Hi Nudel! You've responded to a few of my posts over at the Dopus forum.
Not sure what you mean about the panel dividers,
AFAIK there is no way to set the Dopus panel divider percents from a button. Also, there is no way to control precisely where the panel dividers go when toggling quickview and folder trees off and on. Dopus uses some sort of "best guess" algorithm instead of letting me specify precisely where the dividers should always display under all circumstances. Invariably the dividers go in the wrong places for my use. I'm just tired of dragging them back into position, over and over and over.
To prove my point, display a Dopus lister in the "Dual Vertical" style. Set the folder tree dividers/splitters where you want them. Now go to the view menu and toggle one of the trees off. Watch what happens to the dividers. Now toggle the tree back on. Watch the dividers.
I tried using the Dopus "styles" functionality to set up all possible panel combinations with dividers in the desired positions, but there is no setting I have found that will "keep current paths" when toggling between styles, so that didn't work, either. Leaving the folder options unchecked in the left and right panel tabs of the Styles config panel doesn't do it, though it looks like it should.
And yes I put in an official bug report/request. The response was to deny that I was even experiencing the issue.
and the preview pane ("quickview") works for both left and right (or top and bottom) file display but only displays what's selected in the most recently active one.
If I highlight a file in the Dopus left panel, I want its quickview to appear in and (temporarily replace) the right panel (it does). But if I highlight a file in the right panel, then I want the quickview to appear in (and temporarily replace) the left panel (it doesn't). The official response to my official request for this behavior was something like "we don't do that".
To see how tabs should work, look at the SpeedCommander tab properties dialog. Then you may understand my point of view about the "incompleteness" of the Dopus tab implementation. The only thing missing from the SC tab implementation are a few minor functions I use in the TC tab context menu plus the ability to rearrange the SC tabs with the mouse.
Neither TC nor Dopus (nor xplorer2, for instance) subordinate the folder trees' visibilities to the tabs. SC does this. I much prefer that the individual tab control its own tree visibility. Some tabs don't need the folder trees and it is an inefficiency (not to mention a pain) to always have to toggle the tree off in those situations, then toggle it back on for the tabs that need it.
Etc, etc, etc...