thanks for the tips. that's exactly what I tried before: to set a "VTrayCurrentWidth 0" in themevars.rc, but it didn't work. I tried again, and I set it in another include-file ("variables.rc"), but got no response from vtray's current width.

This is how I'm testing it:
TaskbarWidth $ResolutionX-VTrayCurrentWidth$
Result: it occupies the whole screen.

I've already set VTrayWidth to both autosize or a fixed size, or didn't write anything at all (default).

What am I missing? Any other idea?