Is it cause performance issue to use multiple Window.SetContent in go with fyne api

I am developing an application but i need use multiple Window.SetContent method of fyne api but i am worry about is it will decrease performance of my application. Is the oldest Window.SetContent still running in background ? Or is it stopped working after i call second Window.SetContent method.Here is test code, in my real application i need use more Window.SetContent method than test code. I still did not find a solution making my app usable without using second Window.SetContent method as in the test code.

package main

import (

func main() {
    a := app.New()
    w := a.NewWindow("testing")
    w.Resize(fyne.NewSize(400, 400))
    testButton1 := widget.NewButton("test1", func(){})
    testButton2 := widget.NewButton("go to test1 button", func(){


  • Setting the window content must check it fits and other things that may be slow. Using a container and replacing its content is likely more efficient.

    This is also easier to make reusable components as widgets should not require they are using the whole window.