QTableView with a checkbox

[maxpower]

Yes, everything works fine if I do not use setItemDelegate. I overrode createEditor, setEditor, setModelData, and updateModelGeometry. As I said before, my code works fine by itself, just not inside my db program.

Applying the delegate:

if(viewInit)
	{
		model->submitAll();
		delete model;
	}
	int rowCount = 0;
	model = new QSqlTableModel();
	model->setTable(tableName);
	model->setEditStrategy(QSqlTableModel::OnManualSubmit);
	model->select();
	model->removeColumn(8);
	rowCount = model->rowCount();
	ui.tableTV->setModel(model);
	checkboxDelegate delegate;
	ui.tableTV->setItemDelegate(&delegate);
	ui.tableTV->resizeColumnToContents(2);
	ui.tableTV->hideColumn(0);
	ui.tableTV->setEditTriggers(QAbstractItemView::CurrentChanged);
	ui.tableTV->setAlternatingRowColors(true);
	ui.tableTV->scrollToBottom();

if(viewInit)
	{
		model->submitAll();
		delete model;
	}
	int rowCount = 0;
	model = new QSqlTableModel();
	model->setTable(tableName);
	model->setEditStrategy(QSqlTableModel::OnManualSubmit);
	model->select();
	model->removeColumn(8);
	rowCount = model->rowCount();
	ui.tableTV->setModel(model);
	checkboxDelegate delegate;
	ui.tableTV->setItemDelegate(&delegate);
	ui.tableTV->resizeColumnToContents(2);
	ui.tableTV->hideColumn(0);
	ui.tableTV->setEditTriggers(QAbstractItemView::CurrentChanged);
	ui.tableTV->setAlternatingRowColors(true);
	ui.tableTV->scrollToBottom();

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The delegate:

checkboxDelegate::checkboxDelegate(QObject *parent)
    : QItemDelegate(parent)
{
}
 
QWidget *checkboxDelegate::createEditor(QWidget *parent,
    const QStyleOptionViewItem &option,
    const QModelIndex &index) const
{
	if(index.isValid() && index.column() == checkboxCol)
	{
		QCheckBox *editor = new QCheckBox(parent);
    	editor->installEventFilter(const_cast<checkboxDelegate*>(this));
    	return editor;
   	}
   	else
   	{
   		return QItemDelegate::createEditor(parent, option, index);
  		}
}
 
void checkboxDelegate::setEditorData(QWidget *editor,
                                    const QModelIndex &index) const
{
	if(index.isValid() && index.column() == checkboxCol)
	{
		QString value = index.model()->data(index, Qt::DisplayRole).toString();
 
    	QCheckBox *checkBox = static_cast<QCheckBox*>(editor);
    	if(value == "Y")
    		checkBox->setCheckState(Qt::Checked);
    	else
    		checkBox->setCheckState(Qt::Unchecked);
   		}
   		else
   		{
   			QItemDelegate::setEditorData(editor, index);
  			}
}
 
void checkboxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
                                   const QModelIndex &index) const
{
	if(index.isValid() && index.column() == checkboxCol)
	{
    	QCheckBox *checkBox = static_cast<QCheckBox*>(editor);
    	QString value;
   		if(checkBox->checkState() == Qt::Checked)
   			value = "Y";
   		else
   			value = "N";
 
    	model->setData(index, value);
   	}
   	else
   	{
   		QItemDelegate::setModelData(editor, model, index);
  		}
}
 
void checkboxDelegate::updateEditorGeometry(QWidget *editor,
    const QStyleOptionViewItem &option, const QModelIndex &index) const
{
	if(index.isValid() && index.column() == checkboxCol)
	    editor->setGeometry(option.rect);
	else
		QItemDelegate::updateEditorGeometry(editor, option, index);
 
}

checkboxDelegate::checkboxDelegate(QObject *parent)
    : QItemDelegate(parent)
{
}

QWidget *checkboxDelegate::createEditor(QWidget *parent,
    const QStyleOptionViewItem &option,
    const QModelIndex &index) const
{
	if(index.isValid() && index.column() == checkboxCol)
	{
		QCheckBox *editor = new QCheckBox(parent);
    	editor->installEventFilter(const_cast<checkboxDelegate*>(this));
    	return editor;
   	}
   	else
   	{
   		return QItemDelegate::createEditor(parent, option, index);
  		}
}

void checkboxDelegate::setEditorData(QWidget *editor,
                                    const QModelIndex &index) const
{
	if(index.isValid() && index.column() == checkboxCol)
	{
		QString value = index.model()->data(index, Qt::DisplayRole).toString();

    	QCheckBox *checkBox = static_cast<QCheckBox*>(editor);
    	if(value == "Y")
    		checkBox->setCheckState(Qt::Checked);
    	else
    		checkBox->setCheckState(Qt::Unchecked);
   		}
   		else
   		{
   			QItemDelegate::setEditorData(editor, index);
  			}
}

void checkboxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
                                   const QModelIndex &index) const
{
	if(index.isValid() && index.column() == checkboxCol)
	{
    	QCheckBox *checkBox = static_cast<QCheckBox*>(editor);
    	QString value;
   		if(checkBox->checkState() == Qt::Checked)
   			value = "Y";
   		else
   			value = "N";

    	model->setData(index, value);
   	}
   	else
   	{
   		QItemDelegate::setModelData(editor, model, index);
  		}
}

void checkboxDelegate::updateEditorGeometry(QWidget *editor,
    const QStyleOptionViewItem &option, const QModelIndex &index) const
{
	if(index.isValid() && index.column() == checkboxCol)
	    editor->setGeometry(option.rect);
	else
		QItemDelegate::updateEditorGeometry(editor, option, index);
	    	
}

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[jpn]

Allocate the delegate object on the heap so it won't get destroyed as soon as it gets out of scope:

checkboxDelegate* delegate = new checkboxDelegate(this);
ui.tableTV->setItemDelegate(delegate);

checkboxDelegate* delegate = new checkboxDelegate(this);
ui.tableTV->setItemDelegate(delegate);

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Edit: oops, forgot the important keyword new

[maxpower]

That did it, thanks alot!!!!

mAx