<p>“我忘了提的是,表中每一行的小部件都是在按下按钮时创建的”,在这种情况下,您需要动态地创建它们,并且您需要能够识别它们(至少是第一个)。在</p>
<p>我已经重新实现了<code>QComboBox</code>类-<code>MyComboBox</code>,因此当其中任何一个被更改时,它将发出包含标识符(行号)和所选内容(“name”或“age”)的信号<code>firstColumnComboBoxChanged</code>。该信号将激活<code>changeSecondCombo</code>类中的<code>changeSecondCombo</code>方法,其中第二列中的comboBox被更改。在</p>
<p>点击“在第一行添加代码”按钮。在</p>
<pre><code>import sys
from PyQt4 import QtGui, QtCore
class myComboBox(QtGui.QComboBox):
def __init__(self, comboID, mainForm):
super(myComboBox, self).__init__()
self.__comboID = comboID
self.__mainForm = mainForm
self.connect(self, QtCore.SIGNAL("currentIndexChanged (const QString&)"), self.indexChanged)
def indexChanged(self, ind):
# send signal to MainForm class, self.__comboID is actually row number, ind is what is selected
self.__mainForm.emit(QtCore.SIGNAL("firstColumnComboBoxChanged(PyQt_PyObject,PyQt_PyObject)"), self.__comboID, ind)
class mainWin(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
self.di = {"name":["raton", "kamal", "sujon"], "age":["45","21","78"]}
lay = QtGui.QGridLayout(self)
#create tableWidget and pushButton
self.tableWidget = QtGui.QTableWidget()
self.tableWidget.setColumnCount(2)
self.pushButton = QtGui.QPushButton()
self.pushButton.setText("Add row")
lay.addWidget(self.tableWidget, 0, 0)
lay.addWidget(self.pushButton, 1, 0)
self.connect(self.pushButton, QtCore.SIGNAL("clicked()"), self.addRow)
# Custom signal
self.connect(self, QtCore.SIGNAL("firstColumnComboBoxChanged(PyQt_PyObject, PyQt_PyObject)"), self.changeSecondCombo)
def addRow(self):
rowNumber = self.tableWidget.rowCount()
self.tableWidget.insertRow(rowNumber)
combo1=myComboBox(rowNumber, self)
combo2=QtGui.QComboBox()
combo1.addItems(["name", "age"])
combo2.addItems(self.di["name"])
self.tableWidget.setCellWidget(rowNumber, 0, combo1)
self.tableWidget.setCellWidget(rowNumber, 1, combo2)
def changeSecondCombo(self, row, ind):
combo2 = self.tableWidget.cellWidget(row, 1)
if combo2:
combo2.clear()
combo2.addItems(self.di["%s"%(ind)])
def main():
app = QtGui.QApplication(sys.argv)
form = mainWin()
form.show()
app.exec_()
if __name__ == '__main__':
main()
</code></pre>