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R and gWidgets: Event trigger on close of a widget

I'm currently working on a small GUI based application using gWidgets (RGtk2). I've encountered a question which I was unable to solve by myself using the documentation provided in the gWidgets package:

Is it possible to trigger an event, i.e. a function, when the user clicks on the red cross to close the GUI / widgets/ main window? For usability reasons I don't want to have an extra button though it will definitely work.

PS: I don't think an example is necessary here but if any of you insists I will add one.

Solution

  • Try

    addhandlerdestroy( myWidget, handler = f_exit )

    where

    f_exit <- function( h,...
{
  # your code, maybe simply
  dispose( myWidget )
}