How to detect the row and column number of cellwidget user clicked on QTableWidget in PyQt4?

Question

My objective is to set multiple QPushButton as cellwidget in a QTableWidget and whenever the user click on any of those buttons, it will print out the Row and Column number of table it is in.

So, for 1 QPushButton,

import sys
from PyQt4 import QtGui,QtCore

def CurrentPos():
    clickme = QtGui.qApp.focusWidget()
    index = table.indexAt(clickme.pos())
    if index.isValid():
        print (index.row(), index.column())
        
def AddValues():
    table.setRowCount(5)
    for i in range(5):
        button = QtGui.QPushButton('Click1')
        table.setCellWidget(i,1,button)
        button.clicked.connect(CurrentPos)

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)

    table = QtGui.QTableWidget()
    table.setFixedSize(QtCore.QSize(330,250))

    table.setEditTriggers(QtGui.QTableWidget.NoEditTriggers)
    table.setSelectionBehavior(QtGui.QTableWidget.SelectRows)
    table.setSelectionMode(QtGui.QTableWidget.NoSelection)
    table.horizontalHeader().setStretchLastSection(True)
    table.setFocusPolicy(QtCore.Qt.NoFocus)

    table.setColumnCount(3)
    table.setHorizontalHeaderLabels(['A','B','C'])
    table.setColumnWidth(0,50)
    table.setColumnWidth(1,200)
    table.show()

    AddValues()
    
    app.exec_()

When i click on each button, It will print out the rows and columns number just fine. But When I changed the function AddValues to accomodate multiple buttons:

def AddValues():
    table.setRowCount(5)
    for i in range(5):
        button1 = QtGui.QPushButton('Click1')
        button2 = QtGui.QPushButton('Click2')
        button3 = QtGui.QPushButton('Click3')
        
        button_layout = QtGui.QHBoxLayout()       
        button_layout.addWidget(button1)
        button_layout.addWidget(button2)
        button_layout.addWidget(button3)
        
        buttons_widget = QtGui.QWidget()
        buttons_widget.setLayout(button_layout)
        
        table.setCellWidget(i,1,buttons_widget)
        button1.clicked.connect(CurrentPos)
        button2.clicked.connect(CurrentPos)
        button3.clicked.connect(CurrentPos)

It no longer print out the correct row and column number anymore. Instead, It will just print either (0,0) or (0,1) depending on the position of the button.

I tried to print out the QtGui.qApp.focusWidget() and it gives me <PyQt4.QtGui.QPushButton object at 0x014B56F0> so as far as I understand, the focus widget is the actual QPushButton I am clicking instead of the QWidget named buttons_widget.

My only suspect is that .pos() method return the position relative to it's parent widget, which is QWidget (buttons_widget) rather than the QTableWidget itself. But I can't seems to find the documentation for .pos() method.

So, How can I modify my code so that whenever user click on any of 3 Pushbuttons, it print out the row and column number the button currently in.

I am using windows xp SP3 and Python 2.7.3

Answer 1

I found the solution.

index = table.indexAt(clickme.parent().pos())

I should be checking the position of the parent QWidget rather than the QPushButton