Interaction

How to Make a Draggable Roblox GUI

A draggable window, inventory or settings panel feels native. The trick is UserInputService: start dragging on press, move the Frame on InputChanged, and stop on release. The key detail is recording the offset between the cursor and the Frame at the start, so it doesn't snap to the corner.

1. Track press, move and release

Listen on the title bar (not the whole panel) so buttons inside still work. InputBegan starts the drag; UserInputService.InputChanged moves it; InputEnded stops it.

local UserInputService = game:GetService("UserInputService")
local dragging, dragStart, startPos

titleBar.InputBegan:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.MouseButton1
	or input.UserInputType == Enum.UserInputType.Touch then
		dragging = true
		dragStart = input.Position
		startPos = frame.Position
	end
end)

2. Move the Frame with the cursor

On InputChanged, add the cursor's travel since dragStart to the Frame's start position. Mixing Scale and Offset in UDim2.new keeps it working regardless of how the Frame was positioned.

UserInputService.InputChanged:Connect(function(input)
	if not dragging then return end
	if input.UserInputType == Enum.UserInputType.MouseMovement
	or input.UserInputType == Enum.UserInputType.Touch then
		local delta = input.Position - dragStart
		frame.Position = UDim2.new(
			startPos.X.Scale, startPos.X.Offset + delta.X,
			startPos.Y.Scale, startPos.Y.Offset + delta.Y
		)
	end
end)

UserInputService.InputEnded:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.MouseButton1
	or input.UserInputType == Enum.UserInputType.Touch then
		dragging = false
	end
end)

Tip: Drag by a title-bar Frame, not the whole panel — otherwise the drag swallows clicks on the buttons inside it.

FAQ

Why does the Frame jump to the cursor when I grab it?

You're setting Position to the cursor directly. Instead, record startPos = frame.Position at drag start and add the cursor's delta to it, so the Frame keeps its grab point.

Does this work on mobile?

Yes — handle Enum.UserInputType.Touch the same way as MouseButton1 in InputBegan and InputEnded, and Touch in InputChanged.