[platform-swt-dev] force widget text to write message

[Peter <scamatrallera@xxxxxxxxx>]

hi,
I have a sequence like this in main thread

//...
1) dialogText.setText("Updating Domain");
2) updateDomain(o);
3) domainTreeViewer.refresh();
//...

2) is a long operation and I want do display the message 1) before it  
starts, however the message appear in the text widget only after the  
end of operation 2)

How can I force the message to be written immediately?

Thanks and have a nice day!