glgui event

(glgui-event guis t x0 y0)

glgui-event process an input event. It loops over all guis provided and sends events to their widgets's input handlers. It is mainly found in the second function (the loop) of the main program declaration.

Parameter	Description
g	Graphical User Interface (GUI) or a list of GUIs
t	Event type, e.g. EVENT_KEYPRESS
x0	First argument of event, e.g. x coordinate pixels or keyboard character
y0	Second argument of event, e.g. y coordinate in pixels

Example

Example from apps/DemoRedSquare/main.scm

(lambda (t x y) 
  (if (= t EVENT_KEYPRESS) (begin (if (= x EVENT_KEYESCAPE) (terminate))))
  (glgui-event gui t x y)
)