QComboBox 单击在主 QDialog 上触发一个 leaveEvent

Question

我正在尝试构建悬停对话框，但我卡在 QComboBox selection 和 QDialog 的 leaveEvent 之间的交互中。看起来当我尝试单击组合框到 select 某物时，它会触发一个 leaveEvent，然后隐藏我的 QDialog。为什么会这样？我怎样才能确保仅当我将鼠标移出对话框时才隐藏对话框？

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import sys

class hoverDialog(QDialog):

    def __init__(self, parent=None):
        super().__init__()
        self.setAttribute(Qt.WA_DeleteOnClose)
        self.setWindowFlags(Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint)
        self.v = QVBoxLayout()
        self.combobox = QComboBox()
        self.combobox.addItems(['Work-around','Permanent'])
        self.textedit = QPlainTextEdit()
        self.v.addWidget(self.combobox)
        self.v.addWidget(self.textedit)
        self.setLayout(self.v)
        #self.setMouseTracking(True)

    def leaveEvent(self, event):
        self.hide()
        return super().leaveEvent(event)

class Table(QWidget):

    def __init__(self, parent=None):
        super().__init__()

        self.label4 = QLabel()
        self.label4.setText("hover popup")
        self.label4.installEventFilter(self)
        self.checkbox1 = QCheckBox()

        self.pushButton3 = QPushButton()
        self.pushButton3.setText('Generate')
        self.pushButton3.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Preferred)
        self.pushButton3.clicked.connect(self.buttonPressed)

        self.hbox5 = QHBoxLayout()
        self.hbox5.addWidget(self.checkbox1)
        self.hbox5.addWidget(self.label4)
        self.hbox5.addWidget(self.pushButton3)

        self.vbox1 = QVBoxLayout()
        self.vbox1.addLayout(self.hbox5)

        self.setLayout(self.vbox1)

        self.autoResolve = hoverDialog(self)

    def eventFilter(self, obj, event):
        if obj == self.label4 and event.type() == QtCore.QEvent.Enter and self.autoResolve.isHidden():
            self.onHovered()
        return super().eventFilter(obj, event)

    def onHovered(self):
        pos = QtGui.QCursor.pos()
        self.autoResolve.move(pos)
        self.autoResolve.show()

    def buttonPressed(self):
        if self.checkbox.isChecked():
            print('do something..')

if __name__ == '__main__':
    app = QApplication(sys.argv)
    form = Table()
    form.show()
    app.exec_()

Answer 1

查看源代码，我认为问题的根源在于每当显示新的弹出窗口小部件时 Qt 的行为。

我不能保证 100%，但无论如何，最简单的解决方案是仅在未显示组合弹出窗口时隐藏小部件：

def leaveEvent(self, event):
    if not self.combobox.view().isVisible():
        self.hide()

请注意，您的方法并不完美：由于对话框可以使用当前鼠标位置之外的几何图形显示，因此在鼠标实际进入之前它无法隐藏自己。您可能还应该过滤 FocusOut 和 WindowDeactivate 事件。

QComboBox 单击在主 QDialog 上触发一个 leaveEvent

QComboBox click triggers a leaveEvent on the main QDialog

python

pyqt5

qcombobox

qdialog

eventfilter