#define MAXCLIPDURATION 15000
enum OPERATIONTYPE { NONE = 0, MOVE = 1, RESIZESTART = 2, RESIZEEND = 3, FADEIN = 4, FADEOUT = 5, TRANSITIONSTART = 6, TRANSITIONEND = 7};
-enum CLIPTYPE { UNKNOWN = 0, AUDIO = 1, VIDEO = 2, AV = 3, COLOR = 4, IMAGE = 5, TEXT = 6, SLIDESHOW = 7, VIRTUAL = 8, PLAYLIST = 9};
+enum CLIPTYPE { UNKNOWN = 0, AUDIO = 1, VIDEO = 2, AV = 3, COLOR = 4, IMAGE = 5, TEXT = 6, SLIDESHOW = 7, VIRTUAL = 8, PLAYLIST = 9, FOLDER = 10};
enum GRAPHICSRECTITEM { AVWIDGET = 70000 , LABELWIDGET , TRANSITIONWIDGET };
enum TRANSITIONTYPE {