isBackPressed API Reference in Compose UI

true when the back button (mouse back button) is pressed or false when it isn't pressed or there is no mouse button assigned to "back."

Source set: Common

expect val PointerButtons.isBackPressed: Boolean

true when the back button (mouse back button) is pressed or false when it isn't pressed or there is no mouse button assigned to "back."

Source set: Android

actual val PointerButtons.isBackPressed: Boolean