我正在尝试学习PyQt5并且当前正在使用Exit
函数和Open
函数创建一个MenuBar。我目前有MenuBar显示有效的快捷方式,但是当我将鼠标悬停在菜单栏上时,我无法点击它。这是我目前的代码:
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_())
在我添加了打开文件的能力之前它才有效,但只有exit
菜单项,但是我再也无法工作了。
答案 0 :(得分:1)
问题是由于QLabel位于菜单上方,阻止了此次点击事件。 QMainWindow具有特定结构,如下图所示:
如果要添加小部件,则必须对中央小部件执行此操作,当您将父级传递给小部件时,它将放置在相对于它的位置“(0,0)。
进行修改后,您将获得以下内容:
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)
[...]