Buttton icon missing

[riban-bw]

Compiling on Raspberry Pi Debian Bullseye there are no warnings during configure or compile but the button to start recording has a placeholder icon, not the application start icon.

After starting recording the icon disappears and the button collapses to a thin strip.

This makes it rather tricky to click.

[swh]

It sounds like the pixmaps directory isn't being installed into the place the code expects it to be?

Sorry, this code is ancient, and I've not used GTK in 10+ years, so I can't remember how it's supposed to work.

It looks like they should be installed in $(datadir)/timemachine/pixmaps, so maybe check the generated .h files and your filesystem to see if they line up?

[riban-bw]

Thanks for the prompt response to something you haven't looked at in a long while! I now see that the files are installed correctly but the application is not recognising the PNG file format:
Failed to load pixbuf file: pixmaps/on.png: Couldn’t recognise the image file format for file “pixmaps/on.png”
so maybe a library isn't installed. libpng-dev is installed so not sure what is missing.

I appreciate this isn't high on your priority list - it isn't really on mine but I am intrigued to see what the issue is.

[atsampson]

GTK loads images using the gdk-pixbuf library, which has plugins for various image formats. The gdk-pixbuf-query-loaders command will show which ones are installed on your system - it should include libpixbufloader-png.so. On my Debian machine that's provided by the libgdk-pixbuf2.0-0 package (same as the base library, so you should have it installed)...

[riban-bw]

gdk-pixbuf-query-loaders is not installed (or in the default path) on Debian on Raspberry Pi. I didn't find a result in apt-cache search gdk-pixbuf-query-loaders.