Egui: Adding ui-elements to windows already created in other function | Bevy | Page 1

bright summit Jul 9, 2023, 9:47 AM

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If I have created an egui window

egui::Window::new("My Window")
    .show(egui_ctx, |ui| {
        ui.label("Hello, world!");
    });

How can I add more widgets to that window later from another function?

dusky jasper Jul 9, 2023, 10:55 AM

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Egui's immediate mode API means you kinda have to do all your widget rendering inside that function

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You can pass in a closure perhaps

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(one of the reasons I'm not a fan of immediate mode tbh)

bright summit Jul 9, 2023, 11:00 AM

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Hmm... Thanks! That's unfortunate.

dusky jasper Jul 9, 2023, 11:02 AM

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You could build your own retained mode layer

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Make a struct representing the state of the window, then have the rendering function process that to decide what to draw

#Egui: Adding ui-elements to windows already created in other function