iswindowactive

Returns true when the Roblox window has OS focus, false otherwise.

iswindowactive(): boolean

The window is “active” when Roblox holds your operating system’s focus.

Input functions like mouse1click and keypress require this to return true to fire.

Returns

Type	Description
boolean	true if the Roblox window is in focus, false otherwise.

Example

Example 1

local active = iswindowactive()

Use this check to avoid sending keystrokes or mouse clicks when the game window is minimized.