| QGIS API Documentation
    3.20.0-Odense (decaadbb31)
    | 
#include <QHBoxLayout>#include "qgsprojectionselectionwidget.h"#include "qgsapplication.h"#include "qgsprojectionselectiondialog.h"#include "qgsproject.h"#include "qgssettings.h"#include "qgshighlightablecombobox.h"#include "qgscoordinatereferencesystemregistry.h"#include "qgsdatums.h"