GTK/Development

Write a simple message dialog app

You can write your own GTK 3 message dialog easily in many programming languages through GObject-Introspection or bindings, or you can simply use bash.

The following examples display a simple "Hello world" in a message dialog.

Ada

• Dependency: gtkada^AUR
• Makedependency: gcc-ada
• Build with: gnatmake hello_world `gtkada-config`

hello_world.adb

with Gtk.Main;
with Gtk.Dialog;           use Gtk.Dialog;
with Gtk.Message_Dialog;   use Gtk.Message_Dialog;

procedure hello_world is
  Dialog   : Gtk_Message_Dialog;
  Response : Gtk_Response_Type;
begin
  Gtk.Main.Init;
  Gtk_New (Dialog   => Dialog,
           Parent   => null,
           Flags    => 0,
           The_Type => Message_Info,
           Buttons  => Buttons_OK,
           Message  => "Hello world!");
  Format_Secondary_Markup (Dialog, "This is an example dialog.");
  Response := Run (Dialog);
end hello_world;

Bash

• Dependency: zenity

hello_world.sh

#!/bin/bash
zenity --info --title='Hello world!' --text='This is an example dialog.'

BASIC

• Dependency: gtk3
• Makedependency: freebasic-gnomeheaders^AUR
• Build with: fbc hello_world.bas

hello_world.bas

#include "Gir/Gtk-3.0.bi"
Dim As GtkWidget Ptr hello
gtk_init (cast(gint ptr, @__fb_argc__), @__fb_argv__)
hello = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL, GTK_MESSAGE_INFO, GTK_BUTTONS_OK, "Hello world!")
gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (hello), "This is an example dialog.")
gtk_dialog_run (GTK_DIALOG (hello))

Boo

• Dependency: (and boo^AUR)
• Makedependency: boo^AUR
• Build with:
• Run with: (or )

hello_world.boo

import Gtk from "gtk-sharp"
Application.Init()
Hello = MessageDialog(null, DialogFlags.Modal, MessageType.Info, ButtonsType.Ok, "Hello world!")
Hello.SecondaryText = "This is an example dialog."
Hello.Run()

C

• Dependency: gtk3
• Build with: gcc -o hello_world $(pkg-config --cflags --libs gtk+-3.0) hello_world.c

C++

• Dependency:
• Build with:

C#

• Dependency:
• Build with:
• Run with:

Clojure

• Dependencies: ,
• Run with:

project.clj

(defproject hello-world "0.1.0-SNAPSHOT"
  :main hello-world.core
  :dependencies [[org.clojure/clojure "1.10.3"]]
  :resource-paths ["/usr/share/java/gtk.jar"])

Crystal

• Dependency: gtk3
• Makedependencies: , crystal-gobject
• Build with:

D

• Dependency: gtkd
• Makedependency:
• Build with:

F#

• Dependency:
• Run with:

hello_world.fsx

#r "nuget: GtkSharp"
open Gtk

let main () =
  Application.Init()
  let Hello = new MessageDialog(null, DialogFlags.Modal, MessageType.Info, ButtonsType.Ok, "Hello world!")
  Hello.SecondaryText <- "This is an example dialog."
  Hello.Run() |> ignore

main ()

Fortran

• Dependency:
• Makedependency:
• Build with:

Genie

• Dependency: gtk3
• Makedependency:
• Build with:

Go

• Dependency: gtk3
• Makedependency: gotk3-git^AUR or
• Build with: go build hello_world.go
• (Or run with: )

Groovy

• Dependencies: ,
• Build with:
• Run with: or

HelloWorld.groovy

import org.gnome.gtk.*
Gtk.init()
def Hello = new InfoMessageDialog(null, "Hello world!", "This is an example dialog.")
Hello.run()

Haskell

• Dependency: gtk3
• Makedependency:
• Build with:

hello_world.hs

import Graphics.UI.Gtk
main = do
         initGUI
         dialog <- messageDialogNew Nothing [DialogModal] MessageInfo ButtonsOk "Hello world!"
         messageDialogSetSecondaryText dialog "This is an example dialog."
         _res <- dialogRun dialog
         return 0

IronPython

• Dependencies: ,
• Run with:

Java

• Dependency:
• Makedependency: java-environment
• Build with:
• Run with:

JavaScript

GJS:

• Dependencies: gtk3,

Node.js:

• Dependencies: gtk3, nodejs, node-gtk

JRuby

• Dependencies: , jruby
• Build with:
• Run with: or

Julia

• Dependencies: , Gtk.jl
• Run with:

Jython

• Dependencies: ,
• Run with: jython -Dpython.path=/usr/share/java/gtk.jar hello_world.py

Kotlin

• Dependency:
• Makedependency:
• Build with:
• Run with:

HelloWorld.kt

import org.gnome.gtk.*

fun main(args : Array<String>) {
        Gtk.init(args);
        val Hello = InfoMessageDialog(null, "Hello world!", "This is an example dialog.");
        Hello.run();
}

Lua

• Dependencies: gtk3,

Nemerle

• Dependency:
• Makedependency: nemerle^AUR
• Build with:
• Run with:

OCaml

• Dependency: gtk3
• Makedependency:
• Build with:

Pascal

• Dependency: gtk3
• Makedependencies: fpc, GTK 3.0 bindings
• Build with:

Perl

• Dependency:

hello_world.pl

#!/usr/bin/env perl
use Gtk3 -init;
my $hello = Gtk3::MessageDialog->new (undef, 'modal', 'info', 'ok', "Hello world!");
$hello->set ('secondary-text' => 'This is an example dialog.');
$hello->run;

Prolog

• Dependency:
• Run with:

Python

• Dependencies: gtk3,

Ruby

• Dependency: gtk3, ruby-gir_ffi-gtk^AUR

• Dependency:

Rust

Using Gtk-rs.

• Dependency: gtk3
• Makedependency: rust
• Build with:
• Run with: or

Scala

• Dependency: (and )
• Makedependency:
• Build with:
• Run with: (or scala -cp /usr/share/java/gtk.jar HelloWorld.scala)

Vala

• Dependency: gtk3
• Makedependency:
• Build with:

Visual Basic

• Dependency:
• Makedependency: mono-basic^AUR
• Build with:
• Run with:

See also

• GNOME Developer Center
• GTK 3 Reference Manual
• gtkmm 3 Tutorial