The problem is just that other later GUI frameworks didn't follow that design. Smalltalk had a controller for each view to handle user input, but Windows doesn'

The problem is just that other later GUI frameworks didn't follow that design. Smalltalk had a controller for each view to handle user input, but Windows doesn't and neither does GTK, Qt or Swing. As Martin Fowler says[1] in his a GUI architecture overview: "As Smalltalk developed in the 80's and 90's this led to some significant variations on the classic MVC model. Indeed one could almost say that MVC disappeared, if you consider the view/controller separation to be an essential part of MVC - which the name does imply." [1] https://martinfowler.com/eaaDev/uiArchs.html https://martinfowler.com/eaaDev/uiArchs.html