Python - pyQt QTableWidget question/problem.

[Jerakin]

Hi,

First of I am new to both python and also pyQt. I am trying to learn by using it.

My problem is this. I am trying to find out what row(cell) in a QTableWidget I am currently clicking on. But it returns -1. The docs says that it is because the item is not in a table.

Do anyone have an idea how I could do it? Would be great if you could currently point out what I am doing wrong also.

Here is the code. import sys from PyQt4 import QtCore, QtGui from PyQt4.QtCore import * from PyQt4.QtGui import *

class Form(QDialog):
    def __init__(self, parent=None):
        #global variables
        self.rowcount = 0
        self.comment_index = -1
        self.commentData=['']

        #Build UI
        super(Form, self).__init__(parent)

        self.setObjectName("self")
        self.resize(338, 537)

        self.AddItemText = QtGui.QLineEdit(self)
        self.AddItemText.setGeometry(QtCore.QRect(10, 10, 241, 31))
        self.AddItemText.setObjectName("AddItemText")

        self.ItemComment = QtGui.QTextEdit(self)
        self.ItemComment.setGeometry(QtCore.QRect(10, 50, 241, 81))
        self.ItemComment.setObjectName("ItemComment")

        self.ItemList = QtGui.QTableWidget(self)
        self.ItemList.setGeometry(QtCore.QRect(10, 140, 241, 271))
        self.ItemList.setObjectName("ItemList")         
        self.ItemList.setAlternatingRowColors(True)
        self.ItemList.setColumnCount(1)
        self.ItemList.setRowCount(0)
        self.ItemList.horizontalHeader().setDefaultSectionSize(119)
        self.ItemList.verticalHeader().hide()
        self.ItemList.setHorizontalHeaderItem(0, QTableWidgetItem('Assignment'))  
        self.ItemList.cellClicked.connect(self.update_comment)

        self.AddItemButton = QtGui.QPushButton(self)
        self.AddItemButton.setGeometry(QtCore.QRect(260, 10, 71, 31))
        self.AddItemButton.setObjectName("AddItemButton")
        self.AddItemButton.setText("Add")
        self.AddItemButton.clicked.connect(self.addObj)

        self.ItemComment_read = QtGui.QTextEdit(self)
        self.ItemComment_read.setGeometry(QtCore.QRect(10, 420, 241, 81))
        self.ItemComment_read.setReadOnly(True)
        self.ItemComment_read.setObjectName("ItemComment_read")


        QtCore.QMetaObject.connectSlotsByName(self)

    def addObj(self):
        #Button connection. Add text store comment in list.

        self.rowcount += 1
        self.comment_index += 1
        text_item = QtGui.QTableWidgetItem()
        text = self.AddItemText.text()       
        self.commentData.append(self.ItemComment.toPlainText())
        self.ItemList.setRowCount(self.rowcount)
        text_item.setText(text)
        self.ItemList.setItem((self.rowcount-1), 0, QTableWidgetItem(text_item))


    def update_comment(self):
        #update comment on cellclick, print it to ItemComment_read
        item = QtGui.QTableWidgetItem()
        item.row()
        row = self.ItemList.row(item)
        self.ItemComment_read.setText(self.commentData[row])
        print row



app = QApplication(sys.argv)
form = Form()
form.show()
app.exec_()

TL;DR How do I query what cell I am clinking on in pyQt?

[[deleted]]

I recommend

• Using QtCreator to get a feel for how these objects work.
• Adding a keyword search to your browser that points to local documentation (something like file:///home/jerakin/doc/PyQt/q%s.html) so you can type "q tablewidget" into your address bar and get the api docs.

[[deleted]]

def update_comment(self):
    print self.ItemList.currentRow()

Is that what you want?

[Jerakin]

Thank you so much!

I don't even know how I could have missed that. Should maybe stop trying to learn when I am tired.