Hi all,
I would like to have the following feature when using
QTreeWidget via signal and slot mechanism. As an item(item_0) is
entered, then a slot will be connected(that simply sets a value on
(item_1)). To achieve that, I did the following:
self.treeWidget.itemEntered(item_0, 0).connect(self.trigger_result)
and the UI complete code is as below:
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow")) MainWindow.resize(480, 471)
self.centralWidget = QtGui.QWidget(MainWindow)
self.centralWidget.setObjectName(_fromUtf8("centralWidget")) self.treeWidget =
QtGui.QTreeWidget(self.centralWidget)
self.treeWidget.setGeometry(QtCore.QRect(20, 20, 431, 321))
self.treeWidget.setObjectName(_fromUtf8("treeWidget")) item_0 =
QtGui.QTreeWidgetItem(self.treeWidget) item_1 = QtGui.QTreeWidgetItem(item_0)
item_1.setFlags(QtCore.Qt.ItemIsSelectable|QtCore.Qt.ItemIsEditable|QtCore.Qt.ItemIsDragEnabled|QtCore.Qt.ItemIsUserCheckable|QtCore.Qt.ItemIsEnabled)
item_1 = QtGui.QTreeWidgetItem(item_0) #redundant
item_1.setFlags(QtCore.Qt.ItemIsSelectable|QtCore.Qt.ItemIsEditable|QtCore.Qt.ItemIsDragEnabled|QtCore.Qt.ItemIsUserCheckable|QtCore.Qt.ItemIsEnabled)
#redundant item_0 = QtGui.QTreeWidgetItem(self.treeWidget) #redundant item_0 =
QtGui.QTreeWidgetItem(self.treeWidget) #redundant
MainWindow.setCentralWidget(self.centralWidget) self.menuBar =
QtGui.QMenuBar(MainWindow) self.menuBar.setGeometry(QtCore.QRect(0, 0, 480,
23)) self.menuBar.setObjectName(_fromUtf8("menuBar"))
MainWindow.setMenuBar(self.menuBar) self.mainToolBar =
QtGui.QToolBar(MainWindow)
self.mainToolBar.setObjectName(_fromUtf8("mainToolBar"))
MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
self.statusBar = QtGui.QStatusBar(MainWindow)
self.statusBar.setObjectName(_fromUtf8("statusBar"))
MainWindow.setStatusBar(self.statusBar) self.retranslateUi(MainWindow)
self.treeWidget.itemEntered(item_0, 0).connect(self.trigger_result)
QtCore.QMetaObject.connectSlotsByName(MainWindow) def trigger_result(self):
self.treeWidget.topLevelItem(0).child(1).setText(1, '99') def
retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow",
"MainWindow", None, QtGui.QApplication.UnicodeUTF8))
self.treeWidget.headerItem().setText(0,
QtGui.QApplication.translate("MainWindow", "Property", None,
QtGui.QApplication.UnicodeUTF8)) self.treeWidget.headerItem().setText(1,
QtGui.QApplication.translate("MainWindow", "Value", None,
QtGui.QApplication.UnicodeUTF8)) __sortingEnabled =
self.treeWidget.isSortingEnabled() self.treeWidget.setSortingEnabled(False)
self.treeWidget.topLevelItem(0).setText(0,
QtGui.QApplication.translate("MainWindow", "Main", None,
QtGui.QApplication.UnicodeUTF8))
self.treeWidget.topLevelItem(0).child(0).setText(0,
QtGui.QApplication.translate("MainWindow", "Mass flow", None,
QtGui.QApplication.UnicodeUTF8))
self.treeWidget.topLevelItem(0).child(1).setText(0,
QtGui.QApplication.translate("MainWindow", "Efficiency", None,
QtGui.QApplication.UnicodeUTF8)) self.treeWidget.topLevelItem(1).setText(0,
QtGui.QApplication.translate("MainWindow", "Inlet/Inner part", None,
QtGui.QApplication.UnicodeUTF8))
self.treeWidget.topLevelItem(2).setText(0,
QtGui.QApplication.translate("MainWindow", "Outlet/Outer part", None,
QtGui.QApplication.UnicodeUTF8))
self.treeWidget.setSortingEnabled(__sortingEnabled)
However, I receive the following error:
line 283, in setupUi
self.treeWidget.itemEntered(item_0, 0).connect(self.trigger_result)
I understand that if I do:
self.treeWidget.itemEntered.connect(self.trigger_result)
it will work, but the problem is, any cell or item entered, it will definitely
call the slot, which is not what I want.
Also, I've tried:
self.treeWidget.itemEntered(self.treeWidget.topLevelItem(0).child(0),
1).connect(self.trigger_result)
it doesn't work either.
Attached is the code in Python. Please shed some light on this.
Thanks in advance.
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'mainwindow.ui'
#
# Created: Thu Jan 30 14:14:43 2014
# by: PyQt4 UI code generator 4.9.1
#
# WARNING! All changes made in this file will be lost!
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
_fromUtf8 = lambda s: s
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(480, 471)
self.centralWidget = QtGui.QWidget(MainWindow)
self.centralWidget.setObjectName(_fromUtf8("centralWidget"))
self.treeWidget = QtGui.QTreeWidget(self.centralWidget)
self.treeWidget.setGeometry(QtCore.QRect(20, 20, 431, 321))
self.treeWidget.setUniformRowHeights(False)
self.treeWidget.setAnimated(False)
self.treeWidget.setWordWrap(False)
self.treeWidget.setHeaderHidden(False)
self.treeWidget.setObjectName(_fromUtf8("treeWidget"))
item_0 = QtGui.QTreeWidgetItem(self.treeWidget)
item_1 = QtGui.QTreeWidgetItem(item_0)
item_1.setFlags(QtCore.Qt.ItemIsSelectable|QtCore.Qt.ItemIsEditable|QtCore.Qt.ItemIsDragEnabled|QtCore.Qt.ItemIsUserCheckable|QtCore.Qt.ItemIsEnabled)
item_1 = QtGui.QTreeWidgetItem(item_0)
item_1.setFlags(QtCore.Qt.ItemIsSelectable|QtCore.Qt.ItemIsEditable|QtCore.Qt.ItemIsDragEnabled|QtCore.Qt.ItemIsUserCheckable|QtCore.Qt.ItemIsEnabled)
item_0 = QtGui.QTreeWidgetItem(self.treeWidget)
item_0 = QtGui.QTreeWidgetItem(self.treeWidget)
self.treeWidget.header().setCascadingSectionResizes(False)
self.treeWidget.header().setHighlightSections(False)
MainWindow.setCentralWidget(self.centralWidget)
self.menuBar = QtGui.QMenuBar(MainWindow)
self.menuBar.setGeometry(QtCore.QRect(0, 0, 480, 23))
self.menuBar.setObjectName(_fromUtf8("menuBar"))
MainWindow.setMenuBar(self.menuBar)
self.mainToolBar = QtGui.QToolBar(MainWindow)
self.mainToolBar.setObjectName(_fromUtf8("mainToolBar"))
MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
self.statusBar = QtGui.QStatusBar(MainWindow)
self.statusBar.setObjectName(_fromUtf8("statusBar"))
MainWindow.setStatusBar(self.statusBar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
self.treeWidget.headerItem().setText(0, QtGui.QApplication.translate("MainWindow", "Property", None, QtGui.QApplication.UnicodeUTF8))
self.treeWidget.headerItem().setText(1, QtGui.QApplication.translate("MainWindow", "Value", None, QtGui.QApplication.UnicodeUTF8))
__sortingEnabled = self.treeWidget.isSortingEnabled()
self.treeWidget.setSortingEnabled(False)
self.treeWidget.topLevelItem(0).setText(0, QtGui.QApplication.translate("MainWindow", "Main", None, QtGui.QApplication.UnicodeUTF8))
self.treeWidget.topLevelItem(0).child(0).setText(0, QtGui.QApplication.translate("MainWindow", "Mass flow", None, QtGui.QApplication.UnicodeUTF8))
self.treeWidget.topLevelItem(0).child(0).setText(1, QtGui.QApplication.translate("MainWindow", "199", None, QtGui.QApplication.UnicodeUTF8))
self.treeWidget.topLevelItem(0).child(1).setText(0, QtGui.QApplication.translate("MainWindow", "Efficiency", None, QtGui.QApplication.UnicodeUTF8))
self.treeWidget.topLevelItem(1).setText(0, QtGui.QApplication.translate("MainWindow", "Inlet/Inner part", None, QtGui.QApplication.UnicodeUTF8))
self.treeWidget.topLevelItem(2).setText(0, QtGui.QApplication.translate("MainWindow", "Outlet/Outer part", None, QtGui.QApplication.UnicodeUTF8))
self.treeWidget.setSortingEnabled(__sortingEnabled)
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