#include <string>
#include <vector>
+class GLWidget;
class QResizeEvent;
namespace Ui {
+class Display;
class MainWindow;
} // namespace Ui
private:
Ui::MainWindow *ui;
QPushButton *transition_btn1, *transition_btn2, *transition_btn3;
+ std::vector<Ui::Display *> previews;
};
extern MainWindow *global_mainwindow;