1.4.0 bug? imglist no longer converts delphi image lists correctly?
lazarus / 10-Designer

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MISV · 2015-05-02 10:46

if I load my project file into lazarus that opens a dfm form with
imagelist then:

In 1.2.6 the imagelist would be converted to lazarus format (and could
no longer be read in Delphi forcing a separate lfm file)
In 1.4.0 the image content is no longer correctly converted? and I get
errors when either running the project... or save-project/load-project
clears all images. (However, in the inital conversion/loading the
images are found in the imagelist)

I will try make a more detailed bug report / question, but just wanted
to hear if anyone else experienced this?

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JuhaManninen · 2015-05-02 11:55

Do you use the Delphi converter or just load a Delphi form without
conversion?

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MISV · 2015-05-02 12:34

The latter - but it worked in the past. Beyond that issues, I have it
almost perfectly opening Delphi forms without promting any errors and
otherwise showing correctly.

(To do this, I sometimes wrap standard components, e.g. TmisvCheckBox
or whatever and then declare/implement missing properties for
FP/Lazarus)

Huge #win if doing cross-tool development

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JuhaManninen · 2015-05-02 14:32

Quote from: MISV on May 02, 2015, 02:34:54 pmThe latter - but it
worked in the past. Beyond that issues, I have it almost perfectly
opening Delphi forms without promting any errors and otherwise showing
correctly.

Yes, I think this is a bug and should be reported with an example.

Quote(To do this, I sometimes wrap standard components, e.g.
TmisvCheckBox or whatever and then declare/implement missing
properties for FP/Lazarus)
Huge #win if doing cross-tool development

Hmmm... you cannot use the original Delphi project as is, you must
install those Tmisv... components also in Delphi and replace them in
the project.
I believe it is worth the effort in some cases.
Do you want to maintain such a compat. library for lazarus?

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MISV · 2015-05-04 10:33

I will try see if I can generate a better report than this - i.e. try
figure out what exactly is causing the problem.

...

Yes, I install my "wrapper" components in both Delphi and Lazarus.
Sometimes I may reimplement, but most of the incompabilities can be
ignored, so I just make sure the values are kept. In Delphi they are
then used and Lazarus can ignore them.

(In my case, I am also trying to get compability with components I
made maybe 1-10 years ago that has increased features compared to
Delphi, so I have a lot of extra "bloat" compared to what standard
wrappers would have)

I can try see what I have and collect it.

...

Personally I think Lazarus is *extremely* close in having full dfm
compability, so while the converter is of course important, cross-tool
development is within reach if it was pursued. One problem that also
existed in 1.2.6 was that imagelists was saved in Lazarus format even
if read/streamed in as Delphi. I am not sure there is an easy fix
though - it would take some studying and not just a quick look fix, so
I understand why it is as it is. Just unfortunate. I may also take
another stab at that some day

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MISV · 2015-05-05 18:25

Okay, I have posted more here:

http://forum.lazarus.freepascal.org/index.php/topic,28316.0.html

early code for a "TmisvImageList" and an attempt on streaming back to
Delphi compatible DFM if the imagelist format was Delphi when
loaded/read by Lazarus