dmatetelki / qtmindmap Goto Github PK

when i use make command, the error occurs:
src/main.cpp:16:18: error: variable has incomplete type 'QApplication' QApplication a(argc, argv); ^ /anaconda/include/qt/QtCore/qobject.h:453:18: note: forward declaration of 'QApplication' friend class QApplication; ^ src/main.cpp:45:13: error: use of undeclared identifier 'QMessageBox' QMessageBox::critical(0, ^ src/main.cpp:50:9: error: incomplete type 'QApplication' named in nested name specifier QApplication::setQuitOnLastWindowClosed(false); ^~~~~~~~~~~~~~ /anaconda/include/qt/QtCore/qobject.h:453:18: note: forward declaration of 'QApplication' friend class QApplication; ^ 3 errors generated. make: *** [main.o] Error 1