DSView is now the default app for .dsl files and added to 'Open With'

[kasra3422]

Issue:
In Ubuntu and likely other Linux distributions, DSView is not listed in the 'Open With' applications. Solution:

1. Update 'Exec=DSView' to 'Exec=DSView %F' in the DSView.desktop file to add the application to the 'Open With' list.
2. Add 'MimeType=applications/dsl' to the DSView.desktop file to set the application as the default for opening .dsl files.

[tedy58]

Thanks @kasra3422 for the help hint!
one more switch could be use instead of %F (%U) which do the same.
I am using Debian 12 and desktop file is located normally in
/usr/share/applications/dsview.desktop and must be edited with super user privileges
with the following contect:

[Desktop Entry]
Type=Application
Encoding=UTF-8
Name=DSView
Comment=GUI Program for DreamSourceLab USB-based Instruments
TryExec=DSView
Exec=DSView %U
Icon=dsview
Terminal=false
Categories=Development;Electronics;Qt;
MimeType=applications/dsl

[kasra3422]

Thanks, @tedy58. Yes, I checked the available switches and updated the PR. The %U switch supports both files and URLs.

%F: A list of files. Use for apps that can open several local files at once. Each file is passed as a separate argument to the executable program.

%U: A list of URLs. Each URL is passed as a separate argument to the executable program. Local files may either be passed as file: URLs or as file path.