Application crashes with `GTK+ 2.x symbols detected` when using gio

[hrueschwein]

I'm making GUI application with Gio that uses GTK on linux, and application crashes on start (it's building well, breakes in dialog.init())

Stderr

(projectName:16641): Gtk-ERROR **: 18:56:14.917: GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported
SIGTRAP: trace trap
PC=0x7eff8415d92f m=0 sigcode=128
signal arrived during cgo execution
goroutine 1 [syscall, locked to thread]:

runtime.cgocall(0x6f0e60, 0xc0000ddd00)

/usr/lib/go-1.18/src/runtime/cgocall.go:157 +0x5c fp=0xc0000ddcd8 sp=0xc0000ddca0 pc=0x42b2bc

github.com/sqweek/dialog._Cfunc_gtk_init(0x0, 0x0)

_cgo_gotypes.go:372 +0x45 fp=0xc0000ddd00 sp=0xc0000ddcd8 pc=0x6c26e5

github.com/sqweek/dialog.init.0()

/home/dikey0ficial/go/pkg/mod/github.com/sqweek/dialog@v0.0.0-20220227145630-7a1c9e333fcf/dlgs_linux.go:19 +0x30 fp=0xc0000ddd20 sp=0xc0000ddd00 pc=0x6c2af0

runtime.doInit(0xc2c4a0)

/usr/lib/go-1.18/src/runtime/proc.go:6222 +0x126 fp=0xc0000dde50 sp=0xc0000ddd20 pc=0x46a326

runtime.doInit(0xc300a0)

/usr/lib/go-1.18/src/runtime/proc.go:6199 +0x71 fp=0xc0000ddf80 sp=0xc0000dde50 pc=0x46a271

runtime.main()

/usr/lib/go-1.18/src/runtime/proc.go:233 +0x1d3 fp=0xc0000ddfe0 sp=0xc0000ddf80 pc=0x45d3d3

runtime.goexit()

/usr/lib/go-1.18/src/runtime/asm_amd64.s:1571 +0x1 fp=0xc0000ddfe8 sp=0xc0000ddfe0 pc=0x489001
rax    0x0

rbx    0x1

rcx    0xf

rdx    0x1629f33

rdi    0x7

rsi    0x15d0010

rbp    0x7fff5a833da0

rsp    0x7fff5a833d00

r8     0x1643240

r9     0x0

r10    0x7eff84af4040

r11    0x31c9c6bcdbafd93b

r12    0x6

r13    0x0

r14    0x7eff84231cc8

r15    0x7eff84231d50

rip    0x7eff8415d92f

rflags 0x202

cs     0x33

fs     0x0

gs     0x0

exit status 2

Enviroment info:
OS: Kubuntu 21.10 x86_64
Go: go1.18.1 linux/amd64
dialog version: v0.0.0-20220227145630-7a1c9e333fcf
gio version: v0.0.0-20220412071142-25fae8de30be
GTK3 version: 3.24.30
GTK2 version: 2.24.33

[sqweek]

dialog uses gtk3 so that is presumably causing the conflict. But I previously used gtk2, so give commit f33030e a try.

dialog development is slow so I don't think this version is missing any critical features/bug fixes, but it also probably wouldn't be much work to take HEAD and replace the current gtk backend with the gtk2 version. Ideally dialog would let you select the version I guess, but I'm unlikely to find time to look into support for backend selection

[hrueschwein]

Hello!
I tried this. after a lot errors in console about deprecated API, this worked, but window is weird :)

P.S. Now I'm using ncurces/zenity, but I like this library more because of clearer syntax and many projects with it :)

[sqweek]

I don't understand what the screenshot is trying to tell me -- what is weird about it?

[hrueschwein]

what is weird about it?

icons are white and have to little width :)

[sqweek]

FYI I now have a project which uses dialog in conjunction with gio and haven't seen any issues on linux. Version info:

Linux version: Centos 7.7.1908
Go version: 1.21.0 (also 1.18.1)

github.com/sqweek/dialog v0.0.0-20220809060634-e981b270ebbf
gioui.org v0.1.0

GTK3 version: 3.24.26
GTK2 version: none

I don't know if gio has moved on or if something else in your project is relying on gtk2