#13469·slint

'RepeatedItemTree::grid_layout_input_data()' not implemented

Author: cyknaCreated Sep 17, 2026Updated Sep 17, 2026

Labelsneed triaging

Bug Description

The bug occurs when I'm trying to use grid layouts by setting the col and row on a child. What happens is that an error, is shown on the terminal and the grid layout doesn't seem to apply properly:

Internal error in Slint: RepeatedItemTree::grid_layout_input_data() not implemented for verita::slint_generatedApp::InnerComponent__shadow_188
Internal error in Slint: RepeatedItemTree::grid_layout_input_data() not implemented for verita::slint_generatedApp::InnerComponent__shadow_188
Internal error in Slint: RepeatedItemTree::grid_layout_input_data() not implemented for verita::slint_generatedApp::InnerComponent__shadow_188
Internal error in Slint: RepeatedItemTree::grid_layout_input_data() not implemented for verita::slint_generatedApp::InnerComponent__shadow_188
Internal error in Slint: RepeatedItemTree::grid_layout_input_data() not implemented for verita::slint_generatedApp::InnerComponent__shadow_188

Reproducible Code (if applicable)

slint

export component InviteList inherits VeritaDialog{
    in property <[UIInvite]> invites;
    in property <int> grid-x: 1;
    in property <int> grid-y: 4;
    GridLayout {

        for invite[index] in invites: InviteItem {
            invite: invite;
            col: index.mod(grid-x);
            row: index / grid-y;
        }
    }
}

Environment Details

Slint Version: 1.17.1
Platform/OS:Linux, Niri, Wayland
Programming Language:Rust
Backend/Renderer:FemtoVG

Product Impact

Im building a discord-like application. It isn't critical since I can emulate this behavior with Vertical + Horizontal Layouts.

Source: slint-ui/slint

View original on GitHub View discussion on GitHub