Someone

#include <ui_CUI.h>
#include <QApplication>
#include <QWidget>

int main (int argc, char *argv[]) {
	QApplication mainApp (argc, argv);
	QWidget *appHolder = new QWidget;
	Ui::CUI ui;
	ui.setupUi(appHolder);-

	appHolder->show();
	return mainApp.exec();
}