How to add messages and tasks to a splash screen progress in an Eclipse RCP application

I have an Eclipse RCP 开发者_如何学Goapplication which does some time consuming things in the start method of the activator. Now I want to show user friendly messages for these things with progress indication in the splash screen but I do not find any solution for this.

I managed it to have a progressbar with messages in the splash screen but the only thing it shows is "Load Workbench" and this after all the time consuming things are done.

So my question is: how can I add tasks with user friendly messages to the splash screen progress?

Thanks in advance, Michael

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You need to extend org.eclipse.ui.splashHandlers extension point.