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There is plenty of information about creating a launcher for the Unity Dash. No problems there. However when you right-click on an application, it is possible for the Dash to display much more detailed information about the program.

How can I do this with a custom launcher? I have created several .desktop files and they work perfectly, but I have several very similar versions and want to be able to right-click and get more information about the specifics of each launcher.

Is this possible in Ubuntu?

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up vote 1 down vote accepted

The Dash > preview takes/displays the info from the app's package info, specifically Description:

For a custom .desktop you could use a 1 line description via a Comment=line in the .desktop

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