QuickLaunch widget no longer available?

[rybnik]

backstory: As of today, I'm back with Kubuntu after a 1.5 year (approx.) stint with openSUSE KDE. The last time I ran kubuntu, it was 12.04 LTS (precise). Now, I'm running 15.04 (vivid).

Back when I ran kubuntu precise and opensuse, I remember a widget called "quick launch" on which you could put shortcuts to applications. But now I no longer see that in the list of available widgets... (Q1) is QuickLaunch still available?

Also, I see that I can't drag an application to a desktop panel to make a shortcut for it there... I remember being able to do that too back in 12.04 (and also in opensuse). (Q2) Is there a way to do that?

I know that 15.04 has Plasma 5... so I suppose my difficulties have something to do with what got changed apropos.

[rybnik]

Ah, I see. I have a feeling that I'll like Plasma 5 more than Plasma 4 once certain things (such as this) are eventually resolved.

Certain widgets, though, are available but not as functional as they were in Plasma 4. The "notes" widget, for instance, doesn't let me change the background color. Also, the RAM-meter doesn't display any numbers, just shows a vial partially filled without numeric labels.

One last thing I'll complain about--I like having the "show desktop" icon in the far right of the taskbar, but Plasma 5 doesn't let me do that because the "cashew" is locked into the rightmost position.

[kubicle]

One last thing I'll complain about--I like having the "show desktop" icon in the far right of the taskbar, but Plasma 5 doesn't let me do that because the "cashew" is locked into the rightmost position.

You can lock your widgets (right-click on desktop>>lock widgets) and the cashew goes away (you can unlock again if you wish to add/remove/move your widgets around)

[rybnik]

Thanks, kubicle! That indeed works.

While we're on the subject of Plasma 5, I used to like the Plastique widget style, but I see that's no longer available. Is there a way to install it? I didn't see anything by way of a "get more" button or something similar.