I have revisited this issue, since I want to use the long-press gesture to get a right -lick pop-up menu in my software.
(for cut/copy/paste etc…)
Otristan pointed out a setting on windows to enable right-click from long press, but that one is enabled in Windows by default, and disabling it/re-enabling it makes no difference to how Juce behaves.
I revive this thread because I also saw another post here about something very similar being requested also for Android: How to reach TextEditor context menus in Android? Long press or right click not working
And a post collecting issues about Juce and touch screens: Some observations from using Juce on touch screens
…Which this also very much is.