Re: Can't launch Rosegarden

Thanks for the link Ted but I'm afraid I didn't glean anything useful 
there...

RG 21.12 runs ok on this system (lying around in /usr/local/bin)

Rosegarden version: 21.12 ("Cloud Nine")
Build key: ac38e2622f (21.06-24-gb9da2db9d)
Built against Qt version: 5.15.2

Current version info is:

Rosegarden version: 24.12 ("Incredible")
Build key: 442818511e (24.06-1-gf91b7e227)
Built against Qt version: 5.15.13

How would I be "requesting the gtk widgets"? I am not aware of having, 
or how I would have, done so...

I assume that my RG preferences would be applied the same to both of the 
above versions?

TIA

Chuck.



On 07/06/2024 7:14 pm, Ted Felix wrote:
> Just some limited searching seems to indicate that the "gtk" widget 
> style was dropped around Qt 5.7 or so.  Maybe you're running a newer 
> version of Qt and you are requesting the gtk widgets?
>
> https://bbs.archlinux.org/viewtopic.php?id=214147&p=2
>
>   See post #36.
>
>   All the trails are from 2016/2017, though.  Not sure they are 
> relevant today.
>
> Ted.
>
> On 6/7/24 6:24 AM, chuck elliot wrote:
>> Rosegarden won't run at the moment.
>>
>> The problem seems to be something to do with "GtkWidget" (see below).
>>
>> 24.06 built fine from git source.
>>
>> I have recently upgraded to fedora 39 and this is probably the first 
>> time I have tried to
>>
>> run RG since. Same result on a similar/identical system.
>>
>>
>> gtk3-3.24.41-1.fc39.x86_64
>>
>> gtk4-4.12.5-1.fc39.x86_64
>>
>> RG output:
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.844: cannot 
>> register existing type 'GtkWidget'
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.844: cannot 
>> add class private field to invalid type '<invalid>'
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.844: cannot 
>> add private field to invalid (non-instantiatable) type '<invalid>'
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.844: 
>> g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE 
>> (instance_type)' failed
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.844: cannot 
>> register existing type 'GtkBuildable'
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.844: 
>> g_type_interface_add_prerequisite: assertion 'G_TYPE_IS_INTERFACE 
>> (interface_type)' failed
>>
>> (rosegarden:725222): GLib-CRITICAL **: 11:12:47.844: 
>> g_once_init_leave: assertion 'result != 0' failed
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.844: 
>> g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE 
>> (instance_type)' failed
>>
>> (rosegarden:725222): Gtk-CRITICAL **: 11:12:47.859: 
>> gtk_widget_get_style_context: assertion 'GTK_IS_WIDGET (widget)' failed
>>
>> (rosegarden:725222): Gtk-CRITICAL **: 11:12:47.859: 
>> gtk_style_context_lookup_color: assertion 'GTK_IS_STYLE_CONTEXT 
>> (context)' failed
>>
>> (rosegarden:725222): Gtk-CRITICAL **: 11:12:47.868: 
>> gtk_style_context_get_background_color: assertion 
>> 'GTK_IS_STYLE_CONTEXT (context)' failed
>> qt.qpa.gtk: Property name "theme_unfocused_bg_color" not found.
>>   Falling back to  QGtk3Interface::QGtkColorDefault::Background
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.868: cannot 
>> register existing type 'GtkWidget'
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.868: cannot 
>> add class private field to invalid type '<invalid>'
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.868: cannot 
>> add private field to invalid (non-instantiatable) type '<invalid>'
>>
>> (rosegarden:725222): GLib-GObject-CRITICAL **: 11:12:47.868: 
>> g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE 
>> (instance_type)' failed
>> -DCMAKE_BUILD_TYPE=Debug-DCMAKE_BUILD_TYPE=Debug-DCMAKE_BUILD_TYPE=Debugqt.qpa.events.reader: 
>> [heap]  0
>>
>>
>>
>>
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