This GIO extension should make it easier to get values for an application
from the corresponding desktop file (typically G_KEY_FILE_DESKTOP_KEY_NAME
or G_KEY_FILE_DESKTOP_KEY_ICON).
At its first try, xfce_get_from_desktop_file will look for
$application_name.desktop and then return the respective key.
If no such desktop file is found, it will leverage GIO's
g_desktop_app_info_search to match a desktop file and then return
the values from that.
If no desktop file is found at all, the function returns NULL.
Here's an MR that showcases a use case for this function: xfce4-power-manager!25 Also, the (duplicate) code in xfce4-notifyd can be dropped as soon as 4.18 is released.
Related: apps/xfce4-notifyd!24 (merged), apps/xfce4-notifyd!26 (merged)