QT委托demo

class SpinBoxDeegate1 :public QStyledItemDelegate
{
Q_OBJECT
public:
SpinBoxDeegate1(QObject* parent = 0);
QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const;

void setEditorData(QWidget *editor, const QModelIndex &index) const;
void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const;
};

SpinBoxDeegate1::SpinBoxDeegate1(QObject* parent /*= 0*/)
{
}

QWidget* SpinBoxDeegate1::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QSpinBox *editor = new QSpinBox(parent);
editor->setFrame(false);
editor->setMinimum(0);
editor->setMaximum(100);
return editor;
}

void SpinBoxDeegate1::setEditorData(QWidget *editor, const QModelIndex &index) const
{
int value = index.model()->data(index, Qt::EditRole).toInt();
QSpinBox *spinBox = static_cast < QSpinBox* > (editor);
spinBox->setValue(value);
}

void SpinBoxDeegate1::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
QSpinBox *spinBox = static_cast < QSpinBox* > (editor);
spinBox->interpretText();
int value = spinBox->value();
model->setData(index, value, Qt::EditRole);
}

void SpinBoxDeegate1::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
editor->setGeometry(option.rect);
}

 

main.cpp:

QTableView table;
QStandardItemModel model(4, 2);
SpinBoxDeegate1 delegate;

table.setModel(&model);
table.setItemDelegate(&delegate);

table.horizontalHeader()->setStretchLastSection(true);
for (int row = 0; row < 4; ++row) {
for (int column = 0; column < 2; ++column) {
QModelIndex index = model.index(row, column, QModelIndex());
model.setData(index, QVariant((row + 1) * (column + 1)));
}
}
table.show();