diff options
Diffstat (limited to 'ext/tk/sample/tkextlib/bwidget/select.rb')
| -rw-r--r-- | ext/tk/sample/tkextlib/bwidget/select.rb | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/ext/tk/sample/tkextlib/bwidget/select.rb b/ext/tk/sample/tkextlib/bwidget/select.rb index e25ab5c354..a04d8da482 100644 --- a/ext/tk/sample/tkextlib/bwidget/select.rb +++ b/ext/tk/sample/tkextlib/bwidget/select.rb @@ -1,6 +1,9 @@ # # select demo --- called from demo.rb # +unless Object.const_defined?('DemoVar') + fail RuntimeError, "This is NOT a stand alone script. This script is called from 'demo.rb'. " +end module DemoSelect @@var = TkVariable.new_hash |