Bring A Large Pot Of Lightly Salted Water To A Boil. Add Pasta And Cook For 8 To 10 Minutes Or Until Al Dente; Drain. While Pasta Is Cooking, In Large Skillet Over Medium Heat, Saute Onion In Butter 2 Minutes. Stir In Garlic And Zucchini And Cook 3 Minutes More. Add Mushrooms And Cook 5 Minutes More, Until Mushrooms Are Soft. Pour In Red Wine And Pasta Sauce, Reduce Heat To Low And Simmer. Add Corn And Bring Back To A Simmer Again To Heat Through. Serve Sauce Over Pasta With A Dab Of Butter, Or Toss Together.