How to check if a player is in a TextBox?

How do you check if a player is typing in a TextBox? I have certain keys bind to open menus in my game and this is an issue for when I need the player typing in a TextBox.

EDIT; This is what I currently have, but it doesn't work...

userInput = game:GetService("UserInputService")

focused = false
userInput.TextBoxFoxused:connect(function()--fires when the player focuses on a textBox
    focused = true
	print("We live!")
end)

userInput.TextBoxFoxusedReleased:connect(function()--fires when the player unfocuses from a textBox
    focused = false
	print("We off")
end)
userInput.InputBegan:connect(function(input)
	print("Hi!")
	if input.UserInputType == Enum.UserInputType.Keyboard and input.UserInputState == Enum.UserInputState.Begin and input.KeyCode == Enum.KeyCode.M and focused == false then

		onClicked()
	
	end
end)
script.Parent.MouseButton1Click:connect(onClicked)