30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
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Ruby/Tk does NOT support forking the process on which Tk interpreter
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is running (unless NEVER control Tk interpreter under the forked child
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process). In the library 'tk.rb', a Tk interpreter is initialized.
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Therefore, if you want running Tk under a child process, please call
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"require 'tk'" in the child process.
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For example, the following sample1 will NOT work, and sample2 will
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work properly.
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---<sample1: NOT work>---------------------------------------
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require 'tk' ## init Tk interpreter under parent process
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exit! if fork ## exit parent process
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## child process
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TkButton.new(:text=>'QUIT', :command=>proc{exit}).pack
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Tk.mainloop
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-------------------------------------------------------------
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---<sample2: will work>--------------------------------------
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exit! if fork ## exit main process
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## child process
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require 'tk' ## init Tk interpreter under child process
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TkButton.new(:text=>'QUIT', :command=>proc{exit}).pack
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Tk.mainloop
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-------------------------------------------------------------
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2004/04/20 Hidetoshi NAGAI
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