imgui_drag_drop_sample.lua

local imgui = load_imgui({version="1.0.0", name="test"})

local valuea = 0

function OnWorldPreUpdate()
    if imgui.Begin("Main Window Title") then
        imgui.Button("Drag start element")
        if imgui.BeginDragDropSource() then
            imgui.SetDragDropPayload("TEST", valuea)
            imgui.Text("Testing")
            imgui.EndDragDropSource()
        end

        imgui.SameLine()
        _, valuea = imgui.SliderFloat("Value", valuea, 0, 1000)
    end

    if imgui.Begin("Destination") then
        imgui.Button("Drag destination")
        if imgui.BeginDragDropTarget() then
            local payload = imgui.AcceptDragDropPayload("TEST")
            if payload ~= nil then
                print("Received " .. tostring(payload) .. " " .. type(payload))
            end
            imgui.EndDragDropTarget()
        end
    end
end