I would like to bind the ESC key to middle mouse button. So I can play with mouse only.

[Eggiwex]

Sometimes I just like to lean back to play only with the mouse and can't reach the keyboard :)
I need to use ESC to close some menus though
Maybe there is a way to do this already but I didn't found out how.

[Kitsune Games]

While you're in an actual game you should be able to close all menus using the mouse. Close the stats, forms, and equipment menus using the buttons in the lower left of the screen, above your portrait and level.

If you need more than that might I suggest AutoHotKey to map the escape key to your mouse:

1. Install AutoHotkey[www.autohotkey.com]
   
2. Open Explorer
   
3. Right Click → New → AutoHotkey Script (.ahk)
   
4. Open .ahk file
   
5. Add line "MButton::Escape" at the bottom
   
6. Save file
   
7. Double click .ahk file to run, OR Right click script → Compile Script → Run resulting .exe

Key list names can be found here: https://autohotkey.com/docs/KeyList.htm

You can also set hotkeys to only one window by putting it inside a block like this:

#IfWinActive, ahk_exe midboss.exe
{
MButton::Escape
}

[Eggiwex]

Alright, that's a bit inconvenient but thanks for the hint anyway.

[Truest1]

Good info. How do I make Mouse button 3 the escape button?

[piccolo255]

Ursprungligen skrivet av Truest1:

Good info. How do I make Mouse button 3 the escape button?

To use any other mouse button, first find it here:
https://www.autohotkey.com/docs/v1/KeyList.htm#mouse-general

Then, replace the "MButton" in the script above with another button from the list.

The extra buttons (back/forward) are usually "XButton1" and "XButton2", so you'd have "XButton1::Escape" etc.