python – Pyside PyQt,如何将Key_Delete连接到4个不同的QListWidget
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我的问题是我有4个QListWidget,我想能够用del键删除每个列表中的选定项目.
因此,当我只将del键连接到一个列表时,它可以正常工作,但只要我将它连接到第二个或更多,它就不再起作用了.到目前为止,我只在处理一个QListWidget时才找到示例和解释.
有谁知道我在这里做错了什么？
import sys, os
from PySide import QtGui, QtCore
# List item to drag and drop files from windows explorer
class List(QtGui.QListWidget):
def __init__(self, parent):
super(List, self).__init__(parent)
self.setAcceptDrops(True)
self.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
def dragEnterEvent(self, event):
if event.mimeData().hasUrls:
event.accept()
else:
event.ignore()
def dragMoveEvent(self, event):
if event.mimeData().hasUrls:
event.setDropAction(QtCore.Qt.CopyAction)
event.accept()
else:
event.ignore()
def dropEvent(self, event):
all_items = []
for i in xrange(self.count()):
all_items.append(self.item(i))
url = event.mimeData().urls()
if all_items == []:
for strUrl in url:
self.addItem(strUrl.path()[1:])
else:
for strUrl in url:
if any(item.text() in strUrl.path()[1:] for item in all_items):
continue
else:
self.addItem(strUrl.path()[1:])
def _del_item(self):
for item in self.selectedItems():
self.takeItem(self.row(item))
class MainWindow(QtGui.QWidget):
def __init__(self):
super(MainWindow, self).__init__()
self.init_ui()
def init_ui(self):
folder_list = [' ', 'Concept Art', 'Scripts', 'Storyboard', 'Directors Input', 'Look Dev', 'Corrections',
'References', 'Still References', 'Video References', 'Sound', 'Sound References']
self.box_one = QtGui.QComboBox(parent=self)
self.box_two = QtGui.QComboBox(parent=self)
self.box_three = QtGui.QComboBox(parent=self)
self.box_four = QtGui.QComboBox(parent=self)
for i in folder_list:
self.box_one.addItems([i])
self.box_two.addItems([i])
self.box_three.addItems([i])
self.box_four.addItems([i])
self.list_one = List(self)
self.list_one.setGeometry(0, 0, 500, 100)
self.list_two = List(self)
self.list_two.setGeometry(0, 0, 500, 100)
self.list_three = List(self)
self.list_three.setGeometry(0, 0, 500, 100)
self.list_four = List(self)
self.list_four.setGeometry(0, 0, 500, 100)
# connect del key to lists
del_one = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_Delete), self.list_one)
del_two = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_Delete), self.list_two)
del_three = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_Delete), self.list_three)
del_four = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_Delete), self.list_four)
self.connect(del_one, QtCore.SIGNAL('activated()'), self.list_one._del_item)
self.connect(del_two, QtCore.SIGNAL('activated()'), self.list_two._del_item)
self.connect(del_three, QtCore.SIGNAL('activated()'), self.list_three._del_item)
self.connect(del_four, QtCore.SIGNAL('activated()'), self.list_four._del_item)
v_box = QtGui.QVBoxLayout()
v_box.setSpacing(10)
v_box.addWidget(self.box_one)
v_box.addWidget(self.list_one)
v_box.addWidget(self.box_two)
v_box.addWidget(self.list_two)
v_box.addWidget(self.box_three)
v_box.addWidget(self.list_three)
v_box.addWidget(self.box_four)
v_box.addWidget(self.list_four)
self.setLayout(v_box)
self.setGeometry(100, 100, 500, 190)
self.setWindowTitle('Arx Submitter')
self.show()
def main():
app = QtGui.QApplication(sys.argv)
main_win = MainWindow()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
解决方法:
我将keyPressEvent添加到List类,在这个例子中,我检查了按下的键是否为del键,如果是,则调用_del_item方法.我还在mainWindow中添加了addItems方法,将一些项添加到listWidgets中.这很好用.我注释掉了del key的连接.
只需复制并粘贴此代码,运行它并尝试删除项目;)
import sys, os
from PySide import QtGui, QtCore
from PySide.QtCore import Qt
# List item to drag and drop files from windows explorer
class List(QtGui.QListWidget):
def __init__(self, parent):
super(List, self).__init__(parent)
self.setAcceptDrops(True)
self.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
def dragEnterEvent(self, event):
if event.mimeData().hasUrls:
event.accept()
else:
event.ignore()
def dragMoveEvent(self, event):
if event.mimeData().hasUrls:
event.setDropAction(QtCore.Qt.CopyAction)
event.accept()
else:
event.ignore()
def dropEvent(self, event):
all_items = []
for i in xrange(self.count()):
all_items.append(self.item(i))
url = event.mimeData().urls()
if all_items == []:
for strUrl in url:
self.addItem(strUrl.path()[1:])
else:
for strUrl in url:
if any(item.text() in strUrl.path()[1:] for item in all_items):
continue
else:
self.addItem(strUrl.path()[1:])
def keyPressEvent(self, event):
if event.key() == Qt.Key_Delete:
self._del_item()
def _del_item(self):
for item in self.selectedItems():
self.takeItem(self.row(item))
class MainWindow(QtGui.QWidget):
def __init__(self):
super(MainWindow, self).__init__()
self.init_ui()
def init_ui(self):
folder_list = [' ', 'Concept Art', 'Scripts', 'Storyboard', 'Directors Input', 'Look Dev', 'Corrections',
'References', 'Still References', 'Video References', 'Sound', 'Sound References']
self.box_one = QtGui.QComboBox(parent=self)
self.box_two = QtGui.QComboBox(parent=self)
self.box_three = QtGui.QComboBox(parent=self)
self.box_four = QtGui.QComboBox(parent=self)
for i in folder_list:
self.box_one.addItems([i])
self.box_two.addItems([i])
self.box_three.addItems([i])
self.box_four.addItems([i])
self.list_one = List(self)
self.addItems(self.list_one)
self.list_one.setGeometry(0, 0, 500, 100)
self.list_two = List(self)
self.addItems(self.list_two)
self.list_two.setGeometry(0, 0, 500, 100)
self.list_three = List(self)
self.addItems(self.list_three)
self.list_three.setGeometry(0, 0, 500, 100)
self.list_four = List(self)
self.addItems(self.list_four)
self.list_four.setGeometry(0, 0, 500, 100)
# connect del key to lists
#del_one = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_Delete), self.list_one)
#del_two = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_Delete), self.list_two)
#del_three = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_Delete), self.list_three)
#del_four = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_Delete), self.list_four)
#self.connect(del_one, QtCore.SIGNAL('activated()'), self.list_one._del_item)
#self.connect(del_two, QtCore.SIGNAL('activated()'), self.list_two._del_item)
#self.connect(del_three, QtCore.SIGNAL('activated()'), self.list_three._del_item)
#self.connect(del_four, QtCore.SIGNAL('activated()'), self.list_four._del_item)
v_box = QtGui.QVBoxLayout()
v_box.setSpacing(10)
v_box.addWidget(self.box_one)
v_box.addWidget(self.list_one)
v_box.addWidget(self.box_two)
v_box.addWidget(self.list_two)
v_box.addWidget(self.box_three)
v_box.addWidget(self.list_three)
v_box.addWidget(self.box_four)
v_box.addWidget(self.list_four)
self.setLayout(v_box)
self.setGeometry(100, 100, 500, 190)
self.setWindowTitle('Arx Submitter')
self.show()
def addItems(self, widget):
for i in range(10):
widget.addItem("Item "+ str(i))
def main():
app = QtGui.QApplication(sys.argv)
main_win = MainWindow()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
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