#include <QApplication.h>
#include <QPushButton.h>
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QPushButton hello("Hello world");
    hello.resize(100, 30);
    hello.show();
    return app.exec();
}
error C2664: '__thiscall QPushButton::QPushButton(class QWidget *,const char *)' : cannot convert parameter 1 from 'char [12]' to 'class QWidget *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
Error executing cl.exe.
xxx.obj - 1 error(s), 0 warning(s)