From: Michael Witrant <mike@...>
Date: 2001-09-22T22:11:34+09:00
Subject: [ruby-talk:21530] Win32: rubyw.exe and exceptions in a message box

Hello,

Since rubyw.exe cannot output anything (no console), fixing unhandled
exception is boring. It would help if it displayed unhandled exceptions
in a native Windows message box. I wrote a small ebox.rb script (see
below) and replaced the .rbw association to "c:\ruby\bin\rubyw.exe"
"C:\ruby\lib\ruby\site_ruby\1.6\ebox.rb" "%1" %*

It now displays a message box on error, even parse errors.

Do you think it should be the default behavior of rubyw.exe?
Can it break anything in the executed script?
Does it work on any win32 version? I'm using Win98.

Mike.
midulo.

-------

# ebox.rb: Run ARGV.shift and print exception in a Windows MessageBox if
it occurs.
begin
	script = ARGV.shift
	raise ArgumentError, "usage: #$0 <file> <args...>" if script.nil?
	$0 = script
	load script
rescue Exception => e
	require 'Win32API'
	message_box = Win32API.new("user32", "MessageBox", ['i','p','p','i'],
'i')
	icon_error = 0x00000010
	message = "An error occured while running #$0:\n"
	message << "#{e.message} (#{e.class}) in:\n"
	message << e.backtrace.join("\n")
	message_box.call(0, message, "Ruby: Unhandled exception", icon_error)
end