Using LibGlade support in LablGtk2

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I played with the following glade example files from LablGtk2:

  1. gladecalc.ml
  2. project2.glade

You can find them from the liblablgtk2-ocaml-dev package if you are using Debian Gnu/Linux Sid.

To run the gladecalc.ml you should do the following first:

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lablgladecc2 -embed project2.glade > project2.ml

then you can run gladecalc.ml:

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lablgtk2 -thread gladecalc.ml

This might not be very useful if you want to deploy your own LablGtk2 applications and the clients don't have OCaml toplevel installed: lablgtk2 is just a shell script wrapped around OCaml toplevel after all.

In our case, to compile gladecalc.ml into a native executable, we should first change the code a little bit. The #use directive in line 6 of gladecalc.ml works only for OCaml toplevel, so comment it out and add a new line:

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(* #use "project2.ml";; *)
open Project2

then use ocamlopt to compile:

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ocamlopt -I +lablgtk2 lablgtk.cmxa lablglade.cmxa gtkInit.cmx project2.ml gladecalc.ml -o gladecalc

this produces a single executable "gladecalc" without OCaml dependencies.