Here the dual value editor that is instantiated in delegate.createEditor method with

Qt Code: 
  1. QWidget * QStyledItemDelegate::createEditor ( QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index )
  2. {
  3.     return new EvaDualValEditor(new QDateTimeEdit(parent), new QDateTimeEdit(parent), parent);
  4. }
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... and it looks like in table edit mode. After tabbing (cursor on blue marked) the editor is closed and the next cell is selected.
dualValEditor.jpg


Qt Code: 
  1. // header
  2. class EvaDualValEditor : public QWidget
  3. {
  4.  Q_OBJECT
  5.  
  6. public:
  7.  explicit EvaDualValEditor(QWidget* editor1, QWidget* editor2, QWidget *parent = 0);
  8.  ~EvaDualValEditor();
  9.  
  10.  void setValues( QVariant& param1, QVariant& param2 );
  11.  
  12. protected:
  13.  
  14. private:
  15.  QHBoxLayout *horizontalLayout_2;
  16.  QLabel *label;
  17.  QWidget *wgt1;
  18.  QLabel *label_2;
  19.  QWidget *wgt2;
  20.  
  21.  void init();
  22. };
  23.  
  24. // implementation
  25.  
  26. EvaDualValEditor::EvaDualValEditor(QWidget* editor1, QWidget* editor2, QWidget* parent /*= 0*/) 
  27.  : QWidget(parent)
  28.  , wgt1(editor1)
  29.  , wgt2(editor2)
  30. {
  31.  init();
  32. }
  33.  
  34. EvaDualValEditor::~EvaDualValEditor()
  35. {
  36. }
  37.  
  38. void EvaDualValEditor::init()
  39. {
  40.  
  41.  setFocusPolicy (Qt::StrongFocus);
  42.  setFocusProxy(wgt1);
  43.  setTabOrder(wgt1, wgt2);setObjectName(QString::fromUtf8("EvaDualValEditor"));
  44.  
  45.  horizontalLayout_2 = new QHBoxLayout(this);
  46.  horizontalLayout_2->setObjectName(QString::fromUtf8("horizontalLayout_2"));
  47.  horizontalLayout_2->setSpacing(1);
  48.  horizontalLayout_2->setContentsMargins(1, 1, 1, 1);
  49.  
  50.  label = new QLabel(this);
  51.  label->setObjectName(QString::fromUtf8("label"));
  52.  
  53.  horizontalLayout_2->addWidget(label);
  54.  
  55.  wgt1->setObjectName(QString::fromUtf8("widget"));
  56.  
  57.  horizontalLayout_2->addWidget(wgt1);
  58.  
  59.  label_2 = new QLabel(this);
  60.  label_2->setObjectName(QString::fromUtf8("label_2"));
  61.  
  62.  horizontalLayout_2->addWidget(label_2);
  63.  
  64.  wgt2->setObjectName(QString::fromUtf8("widget_2"));
  65.  
  66.  horizontalLayout_2->addWidget(wgt2);
  67.  
  68. }
  69.  
  70. void EvaDualValEditor::setValues( QVariant& param1, QVariant& param2 )
  71. {
  72.  if (wgt1 && !param1.isNull())
  73.  {
  74.   qobject_cast<QDateTimeEdit*>(wgt1)->setDateTime(param1.toDateTime());
  75.  }
  76.  if (wgt2 && !param2.isNull())
  77.  {
  78.   qobject_cast<QDateTimeEdit*>(wgt2)->setDateTime(param2.toDateTime());
  79.  }
  80. }
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