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我不知道我的菜單似乎有什麼問題,但是當我點擊它時,它不會顯示菜單項,例如「新建,打開,保存等「。我試過看其他例子,但我沒有看到我可能錯過的任何東西。JavaFX菜單不會掉下來
private MenuItem _fileNew = new MenuItem("New");
private MenuItem _fileOpen = new MenuItem("Open");
private MenuItem _fileSave = new MenuItem("Save");
private MenuItem _fileSaveAs = new MenuItem("Save as...");
private MenuItem _fileExit = new MenuItem("Exit");
private MenuItem _helpAbout = new MenuItem("About " + TITLE + "...");
@Override
public void start(Stage primaryStage) throws Exception
{
Group root = new Group();
MenuBar menuBar = new MenuBar();
Menu menuFile = new Menu("FILE");
_fileNew.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent actionEvent)
{
System.out.println("New Clicked");
}
});
_fileOpen.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent actionEvent)
{
System.out.println("Open Clicked");
}
});
_fileSave.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent actionEvent)
{
System.out.println("Save Clicked");
}
});
_fileSaveAs.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent actionEvent)
{
System.out.println("Save As Clicked");
}
});
_fileExit.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent actionEvent)
{
System.out.println("Exit Clicked");
}
});
menuFile.getItems().addAll(_fileNew, _fileOpen, _fileSave, _fileSaveAs, _fileExit);
// HELP MENU
Menu menuHelp = new Menu("HELP");
menuHelp.getItems().addAll(_helpAbout);
menuBar.getMenus().addAll(menuFile, menuHelp);
menuBar.prefWidthProperty().bind(primaryStage.widthProperty());
primaryStage.setTitle(TITLE + VERSION);
primaryStage.setX(_bounds.getMinX());
primaryStage.setY(_bounds.getMinY());
primaryStage.setWidth(_bounds.getWidth());
primaryStage.setHeight(_bounds.getHeight());
root.getChildren().add(menuBar);
root.getChildren().add(_canvas);
primaryStage.setScene(new Scene(root));
primaryStage.show();
}
你的_canvas是什麼?由於您將其添加到組中,而不是任何類型的佈局窗格,因此它可能會位於菜單頂部並消耗鼠標事件。 –
@James_D這正是問題所在。註釋允許菜單顯示的畫布。 – SpicyWeenie