我在使用QMenuBar
时得到了这个奇怪的结果,我之前在QMenuBar
中使用了这个确切的代码,并且效果很好。但显示的数量不超过1 QMenu
这是我的代码:
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import sys
from functools import partial
class MainMenu(QWidget):
def __init__(self, parent = None):
super(MainMenu, self).__init__(parent)
# background = QWidget(self)
lay = QVBoxLayout(self)
lay.setContentsMargins(5, 35, 5, 5)
self.menu()
self.setWindowTitle('Control Panel')
self.setWindowIcon(self.style().standardIcon(getattr(QStyle, 'SP_DialogNoButton')))
self.grid = QGridLayout()
lay.addLayout(self.grid)
self.setLayout(lay)
self.setMinimumSize(400, 320)
def menu(self):
menubar = QMenuBar(self)
viewMenu = menubar.addMenu('View')
viewStatAct = QAction('Dark mode', self, checkable=True)
viewStatAct.setStatusTip('enable/disable Dark mode')
viewMenu.addAction(viewStatAct)
settingsMenu = menubar.addMenu('Configuration')
email = QAction('Set Email', self)
settingsMenu.addAction(email)
if __name__ == '__main__':
app = QApplication(sys.argv)
main = MainMenu()
main.show()
sys.exit(app.exec_())
结果:
[我知道应该使用QWidget
时正在使用QMainWindow
,但是有解决方法吗?
(我为图像的糟糕质量预先致歉,没有很好的方法来拍摄QMenuBar
的照片]
问题是,对于QWidget,您没有使用QMainWindow的“ private”布局,该布局会自动调整特定子控件的大小(包括菜单栏,状态栏,停靠控件,工具栏,以及,“ centralWidget
”)。
为了解决此问题,您必须相应地手动调整子窗口小部件的大小。就您而言,只要您对菜单栏有引用,就只需要调整其大小即可:
def menu(self):
self.menubar = QMenuBar(self)
# any other function has to be run against the *self.menubar* object
viewMenu = self.menubar.addMenu('View')
# etcetera...
def resizeEvent(self, event):
# calling the base class resizeEvent function is not usually required,
# but it is for certain widgets (especially item views or scroll areas),
# so just call it anyway, just to be sure, as it's a good habit to do that
uper(MainMenu, self).resizeEvent(event)
# now that we have a direct reference to the menubar widget, we are also
# able to resize it, allowing all actions to be shown (as long as they
# are within the provided size
self.menubar.resize(self.width(), self.menubar.height())
注意:您也可以通过self.findChild(QtWidgets.QMenuBar)
或使用objectName
来“查找”菜单栏,但是使用instance属性通常是一个更简单,更好的解决方案。