我正在学习PyQt5,目前正在用Exit函数和Open函数制作一个MenuBar。我目前有MenuBar显示的快捷方式,但我不能点击MenuBar时,我悬停在它上面。以下是我的当前代码:
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('&Exit', self)
exitAct.setShortcut('Ctrl+Q')
exitAct.setStatusTip('Exit applicatiion')
exitAct.triggered.connect(qApp.quit)
#Open on menubar
openAct = QAction('&Open', self)
openAct.setShortcut('Ctrl+O')
openAct.setStatusTip('Open Directory')
openAct.triggered.connect(self.openFile)
menubar = self.menuBar()
fileMenu = menubar.addMenu('&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_())在我添加打开文件的能力并且只有exit菜单项之前,它是工作的,但是我甚至不能让它再次工作。
发布于 2017-11-20 14:50:02
造成此问题的原因是QLabels位于菜单上方,阻塞了该菜单的单击事件。QMainWindow有一个特殊的结构,如下图所示:

如果您想要添加一个小部件,您必须将其添加到Central widget,当您将一个父部件传递给一个小部件时,它将放置在相对于它的位置‘(0,0)。
进行修改后,您将得到以下内容:
class Example(QMainWindow):
[...]
def initUI(self):
[...]
#Exit on menubar
exitAct = QAction('&Exit', self)
exitAct.setShortcut('Ctrl+Q')
exitAct.setStatusTip('Exit applicatiion')
exitAct.triggered.connect(qApp.quit)
#Open on menubar
openAct = QAction('&Open', self)
openAct.setShortcut('Ctrl+O')
openAct.setStatusTip('Open Directory')
openAct.triggered.connect(self.openFile)
menubar = self.menuBar()
fileMenu = menubar.addMenu('&File')
fileMenu.addAction(exitAct)
fileMenu.addAction(openAct)
centralwidget = QWidget(self)
self.setCentralWidget(centralwidget)
btn = QPushButton("Test", centralwidget)
btn.resize(btn.sizeHint())
btn.move(50, 50)
btn.clicked.connect(self.buttonpress)
self.label = QLabel(centralwidget)
self.image = QLabel(centralwidget)
[...]https://stackoverflow.com/questions/47393609
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