DelegateProperty

Represents a single-cast delegate property in Unreal Engine.

Inheritance

Property

Description

DelegateProperty wraps Unreal Engine's FDelegateProperty, which represents a single-cast delegate that can bind one object and function pair. Delegate properties are accessed via their property wrapper (using GetPropertyByName) for metadata operations, while delegate values are accessed directly via Object.PropertyName and return simple tables.

Reading Delegate Values

Delegate values are accessed directly on UObjects and return a table with Object and FunctionName fields:

local PlayerPawn = GetPlayerController().Pawn

-- Read single-cast delegate value
local delegate = PlayerPawn.OnSomeDelegate
if delegate then
    print("Bound to:", delegate.Object:GetFullName())
    print("Function:", tostring(delegate.FunctionName))
end

Setting Delegate Values

Single-cast delegates can be set by assigning a table with Object and FunctionName fields, or nil to clear:

-- Bind a delegate
PlayerPawn.OnSomeDelegate = {
    Object = SomeObject,
    FunctionName = FName("MyCallbackFunction")
}

-- Clear a delegate
PlayerPawn.OnSomeDelegate = nil

Notes

• Single-cast delegates do not have Add, Remove, or Clear methods (use multicast delegates for those operations)
• The property wrapper itself provides no additional methods beyond those inherited from Property
• Delegate values are plain Lua tables, not userdata objects