点击QComboBox会在主QDialog上触发一个leaveEvent。

问题描述 投票:0回答:1

我正试图建立一个悬浮对话框,但我被卡在了QComboBox选择和QDialog's leaveEvent之间的相互作用上,看起来当我试图点击combobox选择某些东西时,它会触发一个leaveEvent,然后隐藏我的QDialog。为什么会发生这种情况?我怎样才能确保只有当我把鼠标移到对话框外时,对话框才会被隐藏?

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_()

python pyqt5 qcombobox qdialog eventfilter
1个回答
0
投票

从源头上看,我相信问题的源头是在Qt的行为中,每当一个新的弹出式widget被显示出来的时候。

我不能100%保证这一点,但无论如何,最简单的解决方案是只有在组合弹出窗口不显示时才隐藏该小组件。

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

请注意,你的方法其实并不完美:因为对话框可能会在当前鼠标位置之外的几何体中显示,所以在鼠标真正进入对话框之前,它将无法隐藏自己。你可能还应该过滤FocusOut和WindowDeactivate事件。

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