main.cpp

qt类库是非微软类库

#include <qapplication.h>
#include <qpushbutton.h>
int main(int argc, char* argv[])
{
QApplication app(argc,argv);
QPushButton* button = new QPushButton("Quit", 0);
QObject::connect(button, SIGNAL(clicked()), &app, SLOT(quit()));
//app.setMainWidget(button);
button->show();
return app.exec();
}