Check the HostPluginDemo example

JUCE 7 has a HostPluginDemo example.

BUT

The example doesn't even work out of the box. You cannot scan for plugins unless you change the settings as per https://forum.juce.com/t/example-of-hosting-a-plugin/52193/9. Don't they even test their own examples?
The entire example has no comments. How is one supposed to learn anything?
I seem to need to prefix things with juce:: while their "example" doesn't
Even once you succeed in loading Dexed, it doesn't produce any sound. I doubt the example is useful for anything?
It is just one .hfile and not a collection of .cpp and .h files. If this is supposed to help learning how to do things, why don't they show how things are actually to be done?
They show how to open a new window with the GUI of the hosted plugin (e.g., Dexed). But even in their example they don't manage to get a proper "close" button in the window decoration, and are using a normal button inside the window to close the button. How poor!
Loading Dexed GUI into the current window, using that example, then trying to close it using the button crashes REAPER. So not even their example works properly without crashing!
Loading Dexed GUI into a new window, then selecting a patch from the Dexed drop-down crashes REAPER as well. So not even their example works properly without crashing!

Things like this make me really dislike JUCE because everything seems way more complicated than it should be and the examples are half-baked.

probonopd / MultiDexed