Background
I am using Elixir Desktop (by @dominicletz ) to make an elixir desktop application:
And I am successfully able to launch and manage my app. However, when I close it I always get this error:
[1224/050609.437:ERROR:window_impl.cc(115)] Failed to unregister class Chrome_WidgetWin_0. Error = 203
Problems
There are actually two issues here
- The application takes a very long time to close after I press
Quit. The message is received by Phoenix (see theI AM LEAVINGlog) but for some reason the window takes several seconds to close. - I get the previously mentioned error
Code
At this point 90% of this HelloWorld project is code generated by mix. There are only 2 files I changes that might be relevant here:
menubar.ex
defmodule WebInterface.MenuBar do
@moduledoc """
Menubar that is shown as part of the main Window on Windows/Linux. In
MacOS this Menubar appears at the very top of the screen.
"""
import WebInterface.Gettext
use Desktop.Menu
alias Desktop.Window
@impl Desktop.Menu
def render(assigns) do
~H"""
<menubar>
<menu label={gettext("File")}>
<hr/>
<item onclick="quit"><%= gettext "Quit" %></item>
</menu>
<menu label={gettext("Extra")}>
<item onclick="browser"><%= gettext "Open Browser" %></item>
</menu>
</menubar>
"""
end
@impl Desktop.Menu
def handle_event("quit", menu) do
IO.puts("I AM LEAVING")
Window.quit()
{:noreply, menu}
end
def handle_event("browser", menu) do
WebInterface.Endpoint.url()
|> Window.prepare_url()
|> :wx_misc.launchDefaultBrowser()
{:noreply, menu}
end
@impl Desktop.Menu
def mount(menu) do
{:ok, menu}
end
@impl Desktop.Menu
def handle_info(:changed, menu) do
{:noreply, menu}
end
end
applications.ex
defmodule WebInterface.Application do
# See https://hexdocs.pm/elixir/Application.html
# for more information on OTP Applications
@moduledoc false
use Application
alias Desktop
@impl true
def start(_type, _args) do
children = [
WebInterface.Telemetry,
{Phoenix.PubSub, name: WebInterface.PubSub},
WebInterface.Endpoint,
{Desktop.Window,
[
app: :web_interface,
id: WebInterface,
title: "Web Interface",
size: {600, 500},
menubar: WebInterface.MenuBar,
url: &WebInterface.Endpoint.url/0
]}
]
opts = [strategy: :one_for_one, name: WebInterface.Supervisor]
Supervisor.start_link(children, opts)
end
@impl true
def config_change(changed, _new, removed) do
WebInterface.Endpoint.config_change(changed, removed)
:ok
end
end
I am hoping this error is caused by either a miss configuration or some function I am not implementing correctly.
How can I fix this error?
