// 生成二维码图片String qrCodeText = "https://example.com";DialogPane grid = new DialogPane();grid.setPadding(new Insets(5));VBox vBox = new VBox();vBox.setAlignment(Pos.CENTER);Image qrCodeImage = generateQRCodeImage(qrCodeText);ImageView customImage = new ImageView(qrCodeImage);Label label = new Label("12121");vBox.getChildren().addAll(customImage, label);grid.setContent(vBox);Dialog<String> dlg = new Dialog<>();Window window = dlg.getDialogPane().getScene().getWindow();window.setOnCloseRequest(event1 -> window.hide());dlg.setDialogPane(grid);dlg.show();

java - javafx.scene.control.Dialog<R> won't close on pressing "x" - Stack Overflow