from guizero import App, Text, TextBox, PushButton, Slider
def say_my_name():
    welcome_message.value = my_name.value

def change_text_size(slider_value):
    welcome_message.size = slider_value

#app = App()
#app.bg = "blue"
#app.text_color = "yellow"

app = App(title = "Hello GUI World", width=600, height=600)

welcome_message = Text(app, text ="Welcome to my App", size = 20, font = "Arial", color="blue")
my_name = TextBox(app, text = "Enter your name",width = 30)
update_text = PushButton(app, command = say_my_name, text="Display your name")
text_size = Slider(app, command=change_text_size, start=10,end=40)

app.display()