import clr
clr.AddReference("System.Windows.Forms")
clr.AddReference("System.Drawing")
from System.Windows import Forms
from System import Drawing

class HelloForm(Forms.Form):
    def __init__(self):
        self.Size = Drawing.Size( 640, 480 )
        self.Text = 'Hello, World!'
        label1 = Forms.Label()
        label1.Size = Drawing.Size( 320, 20 )
        label1.Text = 'Hello, Windows Forms(IronPython) World!'
        self.Controls.Add( label1 )

if __name__ == '__main__':
    form = HelloForm()
    Forms.Application.Run(form)