I had happen many times when I wrongly closed the windows. Sometimes we may lose important files by closing the window by mistakes. Here after these mistakes can be corrected by having software GoneIn60s. For restoring the closed application all you have to do is follow the procedures:

• Click the X or press Alt-F4 to close an application
• To recover, right click the tray icon and choose an application
• Double click the tray icon to recover all applications
• If not restored, it is gone in 60 seconds

Afterwards you have to make changes for the application.
Changes:
20061202 – v1.1: Removes the closed apps from the taskbar, adds them to the tray menu. Restores closed apps on exit.
20061228 – V1.2: Recovered apps reappear properly.
-20070615 – V1.3: Added options to change the gone time, kill windows and ignore apps.
Try this thing and you can regain this closed application.
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