Could not load a pixbuf from /org/gtk/libgtk/theme/Adwaita/assets/check-symbolic.svg.

[krishna116]

Describe the bug
When build and run a gtkmm application, show error message, the full error message is here:
(002-check-button.exe:9464): Gtk-WARNING **: Could not load a pixbuf from /org/gtk/libgtk/theme/Adwaita/assets/check-symbolic.svg.
This may indicate that pixbuf loaders or the mime database could not be found.

Environment

• OS: win10 x64
• Compiler: vs2019 community.

To Reproduce

1. ./vcpkg install gtkmm
2. create a vs2019 console application, using this code:
   https://developer.gnome.org/gtkmm-tutorial/stable/sec-checkboxes.html.zh_CN
3. build and run it, then click the check-button from this gui application, error happened.

[krishna116]

I have two question:
1, I don't know why this file path is used (/org/gtk/libgtk/theme/Adwaita/assets/check-symbolic.svg)
2, does it have no ability to load svg-files, as issue #8015 said?

[NancyLi1013]

Hi @krishna116
I'm so sorry for the late reply.
Since I'm not familiar with this.
Hope the following issues can help you some.

Related issue #6554, #9127

https://gitlab.gnome.org/GNOME/gtk/-/issues/762

[NancyLi1013]

@krishna116

Please feel free to reopen this issue if it is still a problem for you.

[sousecreto1]

(English)

I solved this problem in my application as follows:
I ran my application created on Windows10 MSYS2, on Wine from Linux Mint.
In the terminal: "wine cmd"
"example_app_GTK.exe"
It returned me on the missing dlls, "librsvg-2-2.dll", "libxml2-2.dll", "liblzma-5.dll".
They were in the "bin" folder inside "mingw64", which is equivalent to: "/ usr / bin".
I copied the dlls to the bin folder of my app and the message "Could not load a pixbuf from /org/gtk/libgtk/theme/Adwaita/assets/check-symbolic.svg" disappeared.
The first time I ran my app in the cmd of wine, the output was that the dlls "librsvg-2-2.dll and libxml2-2.dll" were missing, copied, executed, the same error message continued, but the output in cmd it showed that the dll "liblzma-5.dll" was missing, I copied it, executed it, and everything was perfect, without any more error messages.

(PT_BR)

Eu resolvi esse problema no meu aplicativo da seguinte forma:
Executei meu aplicativo criado no Windows10 MSYS2, no Wine do Linux Mint.
No terminal: "wine cmd"
"example_app_GTK.exe"
Me retornou na sáida que faltava as dlls, "librsvg-2-2.dll", "libxml2-2.dll", "liblzma-5.dll".
Elas estavam na pasta "bin" dentro "mingw64", que é equivalente a: "/usr/bin".
Copiei as dlls para a pasta bin de meu app e desapareceu a mensagem "Could not load a pixbuf from /org/gtk/libgtk/theme/Adwaita/assets/check-symbolic.svg".
Na primeira vez que executei meu app no cmd do wine, a saida foi que as dlls "librsvg-2-2.dll e libxml2-2.dll"estavam faltando, copiei, executei, a mesma mensagem de erro continuava, mas a sáida no cmd mostrava que faltava a dll "liblzma-5.dll", copiei, executei, e ficou tudo perfeito, sem mais mensagens de erros.

[edscott]

After adding the dll's mentioned by sousecreto1, I am still getting the same message. So I added an svg image to my program to see any further explanation. And yes, I get the message that lib\gdk-pixbuf-2.0\2.10.0\loaders\libpixbufloader-svg.dll cannot be found.

There are various suspicious websites which offer to "fix" the problem. But the safe way is to install gimp for windows, then copy gimp\lib\gdk-pixbuf-2.0\2.10.0\loaders\libpixbufloader-svg.dll to where gdk can find it.

Funny, this is not the directory where the program is being run.
In my case, I copied the dll to the subdir: lib\gdk-pixbuf-2.0\2.10.0\loaders and all svg images load properly.

Extra bonus: apparently gimp also has a dll to render windows meta files. I guess this could work to create GtkImage from any wmf. I have not tried this, as it is of no use to me.