The documentation for XGetIconName comments:
The XGetIconName function returns the name to be displayed in the spec‐
ified window's icon. If it succeeds, it returns a nonzero status; oth‐
erwise, if no icon name has been set for the window, it returns zero.
If you never assigned a name to the window, XGetIconName sets
icon_name_return to NULL. If the data returned by the server is in the
Latin Portable Character Encoding, then the returned string is in the
Host Portable Character Encoding. Otherwise, the result is implementa‐
tion-dependent. When finished with it, a client must free the icon
name string using XFree.
...without specifying a way for the implementation to know that the value
is/is not in ISO-8859-1 ...
while _NET_WM_ICON_NAME is the one which is documented to support UTF-8.
--
Thomas E. Dickey <dickey@invisible-island.net>
http://invisible-island.net
ftp://invisible-island.net
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