The launched signal is emitted when a AppInfo is successfully launched.
The platform_data
is an GVariant dictionary mapping strings to variants (ie `a{sv}`), which contains additional,
platform-specific data about this launch. On UNIX, at least the `pid` and `startup-notification-id` keys will be present.
Since 2.72 the `pid` may be 0 if the process id wasn't known (for example if the process was launched via D-Bus). The `pid` may not be set at all in subsequent releases.
On Windows, `pid` is guaranteed to be valid only for the duration of the launched signal emission; after the signal is emitted, GLib will call close_pid. If you need to keep the Pid after the signal has been emitted, then you can duplicate `pid` using `DuplicateHandle()`.
info |
the AppInfo that was just launched |
platform_data |
additional platform-specific data for this launch |