I have tried bellow code with no success. ClipboardManager.hasText() always returns false, either doing cmd+c outside the App or calling ClipboardManager.setText directly in the App.

@Composable
fun ClipBoardButton(
    onPaste: (String) -> Unit
) {
    val clipboardManager = LocalClipboardManager.current
    Column(modifier = Modifier.fillMaxSize()) {
        Button(onClick = {
            // clipboardManager.setText(AnnotatedString(("Local test")))
            println("Clipboard hasText: ${clipboardManager.hasText()}")
            clipboardManager.getText()?.text?.let {
                println("Clipboard received: $it")
                onPaste(it)
            }
        }) {
            Text("Paste")
        }
    }
}

Solved: The solution is using the

window.navigator.clipboard

val clipboardManager = window.navigator.clipboard

Not sure why

LocalClipboardManager.current

don’t map to

window.navigator.clipboard

, anyway calling it directly works.