ViewerEventData

create: A new viewer has been created.
destroy: A viewer window has been destroyed.
load: A new image has been loaded in a viewer. The item property can be used to find out which file was loaded.
setfocus: The viewer window has received focus (gone active).
killfocus: The viewer window has lost focus (gone inactive).
click: The left button was clicked on the image (requires mouse buttons to be set to trigger Script event in Preferences / Viewer / Mouse Buttons ).
dblclk: The left button was double-clicked on the image.
mclick: The middle button was clicked on the image.

If a script implements the OnViewerEvent event, it receives a ViewerEventData object whenever certain events occur in a standalone image viewer.

Property Name	Return Type	Description
event	string	Returns a string indicating the event that occurred. The events currently defined are: create: A new viewer has been created. destroy: A viewer window has been destroyed. load: A new image has been loaded in a viewer. The item property can be used to find out which file was loaded. setfocus: The viewer window has received focus (gone active). killfocus: The viewer window has lost focus (gone inactive). click: The left button was clicked on the image (requires mouse buttons to be set to trigger Script event in Preferences / Viewer / Mouse Buttons). dblclk: The left button was double-clicked on the image. mclick: The middle button was clicked on the image.
item	object:Item	For the load event, returns an Item object representing the newly loaded image.
viewer	object:Viewer	Returns a Viewer object representing the viewer the event occurred in.
x	int	For the click events, returns the x coordinate within the viewer window that the click occurred.
y	int	For the click events, returns the y coordinate within the viewer window that the click occurred.
w	int	For the click events, returns the width of the viewer window.
h	int	For the click events, returns the height of the viewer window.