Ihre Kommentare
http://code.google.com/p/jumplist-extender/
I can't say for sure, though, as I haven't tried it myself.
You can as well write an application from scratch.
I don't see how the source code of the tweaker will help you.
The only relevant thing it provides is a readily injected DLL, which I'm not even sure is needed here.
It doesn't have code that manipulates either the jump list or the classic window menu.

Can be achieved with Shift+Right click.
(after some Googling)
http://code.google.com/p/jumplist-extender/
I've never used it, so I can't say how well it works, but seems like it does what you're asking.
First of all, I believe that using Taskbar Inspector would be a quicker workaround than opening the tweaker and changing settings.
For a more straightforward solution...
1 is not too easy, as the taskbar is not designed to change the options of the tweaker. That's possible, of course, but I'd prefer not to implement that.
2 is also not too perfect, as thumbnails do not always correspond to taskbar buttons, e.g. when an application uses thumbnails to show it's tabs, like IE.
How about this:
I'll see if I can add an option to assign a mouse event to temporary decombining of a single item, e.g. you could set Ctrl+click to temporary decombine a group, and it will be recombined when the mouse leaves.
I agree that it would be a useful addition.
I'll implement it for the next version.
Customer support service by UserEcho
I have a window with lots of checkboxes, where I ran out of space.
Now I'm adding most of the new tweaker to what I call "advanced options".
But yes, it works, and it's probably good enough.
> If you do choose to keep it closed, at least consider the possibility of making it pluggable.
I'm open to suggestions :)
> Add the Donate link in the Suggestions page.
Done, thanks for the tip.
And thanks for the donation, I really appreciate it!