title: MenuBar cannot be clicked
body: <p>I'm trying to learn PyQt5 and currently and making a MenuBar with an <code>Exit</code> function and an <code>Open</code> function. I currently have the MenuBar showing with shortcuts that work, but I cannot click on the MenuBar when I hover over it. Here is my current code:</p>
  
  <pre><code>import sys
  from PyQt5.QtWidgets import QMainWindow, QAction, qApp, QApplication, QPushButton, QDesktopWidget, QLabel, QFileDialog
  from PyQt5.QtGui import QIcon
  from PyQt5.QtCore import QCoreApplication
  from win32api import GetSystemMetrics
  
  CURRENT_VERSION = 0.1
  
  class Example(QMainWindow):
  
      def __init__(self):
          super().__init__()
  
          self.initUI()
  
      def initUI(self):
          self.setWindowTitle('test')
  
          window_width = GetSystemMetrics(0)
          window_height = GetSystemMetrics(1)
  
          self.resize(0.6 * window_width, 0.6 * window_height)
          self.center()
  
          self.setWindowIcon(QIcon('Icon.png'))
  
          #Exit on menubar
          exitAct = QAction('&amp;Exit', self)
          exitAct.setShortcut('Ctrl+Q')
          exitAct.setStatusTip('Exit applicatiion')
          exitAct.triggered.connect(qApp.quit)
  
          #Open on menubar
          openAct = QAction('&amp;Open', self)
          openAct.setShortcut('Ctrl+O')
          openAct.setStatusTip('Open Directory')
          openAct.triggered.connect(self.openFile)
  
          menubar = self.menuBar()
          fileMenu = menubar.addMenu('&amp;File')
          fileMenu.addAction(exitAct)
          fileMenu.addAction(openAct)
  
          btn = QPushButton("Test", self)
          btn.resize(btn.sizeHint())
          btn.move(50, 50)
  
          btn.clicked.connect(self.buttonpress)
  
          self.label = QLabel(self)
          self.image = QLabel(self)
          self.openDirectoryDialog = ""
  
          self.show()
  
      def center(self):
          qr = self.frameGeometry()
          cp = QDesktopWidget().availableGeometry().center()
          qr.moveCenter(cp)
          self.move(qr.topLeft())
  
      def openFile(self):
          self.openDirectoryDialog=ddir = QFileDialog.getExistingDirectory(self, "Get Dir Path")
  
      def buttonpress(self):
          label = QLabel(self)
          self.label.move(100,150)
          self.label.setFixedWidth(500)
          self.label.setFixedHeight(100)
          self.label.setText(self.openDirectoryDialog)
  
  
  if __name__ == '__main__':
  
      app = QApplication(sys.argv)
  
      w = Example()
  
      sys.exit(app.exec_())
  </code></pre>
  
  <p>It was working before I added the ability to open a file and only had the <code>exit</code> menu item, but I cannot get even that working again.</p>