如何在左键单击上显示QMenu

alphanumeric 发表于 Dev

字母数字

该QMenu节目上了一个QLineEdit右键单击。问题：如何修改此代码以在单击鼠标左键时也显示菜单？

在此处输入图片说明

from PyQt4.QtCore import *
from PyQt4.QtGui import *
import sys

class MyWindow(QWidget):
    def __init__(self, *args):
        QWidget.__init__(self, *args)

    def actionFunct(self, argBool):
        print 'actionFunct()', argBool

    def buildGUI(self):
        self.line=QLineEdit(self)
        self.line.setText('My Line Edit')      

        self.menu=QMenu(self.line)

        self.line.installEventFilter(self)
        self.menu.installEventFilter(self)

        for i in range(3):
            actn=QAction('Action 0%s'%i, self.menu, checkable=True)
            actn.triggered.connect(self.actionFunct)
            self.menu.addAction(actn)

        self.line.setContextMenuPolicy(Qt.CustomContextMenu)
        self.line.connect(self.line, SIGNAL("customContextMenuRequested(QPoint)" ), self.lineClicked)

        layout=QVBoxLayout(self)
        layout.addWidget(self.line)
        self.setLayout(layout)

    def lineClicked(self, QPos):
        print 'lineClicked', QPos
        parentPosition = self.line.mapToGlobal(QPoint(0, 0))        
        menuPosition = parentPosition + QPos

        self.menu.move(menuPosition)
        self.menu.show() 

if __name__ == "__main__":
    app = QApplication(sys.argv)
    w = MyWindow()
    w.buildGUI()
    w.show()
    sys.exit(app.exec_())

布伦丹·亚伯

您需要在Window类上定义一个eventFilter方法来过滤/处理事件。

def eventFilter(self, obj, event):
    if obj == self.line and isinstance(event, QMouseEvent) and event.buttons() & Qt.LeftButton:
        self.lineClicked(event.pos())
        return True
    return False

本文收集自互联网，转载请注明来源。

如有侵权，请联系[email protected] 删除。