Capturing Arrow Keys from numericupdown box

Hi, I currently want to capture and override some .Net default functions so I can use the arrow keys to activate the keypressed event in the numericupdown box. I found this article on the website, but the syntax I am assuming is not for C++. I was wondering if anyone have a C++ equivalent of the function in the article below. Thanks! http://www.syncfusion.com/faq/windowsforms/search/544.aspx

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