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[news.eclipse.platform.swt] Re: SWT and UI Thread block
Mark Ingerman schrieb: 
I have a problem where I want the current UI execution to stop, and perform
some other ui (not a dialog box), and wait until that task is finished
before returning to the previous spot.

I have code that is running inside GEF that wants to put up a menu when the
end connection (mouse down) event is run.  I tried the following trick; it
works on the MAC and under windows, but not under Linux.  I wonder if there
is a better way.

Here is the code:

  do some code....

  Control c = Display.getCurrent().getFocusControl();
  if (c != null) {
    Menu old = c.getMenu();
    MenuManager mm = new MenuManager();
    for (String s : cats) {

      mm.add(new _Action(s, isSource));

    }

    final Menu m = mm.createContextMenu(c);
    c.setMenu(m);
    m.setVisible(true);
    c.getDisplay().readAndDispatch();

I could be completely wrong but this has to be a while loop checking if the menu is not disposed and call read and dispatch.

display = c.getDisplay();
while (!m.isDisposed ()) {
    if (!display.readAndDispatch ()) display.sleep ();
}

One more note I think you are leaking a menu/menu-item with the current code because your are not disposing of the menu but only nulling it.

Tom

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B e s t S o l u t i o n . at
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Tom Schindl                                          JFace-Committer
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