Says I am missing a .dll file that is there

[bijan311]

I just installed QT4 and i read this tutorial for a hello world program. When i compile it it say I do not have the QTCore4.dll file so the .exe file cannot run. I then looked in the QT folder and i found QTCore4.dll in the bin folder. Here is my code if it matters.

#include <QApplication>
#include <QPushButton>
 
int main(int argc, char *argv[])
{
    QApplication app(argc,argv);
 
    QPushButton test("I am testing my first GUI application");
    test.show();
 
    return app.exec();
}

#include <QApplication>
#include <QPushButton>

int main(int argc, char *argv[])
{
    QApplication app(argc,argv);

    QPushButton test("I am testing my first GUI application");
    test.show();

    return app.exec();
}

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I am also using the Code::Blocks IDE with the MinGW compiler. Thanks.