App UI - tab - merge with Titlebar

[user0]

XnViewMP 1.4.4 64bit
Windows11 (22H2), display resolution 3840x2160, win scaling 150%

Suggestion
modern UI for Titlebar and Tabs
- remove Titlebar (eg in same way as File Explorer / Chrome or Edge)
- make tab slightly wider (Browser tab can be shorter)
- make close button less visible

titlebar.png

Related

• issues
  Viewer - fix unnecessary window manipulations

• suggestions
  App UI - tools - file list - unify behavior
  App UI - layout - rework functionality
  App UI - tab - rework Dirty indicator
  App UI - tab - add drag-and-drop functionality
  App UI - tab - merge with Titlebar (current post)

[xnview]

Titlebar and tabs are from QT, so no easy to customize...