我在PyQt5中使用QTreeWidget制作GUI。我希望特定列是仅整数列。用户不应该在其中输入任何非整数项。我看到了一些使用QVariant的方法,但似乎并没有满足我的要求。
这是我found!但在我看来,这似乎是从后端设置数据而不是从用户端设置数据。
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(478, 320)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)
self.verticalLayout.setObjectName("verticalLayout")
self.treeWidget = QtWidgets.QTreeWidget(self.centralwidget)
self.treeWidget.setAlternatingRowColors(True)
self.treeWidget.setObjectName("treeWidget")
item_0 = QtWidgets.QTreeWidgetItem(self.treeWidget)
item_1 = QtWidgets.QTreeWidgetItem(item_0)
item_1.setFlags(QtCore.Qt.ItemIsSelectable|QtCore.Qt.ItemIsEditable|QtCore.Qt.ItemIsDragEnabled|QtCore.Qt.ItemIsUserCheckable|QtCore.Qt.ItemIsEnabled)
self.verticalLayout.addWidget(self.treeWidget)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 478, 20))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.treeWidget.headerItem().setText(0, _translate("MainWindow", "Some other data"))
self.treeWidget.headerItem().setText(1, _translate("MainWindow", "Only Integers"))
__sortingEnabled = self.treeWidget.isSortingEnabled()
self.treeWidget.setSortingEnabled(False)
self.treeWidget.topLevelItem(0).setText(0, _translate("MainWindow", "Text"))
self.treeWidget.topLevelItem(0).child(0).setText(0, _translate("MainWindow", "Sub Text"))
self.treeWidget.setSortingEnabled(__sortingEnabled)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
这是代码和图像。请让我知道我应该在代码中做出哪些更改以实现我的目标。提前致谢。
您必须在第二列中建立一个委托,该委托具有QSpinBox
编辑器:
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
# ...
class IntegerDelegate(QtWidgets.QStyledItemDelegate):
def createEditor(self, parent, option, index):
editor = QtWidgets.QSpinBox(parent)
editor.setFrame(False)
editor.setMinimum(-2147483648)
editor.setMaximum(2147483647)
editor.setSizePolicy(
QtWidgets.QSizePolicy.Ignored, editor.sizePolicy().verticalPolicy()
)
return editor
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
delegate = IntegerDelegate(self.treeWidget)
self.treeWidget.setItemDelegateForColumn(1, delegate)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
更新:
class DoubleDelegate(QtWidgets.QStyledItemDelegate):
def createEditor(self, parent, option, index):
editor = QtWidgets.QDoubleSpinBox(parent)
editor.setFrame(False)
editor.setMinimum(-1.7976931348623157e+308)
editor.setMaximum(1.7976931348623157e+308)
editor.setSizePolicy(
QtWidgets.QSizePolicy.Ignored, editor.sizePolicy().verticalPolicy()
)
return editor