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.

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Returns

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

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Example

Example 1

local active = iswindowactive()

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