RE: [External] : Q4 - the bottom edge of Emacs doesn't stick to the taskbar

[Drew Adams <drew.adams@oracle.com>]

> When I use this
> 
> *(add-to-list 'default-frame-alist '(height . 1.0))*
> 
> to tell Emacs be of all height, it takes it too literaly, and its bottom
> edge is shown hidden behind the taskbar line. What should I do to make
> it stick to the taskbar's up border?

1. Emacs knows nothing about the MS Windows task bar.  (And the task
bar can be displayed in different places; it's not necessarily at
the bottom of the screen.)

2. See (elisp) `Size Parameters', for `width' (height is analogous):

     a floating-point value
          A floating-point number between 0.0 and 1.0 can be used to
          specify the width of a frame via its “width ratio”—the ratio
          of its outer width (*note Frame Geometry::) to the width of
          the frame’s workarea (*note Multiple Terminals::) or its
          parent frame’s (*note Child Frames::) native frame.  Thus, a
          value of 0.5 makes the frame occupy half of the width of its
          workarea or parent frame, a value of 1.0 the full width.
          Similarly, the “height ratio” of a frame is the ratio of its
          outer height to the height of its workarea or its parent’s
          native frame.

          Emacs will try to keep the width and height ratio of a child
          frame unaltered if that frame has a non-‘nil’ ‘keep-ratio’
          parameter (*note Frame Interaction Parameters::) and its
          parent frame is resized.

          Since the outer size of a frame is usually unavailable before
          a frame has been made visible, it is generally not advisable
          to use floating-point values when creating decorated frames.
          Floating-point values are more suited to ensure that a child
          frame always fits within the area of its parent frame as, for
          example, when customizing ‘display-buffer-alist’ (*note
          Choosing Window::) via ‘display-buffer-in-child-frame’.

So you will likely want to use an integer value, not a decimal
value (what the doc calls a floating-point value), e.g., 35
(characters), instead of 1.0.

To avoid the task bar, specify also a value for frame parameter
`top'.