user interface - JavaFX switching scenes with different sizes -

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i testing jewelsea's work small javafx framework , wondering how possible adapt change view between scene of different sizes ? because far know, every changed scene fits main vbox size.

edit : here things i've tried sizetoscene()

on main.java

@override     public void start(stage stage) throws exception{         stage.settitle("vista viewer");          stage.setscene(             createscene(                 loadmainpane()             )         );         stage.sizetoscene();         stage.show();     }

or on maincontroller.java

public void setvista(node node) {         stage stage = (stage) vistaholder.getscene().getwindow();         vistaholder.getchildren().setall(node);         stage.sizetoscene();     }

i understand how first example isn't right since it's happening once, second ?


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