DataBrowserDrawItemProcPtr

DataBrowserDrawItemProcPtr
Header:	ControlDefinitions.h		Carbon status:	Under Evaluation

typedef void(* DataBrowserDrawItemProcPtr) (
    ControlRef browser, 
    DataBrowserItemID item, 
    DataBrowserPropertyID property, 
    DataBrowserItemState itemState, 
    const Rect *theRect, 
    SInt16 gdDepth, 
    Boolean colorDevice
);

You would declare your function like this if you were to name it MyDataBrowserDrawItemCallback:

void MyDataBrowserDrawItemCallback (
    ControlRef browser, 
    DataBrowserItemID item, 
    DataBrowserPropertyID property, 
    DataBrowserItemState itemState, 
    const Rect *theRect, 
    SInt16 gdDepth, 
    Boolean colorDevice
);