/* "0 as the second parameter" refers to the call to real_window
above. This comment was taken from Ben's 21.5 code that differs
somewhat from this, I don't think the 21.4 code ever had a 0
/* "0 as the second parameter" refers to the call to real_window
above. This comment was taken from Ben's 21.5 code that differs
somewhat from this, I don't think the 21.4 code ever had a 0
second parameter, although only occasionally. It seems that
sometimes we receive events for scrollbars that don't exist
anymore. I assume it must happen like this: The user does
second parameter, although only occasionally. It seems that
sometimes we receive events for scrollbars that don't exist
anymore. I assume it must happen like this: The user does