Why doesn't [Export(PropertyHint.Flags)] show flag checkboxes?

For C# enum-typed flags, use [Export] on a [Flags] enum directly. For int fields, supply a hint string with comma-separated flag names like 'Walk,Run,Jump'.

Show me the int variant?

[Export(PropertyHint.Flags, "Walk,Run,Jump")] public int States; gives a 3-bit flag UI. Bit values are 1, 2, 4.

PropertyHint.Layers2DPhysics, Layers3DRender, etc. Godot draws the layer matrix the same as built-in collision_layer fields.

Fix: Godot C# Export Flags Bitfield Not Shown

Quick answer: Use a [Flags] enum and plain [Export], or for int fields supply PropertyHint.Flags with a comma-separated hint string.

You expect a flags UI in inspector. You get a number field. Hint not recognized for int without hint string.

The Symptom

Inspector shows a single integer for what should be a multi-checkbox UI.

The Fix

// Enum-based flags
[Flags]
public enum Abilities { None = 0, Walk = 1, Run = 2, Jump = 4 }

[Export]
public Abilities AllowedActions { get; set; }

// Int with hint string
[Export(PropertyHint.Flags, "Walk,Run,Jump")]
public int States { get; set; }

// Physics layers (built-in hint)
[Export(PropertyHint.Layers2DPhysics)]
public uint CollisionMask { get; set; }

The enum form auto-detects flags via the [Flags] attribute. The int form needs the names spelled out so the editor knows what to label each bit.

Verifying

Inspector shows 3 checkboxes (Walk, Run, Jump). Tick combinations; integer value reflects the OR’d bits.

“Flags enum or int + hint string. Inspector draws checkboxes.”

Related Issues

For C# List property edits, see List property. For Resource UID, see UID.

Flags enum or hint string. UI shows.