https://bugs.kde.org/show_bug.cgi?id=485829

            Bug ID: 485829
           Summary: Hide "Virtual Display" button or show instructions, if
                    krfb / krdc are not installed
    Classification: Applications
           Product: kdeconnect
           Version: unspecified
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: plasmoid
          Assignee: albertv...@gmail.com
          Reporter: fabian.ar...@root-core.net
  Target Milestone: ---

SUMMARY

A button should only be shown, if there is any functionality behind it.
Therefore it shouldn't be shown if the prerequisite is missing.
It should at least give the user some kind of feedback, if the triggered
functionality isn't available or failed executing.

STEPS TO REPRODUCE

1. Pair two computers, lacking krfb/krdc
2. Activate "Virtual Monitor" plugin
3. Open Plasmoid
4. Click "Virtual Display"

OBSERVED RESULT

The current implementation fails silently, if krfb (guest) or krdc (host) are
not installed.
Nothing happens, if you click the "Virtual Display" button.

EXPECTED RESULT

The plugin / plasmoid should check if host and client are capable to establish
a "Virtual Display" connection, which requires kfrb to create a virtual display
and krdc to host it. 

There should/could be some instruction or hint, if this is not the case.
If we don't want to implement this, we should at least hide the button.

SOFTWARE/OS VERSIONS

Linux: Nobara Linux 39
KDE Plasma Version: 6.0.3
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2

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