single instance

[sarojkumarjena]

How to create a single instance of a application.Like when I will click the new button in an editor only one window will appear.when I will click the new submenu next time if the window is already exists then no window will appear.How to do it.

[Lost User]

Use a Mutex http://www.ai.uga.edu/mc/SingleInstance.html regards

[jillzhang]

:):-Dwhen u open the application ,u check the appliction thread in system at first,not have,go!else show info!