# EVENT_HSCROLL

Object Types: Trees and tabs.

Description:
Tree Controls—Horizontal scroll events are sent to the callback function associated with the tree control when the user scrolls a tree horizontally.
Tab Controls—Horizontal scroll events are sent to the callback function associated with the tab control when the user scrolls through the tab control.

Event Data Parameters:

eventData1 = oldScrollOffset
eventData2 = newScrollOffset