export declare enum MouseEventSource {
    Undefined = 0,
    ResizeBox_NW = 1,
    ResizeBox_NE = 2,
    ResizeBox_SE = 3,
    ResizeBox_SW = 4,
    ResizeBox_N = 5,
    ResizeBox_E = 6,
    ResizeBox_S = 7,
    ResizeBox_W = 8
}