Qt 5.02 - How to add a MacOS Dock Icon?

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Yes, I went to Build -> Run qmake and it still didn't change the icon
Here is my icon in the resources.qrc
://images/mac/highres.icns

In two of the constructors I tried

#ifdef Q_OS_MAC
   this->setWindowIcon(QIcon("://images/mac/highres.icns"));
#endif

#ifdef Q_OS_MAC
   this->setWindowIcon(QIcon("://images/mac/highres.icns"));
#endif

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Both didn't work???

I also added the below snippet to my .pro file

macx {
    ICON = images/mac/highres.icns
}

macx {
    ICON = images/mac/highres.icns
}

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I reran qmake again but still no icon

I also took out the macx{ } parenthesis and ran qmake but to no avail

What else do I do? Someone please help me.