python-2.7 - 如何使用pyqt4在列表视图中获取选择项
问题描述
这是我的示例代码。当我单击列表视图中的索引项时,我得到了选择项,它工作正常。但我想使用向上和向下箭头获取选定项。谁能帮帮我吗。先感谢您。
下面是我的代码:
import sys
from PyQt4 import QtCore,QtGui
class mtable(QtGui.QMainWindow):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
self.auto_search1 = QtGui.QWidget()
self.auto_search_vbox1 = QtGui.QVBoxLayout(self.auto_search1)
self.auto_search_vbox1.setAlignment(QtCore.Qt.AlignLeft)
hbox1=QtGui.QHBoxLayout()
self.le_search1 = QtGui.QLineEdit()
self.se_btn1 = QtGui.QPushButton("Search")
self.searchBtn = QtGui.QPushButton("Close")
self.searchBtn.clicked.connect(self.auto_search1.close)
self.se_btn1.clicked.connect(self.filterClicked1)
hbox1.addWidget(self.le_search1)
hbox1.addWidget(self.se_btn1)
hbox1.addWidget(self.searchBtn)
self.auto_search_vbox1.addLayout(hbox1)
self.total_list1 =[]
self.list1 = QtGui.QListView()
self.list1.clicked.connect(self.on_treeView_clicked)
self.model1 = QtGui.QStandardItemModel(self.list1)
self.y =['one','two', 'three']
for i in self.y:
self.total_list1.append(i)
for code in self.total_list1:
item1 = QtGui.QStandardItem(code)
self.model1.appendRow(item1)
self.list1.setModel(self.model1)
self.auto_search_vbox1.addWidget(self.list1)
self.auto_search1.show()
self.auto_search1.resize(1000,500)
@QtCore.pyqtSlot(QtCore.QModelIndex)
def on_treeView_clicked(self, index):
itms = self.list1.selectedIndexes()
for data in itms:
print index.data().toString()
self.le_search1.setText(index.data().toString())
self.filterClicked1()
def filterClicked1(self):
print "searching logic"
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
tb = mtable()
sys.exit(app.exec_())
在这里我需要使用箭头键选择绿色突出显示的项目而不单击该项目
解决方案
您必须使用QListView的currentChanged
信号:selectionModel()
import sys
from PyQt4 import QtCore,QtGui
class MainWindow(QtGui.QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.lineedit = QtGui.QLineEdit()
self.search_button = QtGui.QPushButton("Search")
self.close_button = QtGui.QPushButton("Close")
self.listview = QtGui.QListView()
model = QtGui.QStandardItemModel(self.listview)
for e in ('one', 'two', 'three'):
model.appendRow(QtGui.QStandardItem(e))
self.listview.setModel(model)
# signals connections
self.listview.selectionModel().currentChanged.connect(self.on_currentChanged)
QtCore.QTimer.singleShot(0, self.selectFirstItem)
# layout
central_widget = QtGui.QWidget()
self.setCentralWidget(central_widget)
vlay = QtGui.QVBoxLayout(central_widget)
hlay = QtGui.QHBoxLayout()
hlay.addWidget(self.lineedit)
hlay.addWidget(self.search_button)
hlay.addWidget(self.close_button)
vlay.addLayout(hlay)
vlay.addWidget(self.listview)
self.resize(640, 480)
def selectFirstItem(self):
self.listview.setFocus()
ix = self.listview.model().index(0, 0)
self.listview.selectionModel().setCurrentIndex(ix, QtGui.QItemSelectionModel.Select)
@QtCore.pyqtSlot(QtCore.QModelIndex)
def on_currentChanged(self, current):
self.lineedit.setText(current.data())
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
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