| QGIS API Documentation
    3.20.0-Odense (decaadbb31)
    | 
#include "qgslayoutqptdrophandler.h"#include "qgslayoutdesignerinterface.h"#include "qgslayout.h"#include "qgsreadwritecontext.h"#include "qgsproject.h"#include "qgslayoutview.h"#include <QMessageBox>