Splash Screen waiting until thread finishes

Question

I still have a problem with the splash screen. I don\'t want to use the property SC.TopMost=true.

Now my application scenario is as follows:

Answer 1

Unfortunately I don't have enough reputation to comment on someones answer yet. :( This is meant to be the answer to Colonel Panics comment on Hans Passants answer.

His problem was that a MessageBox shown from new FormMain(args)will be shown behind the splash screen. The key is to invoke the MessageBox from the thread the splash screen runs in:

splashScreen.Invoke(new Action(() => {
    MessageBox.Show(splashScreen, "the message");
}));

Where splashScreen is a reference to the splash screen object that has been created in OnCreateSplashScreen and obviously has to be given to the new Form1 object.