本文展示了一个使用Ruby语言创建简单GUI应用程序的例子，通过System.Windows.Forms库实现鼠标进入和离开事件的响应。
require 'System.Windows.Forms'
include System::Windows::Forms
class RForm < Form
end
f = RForm.new
ome = proc {|sender, e| puts "Enter"}
oml = proc {|sender, e| puts "Leave"}
f.mouse_enter(&ome)
f.mouse_leave(&oml)
include System::Windows::Forms
class RForm < Form
end
f = RForm.new
ome = proc {|sender, e| puts "Enter"}
oml = proc {|sender, e| puts "Leave"}
f.mouse_enter(&ome)
f.mouse_leave(&oml)
Application.run(f)
~~THE END~~
尹曙光
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