Can InvisibleButton allow size 0? about imgui HOT 5 CLOSED

It's not possible what's what the assert is saying. I don't understand why you would want it?

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To clarify,

• your custom widget can add an extra if statement to avoid submitting empty one or handle this edge case.
• whereas if we remove this assert and claim to support it, users may accidentally have issues passing a zero value and never understanding where the widget is gone. Especially as for some API (0,0) may mean "fill available space" but not for this one.

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I am assuming you can add the extra if in your custom widget, let us know if you feel this is a problem.
Closing.

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Obviously, a custom widget can make an extra check before calling InvisibleButton(). I created the issue from the point of view that in general, size 0 is valid for ImGui widgets, cf. Dummy(), SmallButton(), and then there's one widget that crashes the whole program when given size 0.

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I thought about it again and would like to confirm my first impression.

Button({0,0}) uses label size aka automatic sizing, just as many other widgets treat {0,0} as automatic sizing. InvisibleButton() doesn't have a label. If you pass {0,0} following a computation and the widget is automatic sized it's likely a mistake but one that becomes easy to spot.

I don't think there's a neat parallel possible with other widgets, it's just that InvisibleButton() cannot support automatic sizing.

Dummy({0,0}) indeed works but generally it wouldn't be "harmful" if you submit this or miscompute.

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