How do I setup for and/or handle onload event with GWT

Question

This has to be a pretty basic question but I cannot for the life of me find anything via Google or this site about how to do this and it\'s really frustrating because I\'ve

Answer 1

Most widgets and panels in GWT implements the HasAttachHandlers interface. Adding an AttachEvent.Handler to these widgets/panels is equivalent to defining a function to run onload.

An example:

FlowPanel mainPanel = new FlowPanel();
mainPanel.addAttachHandler(new AttachEvent.Handler() {

  @Override
  public void onAttachOrDetach(AttachEvent event) {
    // do something
  }
});