HI, I have the following strange behaviour: I created a QListView whose elements are delegates. The delegate contains a button implemented this way:

Qt Code: 
  1. void ItemDelegate::paint ( QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const
  2. {
  3.     ...
  5.     button.rect = buttonRect;
  6.     button.features |= QStyleOptionButton::Flat;
  7.     button.state = _state | QStyle::State_Enabled;
  8.     QApplication::style()->drawControl(QStyle::CE_PushButton, &button, painter);
  9.     ...
  10. }
  11.  
  12. bool ItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
  13. {
  14.     if( event->type() == QEvent::MouseButtonPress ||
  15.         event->type() == QEvent::MouseButtonRelease ) {
  16.     } else {
  17.          _state = QStyle::State_Raised;
  18.         return true;
  19.     }
  20.  
  21.     ...
  22.     QMouseEvent* mouseEvent = static_cast<QMouseEvent*>(event);
  23.     if( !buttonRect.contains( mouseEvent->pos()) ) {
  24.         _state = QStyle::State_Raised;
  25.         return true;
  26.     }
  27.  
  28.     if( event->type() == QEvent::MouseButtonPress) {
  29.         _state = QStyle::State_Sunken;
  30.     } else if( event->type() == QEvent::MouseButtonRelease) {
  31.         _state = QStyle::State_Raised;
  32.         // call slot
  33.     }
  34. }
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It works fine except that the first time (after starting the application) I click any button, all buttons show the State_Sunken; all others clicks, after the first one, are normals: only the clicked button show the sunken/raised effect.

Do you have any explaination for this?

Very thanks.