David Kastrup wrote:
Jason Rumney <address@hidden> writes:
Emacs uses frames for its tooltips on all platforms. To change this on
Windows would make it more difficult to maintain, and would lose
functionality.
Are you sure about that? Under X11, tooltips come without any
decoration and without any impact on the focus (I have
focus-follows-mouse policy). I never noticed _any_ problem with them.
Yes I'm sure, the Windows implementation was based on the X11
implementation. They are special frames in that they have the
properties you observe, but they are still frames and you can use all
of Emacs' non-input related display features in them.
If users of Emacs on Windows experience similar effects
They're not quite as bad as XEmacs' problems I think, there seems to be
a bug in the code that makes sure the tooltip doesn't get focus which
causes problems when there are multiple frames. Apart from that they
appear a bit slow on slow machines due to being drawn by the normal
Emacs redisplay instead of being simple fixed plaintext like in other
programs.
At least the X11 tooltips on Emacs provide no functionality
whatsoever except popping up some text in a single font AFAICS. No
face support, no clickable areas, nothing.
I'm sure I've seen face support used in tooltips. Maybe only text
properties work, the face is probably forced to "tooltip".
So if there is a function for popping them up in the system, I can't see what we could lose by
using it.
I don't think there is a function for popping them up in the system.
Many armchair critics are not aware of the distinction between
Microsoft's proprietary C++ GUI toolkit (MFC) and what is available
directly from the OS APIs, so we often get slated for not using feature
X, when reimplementing it using the OS APIs is non-trivial.
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