Yes. You can easily check this, by using wmctrl as
an alternative way to obtain a window ID in hexadecimal.
This will show the window ID in hexadecimal of
a window with title My dialog title:
wmctrl -l | grep "My dialog title" | cut -f 1 -d ' '
I got the value of 0x02800003 displayed on my screen,
but you will probably have a different value.
Feeding that hexadecimal value to xdotool does activate the window:
xdotool windowactivate $(wmctrl -l | grep "My dialog title" | cut -f 1 -d ' ')
xdotool can unsually extract the ID of a Qt application
from its window title, as shown by
this StackOverflow question.
If something is wrong, a workaround is to use wmctrl
to obtain the window ID:
xdotool windowactivate $(wmctrl -l | grep "My dialog title" | cut -f 1 -d ' ')
Replace 'My dialog title' for the window name you are looking for.
Note that wmctrl displays the window ID in hexadecimal. This is no
problem for xdotool!