Hello Don, and other interested parties!
I have been lurking for AGES on the forums, and I love the
XYplorer application.
There is no other file manager that compares really (I think I have tried them all).
I have a really annoying issue that I hope the forum members and Don may help me with.

I use a
Wacom graphics tablet for much of my work.

I use four monitors and I use a virtual KVM server called "
Synergy" that allows one mouse and keyboard to control multiple systems much the same way a VNC application works to mimic the keyboard and mouse.

Now to the issue. As many of you know, most stylus pens or digitizer pens have no scroll wheel. If you have over one million files across several networked systems and multiple drives, you really need an effective scroll capability. Especially since I edit ebooks and code web-pages and manage servers over VPN and VNC connections.
I installed a nifty AWESOME little utility called
DragToScroll v2.4. This is a compiled executable
AutoHotKey script that basically emulates flick gesture scrolling across the entire Windows GUI without raising the X-Window level or giving a window focus in any application. This works anywhere you have scroll bars, a slider (volume, etc), or where arrow keys can be used to change a control. Just like the
KatMouse utility does for the mousewheel (which works PERFECTLY in all controls on
XYplorer I am thrilled to report).
DragToScroll adds momentum like the iOS and Win8 touch features have. You HAVE to try it, you will be hooked. Not much use with a real mouse (use
KayMouse) amazing for a touchpad or pen!
I map a Wacom-stylus-button as the middle-mouse-button (WheelButton) which then allows perfect flicking and inertial scrolling through large files, folders containing thousands of files, etc. This also emulates the smooth iOS and Win8 type of scrolling if you use a tablet over VNC and use your fingers to get around. It drastically improves the ability to VNC into a remote system with just a tablet by allowing your fingers, a stylus, or digitizer pen, to scroll any windows GUI control.

I use a pen, because if you have to copy and paste and edit code for hours and hours on end, a mouse can cause severe cramps, whereas a pen, does not seem to do that.

Yes, I could simply use a Mouse-Pen, but then I do not have the other features that the Wacom has. (I may look into that in the future actually)
DragToScroll does not work at all, in
XYplorer.

I cannot drag to scroll, or flick and scroll any of the controls in the program (except the embedded IE controls). I thought this software may give clues and reasons as to why the
XYplorer seems to completely ignore the ScrollMessage and WheelMessage common API calls that this, or many other modern mouses (mice is only for animals), pens, or touchpads send to software to affect system-wide scrolling. Most other file managers I have tried seem to work, at least basically with
DragToScroll, but
XYplorer just completely ignores it no matter what I do.
XYplorer is by far the best file manager, file database, and search management system I have found to date.

The
Wacom driver scrolling is useless, and dangerous to use! It is choppy and annoying, and even at max speed it barely moves. The
Wacom tablet has multitouch features, which do work, but it is WAY too easy to move or drop files in the wrong place due to network lag, or because the driver does not carry well at all through VNC connections. Very bad idea to even try it on a folder with a few hundred subfolders and thousands of files (learned from experience). I think the code is just too bloated and uses too much bandwidth or something to work properly over VNC or a virtual KVM.

Incidentally
Synergy, over VNC, with
KatMouse installed on the target system works Perfectly with
XYplorer to allow effortless scrolling of all GUI controls in the program, and the Windows GUI. So, whatever API
KatMouse uses works perfectly.
After that detailed explanation, I merely hope for a way to allow the
DragToScroll utility to reach through the
XYplorer code to the basic Windows controls and hopefully work as with all other parts of the Windows GUI. I have a suspicion that if this can be solved, it may resolve any other scrolling issue that touchpads or touchscreens may have also with
XYplorer. Yes, I did read all the old posts about
Intellimouse around release-7 of
XYplorer and how Don had to add a bunch of code to handle
Logitech mouse drivers.

- Also, why when I middle click and drag in
XYplorer I either get a transparent selection box (very weird) or I get a tiny popup message in a tooltip that informs me [Nothing To Paste]? I have never experienced this odd behaviour in any other application in Windows.

Is there some sort of hook, or setting that prevents the scrolling message to reach the
XYplorer Mouse Engine? I have carefully disabled everything I can find that deals with middle click everywhere in the entire program!

Also, a related feature you may wish to add is a sticky list selection only on middle click to allow multiple separated list selections with a tablet or touchpad that has no keyboard available for holding the Ctrl key while left-clicking list items.
I am sorry for the long post, but I have scoured the forums and experimented with drivers, Windows, and mouse settings. The behaviour is only apparent in
XYplorer, and nothing I can do improves it. Most of the experimenting I did, only resulted in losing functionality either in the general Windows GUI, or one or more of the other linked systems.