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笔记:
QML 各个Element对应的c++类(http://doc.qt.nokia.com/4.7-snapshot/qdeclarativeelements.html):
Item instantiates the C++ class QDeclarativeItem
Component instantiates the C++ class QDeclarativeComponent
QtObject instantiates the C++ class QObject
要点:
PieChart::PieChart(QDeclarativeItem *parent) :
QDeclarativeItem(parent)
{
// need to disable this flag to draw inside a QDeclarativeItem
setFlag(QGraphicsItem::ItemHasNoContents, false);
}
qmlRegisterType<PieChart>("com.mycompany.Charts", 1, 0, "PieChart");
import com.mycompany.Charts 1.0