你好 Zhao Weilun,

you possibly mean to execute any of the usermode-gtk application such as
userpasswd, etc. I'm not a metacity user at all so maybe there's some kind of
incompatibility here in contrast with another window managers?

Ray, is there something on the usermode side I can fix to let the correct icon
be displayed in the title bar? Maybe some additional tweaks to *.desktop files
are needed?

Hi Jindrich,

The icons in desktop files are not automatically associated with window icons.

You can either call

gtk_window_set_icon_name (window, "the-icon-name");

for a specific window or

gtk_window_set_default_icon_name ("the-icon-name");

so it will happen for all windows.

"the-icon-name" is the name listed in the [Desktop Entry] section of the
.desktop file on the line that starts with Icon=

Ray, thanks, now I know what reporter actually wants.

This is now fixed.