export enum KeyModifiers {
    leftCtrl   = 1 << 0,
    leftShift  = 1 << 1,
    leftAlt    = 1 << 2,
    leftGui    = 1 << 3,
    rightCtrl  = 1 << 4,
    rightShift = 1 << 5,
    rightAlt   = 1 << 6,
    rightGui   = 1 << 7
}