message aware apps receive a B_OPEN_IN_WORKSPACE with the workspace number as an Int32 "be:workspace". However if they take this into account (most do implicitely), they switch to this workspace. What I propose is we add a Bool ("dontswitch"), that would tell to silently open on the workspace without switching to it, so we can drop files/apps in the Workspaces app, and it would open in the workspace they are dropped without disturbing the current work. That could also enable using the command line: Workspaces 2 /boot/apps/3dmix to run silently from scripts without disturbing. (the BMessage BList version of using BRoster::Launch())

FrancoisRevol