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isFullScreen

Description​

Returns whether the desktop app window is currently in full-screen mode.

At startup the app reads the initial state from the window manager and caches it, then refreshes the value every time an onWindowEnterFullScreen or onWindowLeaveFullScreen event fires.

Parameters​

None

Returns​

TypeDescription
booltrue if the window is currently in full-screen mode, otherwise false

Notes​

  • This feature works on macOS and Windows desktop only. On mobile it always returns false.
  • Full-screen state changes also arrive as a __fullscreenChanged message event.
  • Control full-screen switching with $app.toggleMaximize().

Example​

// Check whether the window is currently full-screen
if ($app.isFullScreen()) {
    console.log("전체화면 모드입니다.");
} else {
    console.log("일반 창 모드입니다.");
}

// Receive full-screen state change events
$vm.onMessage = function(name, data) {
    if (name === "__fullscreenChanged") {
        console.log("전체화면:", data.isFullScreen);
    }
};
  • $app.toggleMaximize() — Switch between full-screen and a normal window
  • $app.isUnfolded() — Check whether a foldable device is unfolded