QComboBox 的 PyQt 右键单击菜单
PyQt Right click Menu for QComboBox
我正在尝试使用右键单击菜单扩展 QComboClass,并为其提供一个选项以将当前索引设置为 -1(清除选择)。我在调用上下文菜单甚至右键单击事件时遇到问题。
class ComboBox(QComboBox):
def __init__(self, *args, **kwargs):
super(ComboBox, self).__init__()
self.setContextMenuPolicy(Qt.CustomContextMenu)
self.customContextMenuRequested.connect(self.showMenu)
def showMenu(self, pos):
menu = QMenu()
clear_action = menu.addAction("Clear Selection", self.clearSelection)
action = menu.exec_(self.mapToGlobal(pos))
def clearSelection(self):
self.setCurrentIndex(-1)
有人能告诉我我做错了什么吗?
你能试试这个吗,
def showMenu(self,event):
menu = QMenu()
clear_action = menu.addAction("Clear Selection", self)
action = menu.exec_(self.mapToGlobal(event.pos()))
if action == clear_action:
self.clearSelection()
你可以试试这个
import sys
from PyQt4 import QtGui
from PyQt4.QtCore import Qt
from PyQt4.QtGui import QMenu
class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
self.lbl = QtGui.QLabel("Ubuntu", self)
self.combo = QtGui.QComboBox(self)
self.combo.setContextMenuPolicy(Qt.CustomContextMenu)
self.combo.customContextMenuRequested.connect(self.showMenu)
self.combo.addItem("Ubuntu")
self.combo.addItem("Mandriva")
self.combo.addItem("Fedora")
self.combo.addItem("Red Hat")
self.combo.addItem("Gentoo")
self.combo.move(50, 50)
self.lbl.move(50, 150)
self.combo.activated[str].connect(self.onActivated)
self.setGeometry(300, 300, 300, 200)
self.setWindowTitle('QtGui.QComboBox')
self.show()
def showMenu(self,pos):
menu = QMenu()
clear_action = menu.addAction("Clear Selection")
action = menu.exec_(self.mapToGlobal(pos))
if action == clear_action:
self.combo.setCurrentIndex(0)
def onActivated(self, text):
self.lbl.setText(text)
self.lbl.adjustSize()
def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
我正在尝试使用右键单击菜单扩展 QComboClass,并为其提供一个选项以将当前索引设置为 -1(清除选择)。我在调用上下文菜单甚至右键单击事件时遇到问题。
class ComboBox(QComboBox):
def __init__(self, *args, **kwargs):
super(ComboBox, self).__init__()
self.setContextMenuPolicy(Qt.CustomContextMenu)
self.customContextMenuRequested.connect(self.showMenu)
def showMenu(self, pos):
menu = QMenu()
clear_action = menu.addAction("Clear Selection", self.clearSelection)
action = menu.exec_(self.mapToGlobal(pos))
def clearSelection(self):
self.setCurrentIndex(-1)
有人能告诉我我做错了什么吗?
你能试试这个吗,
def showMenu(self,event):
menu = QMenu()
clear_action = menu.addAction("Clear Selection", self)
action = menu.exec_(self.mapToGlobal(event.pos()))
if action == clear_action:
self.clearSelection()
你可以试试这个
import sys
from PyQt4 import QtGui
from PyQt4.QtCore import Qt
from PyQt4.QtGui import QMenu
class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
self.lbl = QtGui.QLabel("Ubuntu", self)
self.combo = QtGui.QComboBox(self)
self.combo.setContextMenuPolicy(Qt.CustomContextMenu)
self.combo.customContextMenuRequested.connect(self.showMenu)
self.combo.addItem("Ubuntu")
self.combo.addItem("Mandriva")
self.combo.addItem("Fedora")
self.combo.addItem("Red Hat")
self.combo.addItem("Gentoo")
self.combo.move(50, 50)
self.lbl.move(50, 150)
self.combo.activated[str].connect(self.onActivated)
self.setGeometry(300, 300, 300, 200)
self.setWindowTitle('QtGui.QComboBox')
self.show()
def showMenu(self,pos):
menu = QMenu()
clear_action = menu.addAction("Clear Selection")
action = menu.exec_(self.mapToGlobal(pos))
if action == clear_action:
self.combo.setCurrentIndex(0)
def onActivated(self, text):
self.lbl.setText(text)
self.lbl.adjustSize()
def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()