How to center an item editor created by a custom item delegate?

[bar0n]

i tried to change updateEditorGeometry().

void MyDelegate::updateEditorGeometry( QWidget * editor, const QStyleOptionViewItem option, const QModelIndex & index ) const
{
  QRect rect = option.rect;
 
  if (index.column() == m_VisibilityColumnIndex) 
  {
    rect.setX(rect.x() + 10);
  }
 
  editor->setGeometry(rect);
}

void MyDelegate::updateEditorGeometry( QWidget * editor, const QStyleOptionViewItem option, const QModelIndex & index ) const
{
  QRect rect = option.rect;
  
  if (index.column() == m_VisibilityColumnIndex) 
  {
    rect.setX(rect.x() + 10);
  }

  editor->setGeometry(rect);
}

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but obviously the method never gets called (i set a breakpoint there). so what can i do?

[bar0n]

btw: in my code example i just tried to move the checkbox 10 pixels to the right (instead of centering it)-> just for demonstration

[aamer4yu]

Does ur createEditor function gets called ?
If not check if the item is set as editable or not. updateEditorGeometry must be called if the editor is created...

[maxwalter]

The only way i found is to set a QMyStyle to the QTableView

m_pMyTableView->setStyle(new QMyStyle());

In QMyStyle you should overload subElementRect(...) Method as follow :

QRect QMyStyle::subElementRect(SubElement sr, const QStyleOption *opt, const QWidget *widget) const
{

//die CheckBox mittig ausrichten
if (sr == QStyle::SE_ItemViewItemCheckIndicator || sr == QStyle::SE_CheckBoxIndicator)
{
QRect r = QWindowsVistaStyle::subElementRect(sr, opt, widget);
int center = opt->rect.center().x();
return QRect(QPoint(center - r.width() / 2, r.y()), QPoint(center + r.width() / 2, r.bottom()));
}

return QWindowsVistaStyle::subElementRect(sr, opt, widget);
}


regards,
Max