Old code: Smalltalk isMorphic ifTrue: [self buildMorphicViewOn: aSyntaxError. CurrentProjectRefactoring newProcessIfUI: Processor activeProcess. ^ Processor activeProcess suspend]. I started with: self buildViewOn: aSyntaxError. "Using Polymorph?" UIManager default spawnNewProcessIfThisIsUI: Processor activeProcess. ^ Processor activeProcess suspend. But #spawnNewProcessIfThisIsUI: is only defined for MorphicUIManager, which delegates to Project (I didn't know Project was even still in the image). It seems the UIManager hierarchy needs to be cleaned, but I don't understand it well enough. Some questions: * why does Project still exist? It doesn't seem very useful... * does Project play well with UIManager e.g. if DummyUIManager is active, does Project answer nil to #uiProcess? * is it reasonable to have a default UIManager>>#spawnNewProcessIfThisIsUI: that doesn't do anything, and override in UIManagers with UIs? Sean -- View this message in context: http://forum.world.st/How-to-port-this-code-to-1-3-tp3954648p3954648.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.