C++ (Qt)
QT += widgets
 
INCLUDEPATH += "C:/Qwt-6.1.0/include"
LIBS += "C:/Qwt-6.1.0/lib/libqwtd.a"
 
SOURCES += \
    main.cpp
 

C++ (Qt)
#include <QApplication>
#include "qwt_plot.h"
 
int main( int argc, char *argv[] )
{
    QApplication app( argc, argv );
 
    QwtPlot plot;
    plot.show();
 
    app.exec();
}