Just for fun read the below piece of code :) SystemProgressMorph>>label: shortDescription min: startMinValue max: startMaxValue "Answer the block that updates the progress bar." "some fun stuff added (by kph) - bar value: #label. - tell me my current label. - bar value: 'newLabel'. - enable changing the label from within the workBlock - bar value: #increment. - enable progress by one without keeping a counter - bar value: #decrement. - go backwards (if you really have to, useful for an abort, or rollback)! - bar value: newBigNum. - change the max on the fly - when you find there is more to do. - bar value: (bar value: #setMax) + 20 - change the max on the fly - when you find there is more/less to do. - bar value: (bar value: #setMin) - 20 - change the min on the fly - not sure why you would want to. " | slot range barSize lastRefresh maxValue minValue bar| maxValue := startMaxValue. minValue := startMinValue. ((range := maxValue - minValue) <= 0 or: [(slot := self nextSlotFor: shortDescription) = 0]) ifTrue: [^[:barVal| 0 ]]. self recenter. self openInWorld. barSize := -1. "Enforces a inital draw of the morph" lastRefresh := Time millisecondClockValue. bar := bars at: slot. ^[:barValArg | | barVal return newBarSize | barVal := barValArg. return := nil. bar := bars at: slot. "new fun stuff here" barVal == #current ifTrue: [ return := barSize ]. barVal == #label ifTrue:[ return := (labels at: slot) contents ]. barVal == #setMax ifTrue: [ return := maxValue. maxValue := minValue ]. barVal == #setMin ifTrue: [ return := minValue. minValue := maxValue ]. barVal == #increment ifTrue: [return := barVal := barSize + 1]. barVal == #decrement ifTrue: [ return := barVal := barSize - 1]. (barVal isString and: [barVal isSymbol not]) ifTrue: [ (labels at: slot) contents: barVal. barVal := #refresh]. barVal == #refresh ifTrue: [self currentWorld displayWorld. return := true]. (barVal == SmallInteger maxVal or: [ barVal == #finished ]) ifTrue: [return := slot]. return ifNil: [ barVal > maxValue ifTrue: [return := maxValue := barVal]. barVal < minValue ifTrue: [return := minValue := barVal]. (barVal between: minValue and: maxValue) ifTrue: [newBarSize := (barVal - minValue / range * BarWidth) truncated. newBarSize = barSize ifFalse: [barSize := newBarSize. (Time millisecondsSince: lastRefresh) > 25 ifTrue: [barVal := #refresh ]]]. barVal == #refresh ifTrue: [ ((bar valueOfProperty: #useStripes) ifNil: [false]) ifTrue: [bar fillStyle origin: bar position - ((Time millisecondClockValue // 50 \\ 30) @ 0)]. bar barSize: barSize. self currentWorld displayWorld. lastRefresh := Time millisecondClockValue]]. return] Cheers, Doru -- www.tudorgirba.com "Every thing has its own flow"