Launching Opus from the Desktop

The options here let you launch Opus or run another command by double-clicking on the Windows desktop. This can provide an extremely quick way to access a Lister when you have no windows currently open - simply find an empty area of the desktop (one with no icons on it) and double-click.

• Disable: Select this to disable double-click on the desktop.
• Bring the last active Lister to the front: If there are one or more Listers already open, a double-click on the desktop will bring to the front the one you used most recently. If no Listers are open a new one is opened using the Default Lister settings.
• Open the Default Lister: Opens a new Lister using the settings for the Default Lister.
• Open a saved Lister layout: Opens a saved Lister layout. If you turn on the Close existing Listers option then any existing Listers will be closed before opening the layout - if this is off, existing Listers will be unaffected.
• Run a defined User command: Lets you select a User command from the drop-down to be run whenever the desktop is double-clicked. This can be used to perform more complex actions including running external programs.

When any of the double-click options are enabled, Opus launches a small helper application called dopusrt.exe that runs continuously in the background. This is added to the registry to run automatically on startup, and means that double-click on the desktop works even when Opus itself isn't running (dopusrt.exe will launch Opus automatically if it's not already running when you double-click).

In order to trap double-clicks on the desktop (which runs in another process to Opus) it's necessary to "inject code" into Explorer - if you have an anti-virus or anti-spyware tool installed you may find it detects this and complains. If you find that double-click on the desktop isn't working check if something is blocking dopusrt.exe from hooking into Explorer or from running on startup.