Casting QGraphicsItem child from QGraphicsItem

Why on qt4.4 i can not qgraphicsitem_cast child item?
on other lower version is possibel ... is this a Bug?

Quote:

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d:/qt4.4/include/QtGui/../../src/gui/graphicsview/qgraphicsitem.h: In function `
T qgraphicsitem_cast(QGraphicsItem*) [with T = AbsoluteLayer*]':
textapi\Layer_Auto_Extended.cpp:226: instantiated from here
d:/qt4.4/include/QtGui/../../src/gui/graphicsview/qgraphicsitem.h:945: error: ag
gregate value used where an integer was expected
d:/qt4.4/include/QtGui/../../src/gui/graphicsview/qgraphicsitem.h:945: error: ag
gregate value used where an integer was expected
mingw32-make[1]: *** [build/.obj/Layer_Auto_Extended.o] Error 1
mingw32-make[1]: Leaving directory `C:/_dev2/luxor_svn/fop_miniscribus.2.0.r1/sr
c'
mingw32-make: *** [debug] Error 2

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this is the error code piece....

Code:

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/* check if absolute layer need a new page document  */
void TextLayer::childAreaCheck()
{
    /////// qDebug() << "### childArea ";
    AbsoluteLayer *itemabsolute = 0;
    QList<QGraphicsItem *> subLevelItems = childItems();
    qreal lastdown = 400.0; /* A4:2 */
 
          for (int i = 0; i < subLevelItems.size(); ++i) { 
 
              if (itemabsolute = qgraphicsitem_cast<AbsoluteLayer *>(subLevelItems[i]) ) {
              itemabsolute->UpdatePageFormat();
              lastdown = qMax (lastdown,itemabsolute->pos().y());
              }
 
          }
 
          QPointF lastpoint(50.,lastdown);
          ////////qDebug() << "### childArea lastpoint " << lastpoint;
          const QRectF allpageRect = boundingRect();
          if (!allpageRect.contains(lastpoint)) {
            QTextCursor Tcursor = textCursor();
            Tcursor.movePosition(QTextCursor::End);
            Tcursor.beginEditBlock();
            Tcursor.insertText(" \t");
            Tcursor.setBlockFormat(PageBreackBlock());
            Tcursor.endEditBlock();
          }
}
 
/* type is declared */
 
 enum { Typex = UserType + 3 };
 int type() const { return Typex; }

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The docs say:

Quote:

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To enable use of qgraphicsitem_cast() with a custom item, reimplement this function and declare a Type enum value equal to your custom item's type.

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You don't have the Type enum, but Typex.

I solved on other Type to makeit readable ....

Code:

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enum { Layer = 1 };
int type() const {return Layer;}
 
 
template <class T> inline T layer_cast(QGraphicsItem *item)
{
    return int(static_cast<T>(0)->Layer) == int(AbsoluteLayer::Layer)
        || (item && int(static_cast<T>(0)->Type) == item->type()) ? static_cast<T>(item) : 0;
}
 
template <class T> inline T layer_cast(const QGraphicsItem *item)
{
    return int(static_cast<T>(0)->Layer) == int(AbsoluteLayer::Layer)
        || (item && int(static_cast<T>(0)->Type) == item->type()) ? static_cast<T>(item) : 0;
}
 
 
 
AbsText::AbsText()
  : device(0)
{ 
 
}
/* only one connect */
LayerText *AbsText::txtControl() const
{
    if (!device) {
       AbsoluteLayer *that = layer_cast<AbsoluteLayer *>(q); 
       device = new LayerText();  /* text-api all event */
       connect(device, SIGNAL(q_cursor_newPos() ),q, SLOT(cursor_wake_up()));
       connect(device, SIGNAL(q_update(QRect) ),q, SLOT(updatearea(QRect)));
       connect(device, SIGNAL(q_visible(QRectF) ),q, SLOT(ensureVisible(QRectF)));
       ///////connect(device, SIGNAL(q_update_scene()),q, SLOT(SceneReload()));
    }
    return device;
}

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You have to change Type to Layer in lines #8 and #14 too.