nimforum mirror - glib2 foxes TableRef

geezer9 (orginal) [2017-05-21T21:39:36+02:00] view original

when the following is compiled via nim -r c

# Nim Compiler Version 0.17.0 (2017-05-17) [Linux: amd64]

import strutils, tables

import gtk2
import gdk2
import glib2

type
    Foo = object
      size:int
      stuff:TableRef[string,string]

var zap:Foo

echo "nothing to do"

I get this error:

Error: cannot instantiate TableRef
got: (proc (drawable: PDrawable, font: PFont, gc: PGC, x: gint, y: gint, text: cstring, text_length: gint){.cdecl, gcsafe.} | string, proc (drawable: PDrawable, font: PFont, gc: PGC, x: gint, y: gint, text: cstring, text_length: gint){.cdecl, gcsafe.} | string)
but expected: (A, B)

but commenting out the import glib2 line produces a result that compiles and runs. I've tried different import orders but that seems not to be relevant. The gtk2 package was installed via nimble a few days ago (today=5-21-2017). A more complex version of this (on an older linux box) was working several months ago.

Is there a workaround?

Stefan_Salewski (orginal) [2017-05-22T08:39:00+02:00] view original

That is an interesting bug. Currently I have no guess for the reason.

I just tried compile with GTK3 from

https://github.com/ngtk3

by modifying code to

import gtk3
import gdk3
import glib

Compiles and works fine.

Nim Compiler Version 0.17.0 (2017-05-19) [Linux: amd64]

Well, when you like old GTK2 still, you may like Nim v 0.16 or older too :-)

If not, maybe try deleting repeatly some code lines from glib until error vanish. And tell Araq or Dom the exact line number which causes the problem.

If you really like GTK, you may test a high level Nim GTK3 module soon.

Stefan_Salewski (orginal) [2017-05-22T09:42:37+02:00] view original

Well, you blamed glib2 module.

But my guess would be gdk2 with

proc string*(drawable: PDrawable, font: PFont, gc: PGC, x: gint,
                      y: gint, text: cstring, text_length: gint){.cdecl, dynlib: lib,
importc: "gdk_draw_string".}

You may try

import gdk2 except string

or delete that entry from module gdk2.

geezer9 (orginal) [2017-05-22T21:56:35+02:00] view original

To Stefan,

YES - you saved me!! - that did it - many thanks

I need a lightweight/cross platform/somewhat native/gui module that allows DOM <table> like layouts - which ruled out FLTK 1.x. Gtk is a heavy installation on non-nix platforms.

At the time I decided on the Linux version of my DIY module, gtk3 had some complaints, so I used gtk2. The MSW version goes directly to its API. I have no clue as how to do OS X.

Is gtk2 now deprecated or just unfavored?

Araq (orginal) [2017-05-29T07:59:12+02:00] view original

Is gtk2 now deprecated or just unfavored?

Just unfavored, I would say.

Quite a concerning bug, was it reported on github?

Mirror of forum.nim-lang.org

2966 :: glib2 foxes TableRef