_PASSIVE, MSG_VIS_REMOVE_BUTTON_POST_PASSIVE</PRE>
<P>
The type of mouse grab described in the previous section is also known as an &quot;active&quot; mouse grab. An object can also have two other types of mouse grabs: <EM>
pre-passive</EM>
 and <EM>
post-passive</EM>
. While only one object may have the active mouse grab at any given time, any number of objects may have pre- or post-passive grabs on the mouse.</P>
<P>
An object with a pre-passive mouse grab receives a copy of the input event before the eve