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Make thread_tk.rb check whether tk already set to run on main thread #53

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Nov 9, 2023
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Make thread_tk.rb check whether tk already set to run on main thread #53

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5 changes: 5 additions & 0 deletions lib/thread_tk.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -4,5 +4,10 @@
# main thread. That is, when "require 'thread_tk'" is executed instead
# of or before "require 'tk'", "Thread.new{Tk.mainloop}" works properly.
#

if defined?(TkCore::RUN_EVENTLOOP_ON_MAIN_THREAD) && TkCore::RUN_EVENTLOOP_ON_MAIN_THREAD
raise LoadError, "thread_tk.rb must be loaded before tk.rb"
end

module TkCore; RUN_EVENTLOOP_ON_MAIN_THREAD = false; end
require 'tk'