How to let a button expand both horizontally and vertically

[HiFiPhile]

Hi,

I'm trying to port an assembly line tool to Python, the UI is very simple, just a log text box, a large launch button and a status label.

However with flex=1 I'm unable to make the button grow in both directions, I had to set a fixed size and made the window non resizable.

    def startup(self):
        self.main_window = toga.Window(resizable=True)
        box = toga.Box()
        log_box = toga.Box()
        cmd_box = toga.Box()

        self.txt_log = toga.Table(
            accessors={"log"},
            data=[],
            style=Pack(
                height=400,
                flex=1,
                margin=5,
            )
        )
        log_box.add(self.txt_log)

        btn_go = toga.Button(
            "GO",
            on_press=self.button_handler,
            style=Pack(
                margin=5,
                text_align=CENTER,
                font_size=50,
                font_weight='bold',
                flex=1,
            )
        )
        cmd_box.add(btn_go)

        lbl_status = toga.Label(
            "",
            style=Pack(
                text_align=CENTER,
                font_size=30,
                flex=1,
            )
        )
        cmd_box.add(lbl_status)

        cmd_box.style.direction = ROW
        cmd_box.style.align_items = CENTER
        cmd_box.style.justify_content = CENTER
        cmd_box.style.flex = 1

        box.add(log_box)
        box.add(cmd_box)
        box.style.direction = COLUMN
        self.main_window.content = box
        self.main_window.show()

[freakboy3742]

The short answer is that you don't - buttons are only designed to be flexible in the horizontal axis.

However, you can explicitly set the height of the button with a height = ... style directive.