Can not control compiling with or without enabeling themes.
lazarus / 34-Windows

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han · 2024-05-19 10:21

My application is normally compiled in a version with enabled themes
and without enabled themes. Currently I have no control over this
behavior. Sometimes it compiles with themes enabled sometimes
without.  The setting in the project options is ignored. This happens
using Lazarus 3.2 and 2.24. Is seems related to my application.
Testing an example program does not show this problem.

Anybody an idea what could cause this? Where to look?

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dsiders · 2024-05-19 19:43

Quote from: han on May 19, 2024, 12:21:16 pmMy application is normally
compiled in a version with enabled themes and without enabled themes.
Currently I have no control over this behavior. Sometimes it compiles
with themes enabled sometimes without.  The setting in the project
options is ignored. This happens using Lazarus 3.2 and 2.24. Is seems
related to my application. Testing an example program does not show
this problem.

Anybody an idea what could cause this? Where to look?

Look at the Project Options > Use manifest resource (and enable
themes) check box. Checked for theme. Unchecked for no theme.

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han · 2024-05-26 10:52

Quote  Look at the Project Options > Use manifest resource (and enable
themes) check box. Checked for theme. Unchecked for no theme.
Yes I have used that for years but the compiler doesn't follow this
check-mark anymore. I'm flabbergasted. I use two *.lpi Lazarus files
for two versions of my program. Sometimes I get two programs with
themes enabled. Sometimes two programs with themes disabled. I tried
to delete *.ppu, *.ppl. *.o and the executable between compiling the
second version but it doesn't help.

If I check or uncheck themes in the IDE, project options it doesn't
work always. It looks random to me.

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KodeZwerg · 2024-05-26 11:27

I am unsure if it helps and if I understood, so here is what I do:
- open project
- change option(s), including your problematic one
- save project
- build project [SHIFT-F9] (not compile)
- test project (run)

I assume you do just run/F9/compile to test, that way the resources
are not recompiled all-the-time correct so it uses an old one where
the changes arent updated yet.

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han · 2024-05-26 15:21

In tried almost everything including clean up and build. Still it
stubborn sometimes enable themes always sometimes not.

For example i have prepared two application.lpi files. So

application.lpi
and
application_themes.lpi

If I compile them as

d:\lazarus\lazbuild -B application.lpi

d:\lazarus\lazbuild -B application_themes.lpi

Sometimes both commands produce an application with themes enabled
sometimes not. Deleting the executable between the compiling test
doesn't help. The application with themes enabled is about 2 kbyte
larger.  But I'm not ware if there is any log lines showing the
enabling themes is successful/done.

Above problem is repeatable in the IDE. But toggeling the option seems
to help.

If themes is disabled this is missing in the *.lpi:

<UseXPManifest Value="True"/>

Since toggling helps, I have the impression that the themes enabling
is stored at an other location then the *.lpi or *.lpr file. Deleting
the application.res doesn't help.

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han · 2024-05-26 15:54

The problem becomes clearer.  Using the same source I have two
configuration sets:

application.lpi
application.lpr


application_themes.lpi
application_themes.lpr


They differ in the *.lpi file only by <UseXPManifest Value="True"/>
However that doesn't seems to control the compiling with or without
themes. It is somewhere else stored. 

So if the themes is disabled and I open application_themes.lpi then
themes look enabled but it doesn't work. Only if I do the following
toggeling it works:


Disable themes
Build
Enable themes
Build, run

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han · 2024-05-26 17:32

I have found the solution.

In the .lpi file there is a link to the .lpr file. If I modify in
application_themes.lpi the link as follows:

- <Filename Value="application.lpr"/>
+ <Filename Value="application_themes.lpr"/>

Then the problem is gone. The option themes=enabled add to the .lpr
file the following line:

{$R *.res} 

This seems to enable themes. If check-mark themes is disabled this {$R
*.res}  is removed again. So just ensure in the .lpi the correct .lpr
is specified. That's all.