Qt 按钮菜单如何与按钮右边界对齐，并去掉下拉箭头（源码）

#include "menutest.h" MenuTest::MenuTest(QWidget *parent) : QWidget(parent) { resize(QSize(240,180)); menuButton = new QPushButton(this); menuButton->setFixedSize(80,24); createMenu(); menuButton->setMenu(menu); menuButton->setStyleSheet("QPushButton::menu-indicator{image:none}"); mainLayout = new QHBoxLayout(this); mainLayout->addWidget(menuButton); } MenuTest::~MenuTest() { } void MenuTest::createMenu() { menu = new QMenu("menu", this); menu->installEventFilter(this); QAction *action1 = new QAction("action#1", this); QAction *action2 = new QAction("action#2", this); menu->addAction(action1); menu->addAction(action2); } bool MenuTest::eventFilter(QObject * obj, QEvent *event) { if (event->type() == QEvent::Show && obj == menuButton->menu()) { int menuXPos = menuButton->menu()->pos().x(); int menuWidth = menuButton->menu()->size().width(); int buttonWidth = menuButton->size().width(); QPoint pos = QPoint(menuXPos - menuWidth + buttonWidth, menuButton->menu()->pos().y()); menuButton->menu()->move(pos); return true; } return false; }