Step by Step solution about How to resolve the algorithm Window management step by step in the Julia programming language

This code demonstrates window controls in the graphical user interface library Gtk. The runwindow function creates a window, adds a label to it, and starts a separate thread to handle window control operations in the controlwindow function. The controlwindow function waits for a few seconds, then hides the window, shows it again, resizes it, maximizes it, and finally closes it. A call to exit(0) terminates the program.

Here's a breakdown of the code:

1. controlwindow(win, lab): This function is executed in a separate thread and controls the window's visibility, size, and other properties.
   • It sleeps for 4 seconds, then updates the label to "Hiding..." and hides the window after 1 second.
   • After 5 seconds, it shows the window and updates the label to "Showing..."
   • After 5 seconds, it resizes the window to 300x300 and updates the label to "Resizing..."
   • After 4 seconds, it maximizes the window and updates the label to "Maximizing..."
2. runwindow(): This function creates a GtkWindow, adds a GtkLabel to it, and starts the controlwindow function in a separate thread using @async.
   • It creates a condition variable cond and a function endit that notifies the condition when the window is destroyed.
   • It connects the endit function to the destroy signal of the window.
   • It shows the window and waits for the cond variable to be notified, indicating that the window has been closed.
   • It then calls exit(0) to terminate the program.

using Gtk

function controlwindow(win, lab)
    sleep(4)
    set_gtk_property!(lab, :label, "Hiding...")
    sleep(1)
    println("Hiding widow")
    set_gtk_property!(win, :visible, false)
    sleep(5)
    set_gtk_property!(lab, :label, "Showing...")
    println("Showing window")
    set_gtk_property!(win, :visible, true)
    sleep(5)
    set_gtk_property!(lab, :label, "Resizing...")
    println("Resizing window")
    resize!(win, 300, 300)
    sleep(4)
    set_gtk_property!(lab, :label, "Maximizing...")
    println("Maximizing window")
    sleep(1)
    maximize(win)
    set_gtk_property!(lab, :label, "Closing...")
    sleep(5)
    println("Closing window")
    destroy(win)
    sleep(2)
    exit(0)
end

function runwindow()
    win = GtkWindow("Window Control Test", 500, 30) |> (GtkFrame() |> (vbox = GtkBox(:v)))
    lab = GtkLabel("Window under external control")
    push!(vbox, lab)
    @async(controlwindow(win, lab))

    cond = Condition()
    endit(w) = notify(cond)
    signal_connect(endit, win, :destroy)
    showall(win)
    wait(cond)
end

runwindow()