I want to display a button on my table ....

how i must set paint ?... to display direct QWidget ... not only on click.....

if (index.column() == 0) {
int xnummer = index.model()->data(index, Qt:isplayRole).toInt();
this->createEditor(tas, option, index);

}






Qt Code: 
  1. BaseDelegate::BaseDelegate( QTableView *ta , QObject *parent )
  3. {
  4.   tas = ta;
  5. }
  6.  
  7. void BaseDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
  8. {
  9.     /////////qDebug() << "### index-column   " << index.column();
  10.  
  11.     if (index.column() == 0) {
  12.         int xnummer = index.model()->data(index, Qt::DisplayRole).toInt();
  13.         this->createEditor(tas, option, index);
  14.  
  15.     } else if (index.column() == 1) {
  16.         QString coder = index.model()->data(index, Qt::DisplayRole).toString();
  17.         QStyleOptionViewItem myOption = option;
  18.         myOption.displayAlignment = Qt::AlignLeft | Qt::AlignVCenter;
  19.         myOption.palette.setColor( QPalette::Text , Qt::red );
  20.         drawDisplay(painter, myOption, myOption.rect,coder);
  21.         drawFocus(painter, myOption, myOption.rect);
  22.  
  23.     }  else if (index.column() == 8) {
  24.         QString anno = index.model()->data(index, Qt::DisplayRole).toString();
  25.         //////////////QString coda = BerufHuman(coder);
  26.         QStyleOptionViewItem myOption = option;
  27.         myOption.displayAlignment = Qt::AlignLeft | Qt::AlignVCenter;
  28.         if (anno !="0") {
  29.         myOption.palette.setColor( QPalette::Text , Qt::gray );
  30.         } else {
  31.         myOption.palette.setColor( QPalette::Text , Qt::white );
  32.         }
  33.         drawDisplay(painter, myOption, myOption.rect,anno);
  34.         drawFocus(painter, myOption, myOption.rect);
  35.  
  36.     } else{
  37.         QItemDelegate::paint(painter, option, index);
  38.     }
  39. }
  40.  
  41. QWidget *BaseDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
  42. {
  43.      if (index.column() == 11 || index.column() == 7 ) {
  44.         QDateTimeEdit *editor = new QDateTimeEdit(parent);
  45.         editor->setDisplayFormat("dd.MM.yyyy");
  46.         editor->setCalendarPopup(true);
  47.         return editor;
  48.      } else if (index.column() == 0) {
  49.         Base_Button *editora = new Base_Button(parent);
  50.         return editora;
  51.      }  else {
  52.         return QItemDelegate::createEditor(parent, option, index);
  53.     }
  54. }
  55.  
  56. void BaseDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
  57. {
  58.  
  59.     if (index.column() == 11 || index.column() == 7 ) {
  60.         QString dateuser = index.model()->data(index, Qt::DisplayRole).toString();
  61.         QDateTimeEdit *editorrun = qobject_cast<QDateTimeEdit *>(editor);
  62.          if (editorrun) {
  63.             editorrun->setDate(QDate::fromString(index.model()->data(index, Qt::EditRole).toString(), "dd.MM.yyyy")); 
  64.          }
  65.  
  66.     }  else if (index.column() == 0) {
  67.         int xnummer = index.model()->data(index, Qt::DisplayRole).toInt();
  68.         Base_Button *editorax = qobject_cast<Base_Button *>(editor);
  69.         editorax->SetNummer(xnummer);
  70.      } else {
  71.         QItemDelegate::setEditorData(editor, index);
  72.     }
  73. }
  74.  
  75. void BaseDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
  76. {
  77.      if (index.column() == 11 || index.column() == 7 ) {
  78.         QDateTimeEdit *dateEditor = qobject_cast<QDateTimeEdit *>(editor);
  79.         if (dateEditor) {
  80.             model->setData(index,dateEditor->date().toString("dd.MM.yyyy"));
  81.         }
  82.     } else if (index.column() == 0) {
  83.         Base_Button *editorax = qobject_cast<Base_Button *>(editor);
  84.           model->setData(index,editorax->GetNummer());
  85.      } else {
  86.         QItemDelegate::setModelData(editor, model, index);
  87.     }
  88. }
  89.  
  90.  
  91. class Base_Button: public QWidget
  92. {
  93.     Q_OBJECT
  94. //
  95. public: 
  96.     QPushButton *pushButton;
  97.  
  98. Base_Button( QWidget *parent )
  99. : QWidget(parent)
  100. {
  101.     setAttribute(Qt::WA_WindowPropagation);
  102.     QVBoxLayout *widgetLayout = new QVBoxLayout(this);
  103.     widgetLayout->setMargin(0);
  104.     widgetLayout->setSpacing(0);
  105.     pushButton = new QPushButton(this);
  106.     pushButton->setText(tr("Edit Nr. 0"));
  107.     widgetLayout->addWidget(pushButton);
  108. }
  109. void SetNummer( int numero ) {
  110.    identificativo = numero;
  111.    pushButton->setText(tr("Edit Nr. %1").arg(identificativo));    
  112. }
  113. int GetNummer() {
  114.    return identificativo;
  115. }
  116. private:
  117.     int identificativo;
  118.     QSize sizebase;
  119. protected:
  120. signals:
  121. public slots:
  122.  
  123. };
  124.  
  125.  
  126. class BaseDelegate : public QSqlRelationalDelegate
  127. {
  128.     Q_OBJECT
  129.  
  130. public:
  131.     BaseDelegate( QTableView *ta , QObject *parent );
  132.     void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
  133.     QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const;
  134.     void setEditorData(QWidget *editor, const QModelIndex &index) const;
  135.     void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
  136. private slots:
  137. private:
  138.     QTableView *tas;
  139.     QObject *sap;
  140.  
  141. };
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