[[the question of how an application can force some part of itself as the top level window is a FAQ]]

Could someone please write something here about the topic?

ptk*

'''Win32'''

The API function needed is:

  SetWindowPos(HWND hWnd,       // handle to window
               HWND hWndAfter,  // placement order handle
               int x, int y,    // position (horizontal, vertical)
               int cx, int cy,  // size (width, height) 
               UINT uFlags)     // positioning flags

The placement order handle can be either another HWND or once of the following constants:
   * HWND_BOTTOM (1) Moves to the bottom
   * HWND_NOTOPMOST (-2) Place above all non-topmost windows.
   * HWND_TOP (0) Move to the top
   * HWND_TOPMOST (-1) Move to the top and keep it there.
The Flags can be one of a number but for this page probably SWP_NOMOVE (2) and SWP_NOSIZE (1) are likely the most useful. So:
  SetWindowPos([winfo id .], HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE)
probably. So how would we like this to appear in Tcl? ''winfo topmost .'' ??