下面的PyQt4示例演示了我的问题。QTableWidget单元格中的文本很好地居中，直到您编辑这些单元格。编辑单元格时，文本左对齐。在

我想在编辑每个单元格时保持中心对齐。在import sys

from PyQt4 import QtGui

from PyQt4 import QtCore

from PyQt4 import Qt

from PyQt4.QtCore import *

from PyQt4.QtGui import *

class MainWindow(QtGui.QWidget):

def __init__(self, parent=None):

super(MainWindow, self).__init__(parent)

self.table = QtGui.QTableWidget(parent=self)

self.table.setEditTriggers(QtGui.QAbstractItemView.AllEditTriggers)

self.table.setColumnCount(2)

self.table.setRowCount(2)

self.table.setHorizontalHeaderLabels(['col1','col2'])

self.table.setVerticalHeaderLabels(['row1','row2'])

item = QtGui.QTableWidgetItem('x')

item.setFlags(Qt.NoItemFlags | Qt.ItemIsEditable | Qt.ItemIsEnabled | Qt.ItemIsSelectable)

item.setTextAlignment(Qt.AlignHCenter|Qt.AlignVCenter|Qt.AlignCenter)

self.table.setItem(0, 0, item)

item = QtGui.QTableWidgetItem('x')

item.setFlags(Qt.NoItemFlags | Qt.ItemIsEditable | Qt.ItemIsEnabled | Qt.ItemIsSelectable)

item.setTextAlignment(Qt.AlignHCenter|Qt.AlignVCenter|Qt.AlignCenter)

self.table.setItem(0, 1, item)

item = QtGui.QTableWidgetItem('x')

item.setFlags(Qt.NoItemFlags | Qt.ItemIsEditable | Qt.ItemIsEnabled | Qt.ItemIsSelectable)

item.setTextAlignment(Qt.AlignHCenter|Qt.AlignVCenter|Qt.AlignCenter)

self.table.setItem(1, 0, item)

item = QtGui.QTableWidgetItem('x')

item.setFlags(Qt.NoItemFlags | Qt.ItemIsEditable | Qt.ItemIsEnabled | Qt.ItemIsSelectable)

item.setTextAlignment(Qt.AlignHCenter|Qt.AlignVCenter|Qt.AlignCenter)

self.table.setItem(1, 1, item)

layout = QtGui.QGridLayout()

layout.addWidget(self.table, 1, 0)

self.setLayout(layout)

################################################################

if __name__ == "__main__":

app = QtGui.QApplication(sys.argv)

app.setStyle("Plastique") # set style

myapp = MainWindow() # instantiate the main window

myapp.show() # show the main window

rc = app.exec_()

myapp.close()

sys.exit(rc) # exit with the same return code of Qt application