1%%
2%% %CopyrightBegin%
3%%
4%% Copyright Ericsson AB 2009-2018. All Rights Reserved.
5%%
6%% Licensed under the Apache License, Version 2.0 (the "License");
7%% you may not use this file except in compliance with the License.
8%% You may obtain a copy of the License at
9%%
10%%     http://www.apache.org/licenses/LICENSE-2.0
11%%
12%% Unless required by applicable law or agreed to in writing, software
13%% distributed under the License is distributed on an "AS IS" BASIS,
14%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15%% See the License for the specific language governing permissions and
16%% limitations under the License.
17%%
18%% %CopyrightEnd%
19%%
20%%%-------------------------------------------------------------------
21%%% File    : hello.erl
22%%% Author  : Matthew Harrison <harryhuk at users.sourceforge.net>
23%%% Description : _really_ minimal example of a wxerlang app
24%%%               implemented with wx_object behaviour
25%%%
26%%% Created :  18 Sep 2008 by  Matthew Harrison <harryhuk at users.sourceforge.net>
27%%%            Dan rewrote it to show wx_object behaviour
28%%%-------------------------------------------------------------------
29-module(hello2).
30-include_lib("wx/include/wx.hrl").
31
32-export([start/0,
33         init/1, handle_info/2, handle_event/2, handle_call/3,
34         code_change/3, terminate/2]).
35
36-behaviour(wx_object).
37
38-record(state, {win}).
39
40start() ->
41    wx_object:start_link(?MODULE, [], []).
42
43%% Init is called in the new process.
44init([]) ->
45    wx:new(),
46    Frame = wxFrame:new(wx:null(),
47			-1, % window id
48			"Hello World", % window title
49			[{size, {600,400}}]),
50
51    wxFrame:createStatusBar(Frame,[]),
52
53    %% if we don't handle this ourselves, wxwidgets will close the window
54    %% when the user clicks the frame's close button, but the event loop still runs
55    wxFrame:connect(Frame, close_window),
56
57    ok = wxFrame:setStatusText(Frame, "Hello World!",[]),
58    wxWindow:show(Frame),
59    {Frame, #state{win=Frame}}.
60
61
62%% Handled as in normal gen_server callbacks
63handle_info(Msg, State) ->
64    io:format("Got Info ~p~n",[Msg]),
65    {noreply,State}.
66
67handle_call(Msg, _From, State) ->
68    io:format("Got Call ~p~n",[Msg]),
69    {reply,ok,State}.
70
71%% Async Events are handled in handle_event as in handle_info
72handle_event(#wx{event=#wxClose{}}, State = #state{win=Frame}) ->
73    io:format("~p Closing window ~n",[self()]),
74    ok = wxFrame:setStatusText(Frame, "Closing...",[]),
75    wxWindow:destroy(Frame),
76    {stop, normal, State}.
77
78code_change(_, _, State) ->
79    {stop, not_yet_implemented, State}.
80
81terminate(_Reason, _State) ->
82    ok.
83
84