我在检索QWidgetlineEdit框中输入时遇到问题。得到C ++的相同但无法使用Python检索,
self.line = QtGui.QLineEdit()
i =0
while(i<self.tableWidget.rowCount()):
self.q = (QtGui.QLineEdit()).self.tableWidget.cellWidget(i, 1)
j = self.line.text()
print j
i +=1
在c ++中使用代码:
QLineEdit* tmpLineEdit;
QString tmpString;
for(int row=0; row < moneyTableWidget.rowCount(); row++)
{
tmpLineEdit = qobject_cast<QLineEdit *>(moneyTableWidget.cellWidget(row,1));
tmpString = tmpLineEdit->text();
}
首先,您使用C ++提供的代码是危险的,因为没有人保证返回的cellWidget是QLineEdit,因此验证可以改进代码:
QString tmpString;
for(int row=0; row < moneyTableWidget.rowCount(); row++)
{
if(QLineEdit * tmpLineEdit = qobject_cast<QLineEdit *>(moneyTableWidget.cellWidget(row,1)))
tmpString = tmpLineEdit->text();
}
在python的情况下,没有必要进行转换,但你必须验证返回cellWidget的小部件是使用isinstance()
的QLineEdit:
tmpString = ""
for row in range(self.tableWidget.rowCount()):
widget = self.tableWidget.cellWidget(row, 1)
if isinstance(widget, QtGui.QLineEdit):
tmpString = widget.text()