[Question] Scrolling inside UserControl

[arkham64]

Question

Is there a way in flet current version to scroll inside a UserControl object ?
If I put GridView exemple from flet Docs in UserControl, everything work well... except scrolling.
And when I add a "on_scroll" event nothing's trigerred.

Code sample

import flet as ft

class MyGrid(ft.UserControl):

    def build(self):
        self.grid = ft.GridView(
            expand=True,
            max_extent=150,
            child_aspect_ratio=1,
            auto_scroll=False,
        )

        for i in range(5000):
            self.grid.controls.append(
                ft.Container(
                    ft.Text(f"Item {i}"),
                    alignment=ft.alignment.center,
                    bgcolor=ft.colors.AMBER_100,
                    border=ft.border.all(1, ft.colors.AMBER_400),
                    border_radius=ft.border_radius.all(5),
                )
            )
        return self.grid

def main(page: ft.Page):
    page.add(MyGrid())

ft.app(target=main)

Error message

No response

------------------------------------------------------

• I have searched for answers to my question both in the issues and in previous discussions.

[emojiiii]

def MyGrid():
    grid = ft.GridView(
        expand=True,
        max_extent=150,
        child_aspect_ratio=1,
        auto_scroll=False,
    )

    for i in range(5000):
        grid.controls.append(
            ft.Container(
                ft.Text(f"Item {i}"),
                alignment=ft.alignment.center,
                bgcolor=ft.colors.AMBER_100,
                border=ft.border.all(1, ft.colors.AMBER_400),
                border_radius=ft.border_radius.all(5),
            )
        )
    return grid

I have made some modifications to your code, you can try it out

[arkham64]

Thank you for your response, it works. I intended to turn MyGrid into a class, but it may not be possible in the current version of Flet. I will wait for a while and mark it as answered if no other ideas are forthcoming

[ndonkoHenri]

You need to expand the Usercontrol too. Add the method below to the class:

    def __init__(self):
        super().__init__(expand=True)

[arkham64]

Thank you, it works !