iconNativeImage - The icon showing in thumbnail toolbar.
tooltipstring (optional) - The text of the button's tooltip.
flagsstring (optional) - Control specific states and behaviors of the button. By default, it is
flags is an array that can include following
enabled- The button is active and available to the user.
disabled- The button is disabled. It is present, but has a visual state indicating it will not respond to user action.
dismissonclick- When the button is clicked, the thumbnail window closes immediately.
nobackground- Do not draw a button border, use only the image.
hidden- The button is not shown to the user.
noninteractive- The button is enabled but not interactive; no pressed button state is drawn. This value is intended for instances where the button is used in a notification.