QTableWidget的double类型文本框委托，lineeditdelegate.zip

#include "lineeditdelegate.h" LineEditDelegate::LineEditDelegate(QObject *parent) : QItemDelegate(parent) { } QWidget *LineEditDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &/* option */, const QModelIndex &/* index */) const { QLineEdit *editor = new QLineEdit(parent); editor->setValidator(new QDoubleValidator(editor));; return editor; } void LineEditDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const { QString value = index.model()->data(index, Qt::EditRole).toString(); QLineEdit *widget = static_cast<QLineEdit*>(editor); widget->setText(value); } void LineEditDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const { QLineEdit *widget = static_cast<QLineEdit*>(editor); QString value = widget->text(); model->setData(index, value, Qt::EditRole); } void LineEditDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &/* index */) const { editor->setGeometry(option.rect); }