| QGIS API Documentation
    3.20.0-Odense (decaadbb31)
    | 
#include "qgscoordinateoperationwidget.h"#include "qgscoordinatetransform.h"#include "qgsprojectionselectiondialog.h"#include "qgslogger.h"#include "qgssettings.h"#include "qgsproject.h"#include "qgsguiutils.h"#include "qgsgui.h"#include "qgshelp.h"#include "qgsinstallgridshiftdialog.h"#include <QDir>#include <QPushButton>#include <QRegularExpression>#include "qgsprojutils.h"#include <proj.h>