Simple example: multiple windows?

[tmssngr]

Please excuse my ignorance, I only know Java GUI frameworks.

This is the simple example from the project's home page:

package main

import (
    "log"

    _ "github.com/gogpu/gg/gpu"
    "github.com/gogpu/gogpu"
    "github.com/gogpu/ui/app"
    "github.com/gogpu/ui/desktop"
    "github.com/gogpu/ui/primitives"
    "github.com/gogpu/ui/widget"
)

func main() {
    gogpuApp := gogpu.NewApp(gogpu.DefaultConfig().
        WithTitle("My App").
        WithSize(800, 600))

    uiApp := app.New(
        app.WithWindowProvider(gogpuApp),
        app.WithPlatformProvider(gogpuApp),
        app.WithEventSource(gogpuApp.EventSource()),
    )

    uiApp.SetRoot(
        primitives.Box(
            primitives.Text("Hello gogpu/ui!").
                FontSize(24).Bold().
                Color(widget.RGBA8(33, 33, 33, 255)),
            primitives.Text("Enterprise-grade GUI for Go").
                FontSize(16).
                Color(widget.RGBA8(100, 100, 100, 255)),
        ).Padding(24).Gap(12).Background(widget.RGBA8(255, 255, 255, 255)),
    )

    if err := desktop.Run(gogpuApp, uiApp); err != nil {
        log.Fatal(err)
    }
}

Do I understand it correctly, that gogpu.NewApp() creates the connection to the OS' windowing system (Display for SWT) and app.New(..) creates a new window (Shell for SWT), while desktop.Run(..) is the event loop of the application? Do I also understand it correctly, that I can easily create more (top-level) windows using app.New(..)? How to create child-windows ("dialogs")?

How is it possible to attach mouse, key or paint listeners to windows?

[SladkyCitron]

+1, I really need support for multiple windows and dialogs as well.