>> In Perfect Layout it makes Finale's Undo-/Redo feature unusuable, because
>> it (nearly) always changes the measure widths in the score for an unknown
>> reason.
>> Do you have an idea how I can prevent this?
>>
>> Jan
>>
>> --Show measure 1 width from score
>> local meas=finale.FCMeasure(1)
>> meas:Load(1)
>> print("Measure Width in Score",meas.Width)
>>
>> --Load Part 3 and change
>> local p=finale.FCPart(3)
>> p:SwitchTo();
>>     p:ViewInDocument()
>>     meas=finale.FCMeasure(1)
>>     meas:Load(1)
>>     print("Measure Width in Part ",p.ID,meas.Width)
>>     meas.Width=360
>>     meas:Save()
>>     print("Measure Width after change",meas.Width)
>> p:SwitchBack();
>>
>> --Go back to score and show measure 1 width
>> p=finale.FCPart(0)
>> p:ViewInDocument()
>> meas=finale.FCMeasure(1)
>> meas:Load(1)
>> print("Measure Width in Score",meas.Width)
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>>
>
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>
> --
> Jan Angermüller
> Orchideenstieg 13
> 22297 Hamburg
> Tel. 040 - 28 94 84 82
> Mobil 0173 - 99 33 904www.elbsound.studio
>
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