I think the tradeoff with the Toolbox is that positioning controls with relative coordinates, and updating views when scrolling etc, is a huge PITA since you ha

I think the tradeoff with the Toolbox is that positioning controls with relative coordinates, and updating views when scrolling etc, is a huge PITA since you have to do it in application code – for example, I'm not aware of many classic Toolbox applications that had bottom window status bars before that required relative positioning. A few early applications just assumed 512x342 fullscreen (i.e. MacPaint.) On the point of GrafPort still existing – Carbon was insanely backwards source compatible until QuickDraw was deprecated in the transition to 64-bit! [1] Conservatively-written 80s Toolbox code would work with some switching around of headers, and shimming getting/setting members of structs with functions. [1] https://www.highcaffeinecontent.com/blog/20150124-MPW,-Carbon-and-building-Classic-Mac-OS-apps-in-OS-X https://www.highcaffeinecontent.com/blog/20150124-MPW,-Carbo...