I'm searching for a way to create desktop applications with Pharo (no multiple window). Here's the current snippet that do what I want. Improvements / better code is really really welcome. How I can change the title of the window ? The snippet to evaluate in Workspace: counter := Class new superclass: Object; addInstVarNamed: 'counter'; compile: 'initialize counter := 0'; compile: 'counterString ^ counter asString'; compile: 'increment counter := counter + 1. self changed:#counterString'; compile: 'decrement counter := counter - 1. self changed:#counterString'; new. panel := UITheme builder newPanel. panel layoutPolicy: ProportionalLayout new. panel addMorph: (UITheme builder newLabelFor: counter getLabel: #counterString getEnabled: nil) fullFrame: (LayoutFrame fractions: (0@0 corner: 1@0.5)). panel addMorph: (UITheme builder newButtonFor: counter action: #increment label: '+' help: nil) fullFrame: (LayoutFrame fractions: (0@0.5 corner: 0.5@1)). panel addMorph: (UITheme builder newButtonFor: counter action: #decrement label: '-' help: nil) fullFrame: (LayoutFrame fractions: (0.5@0.5 corner: 1@1)). World submorphs do: [:aMorph| aMorph delete]. World layoutPolicy: ProportionalLayout new; addMorph: panel fullFrame: (LayoutFrame fractions: (0@0 corner: 1@1)). Laurent Laffont - @lolgzs <http://twitter.com/#!/lolgzs> Pharo Smalltalk Screencasts: http://www.pharocasts.com/ Blog: http://magaloma.blogspot.com/ Developer group: http://cara74.seasidehosting.st