scroll-if-not-visible-p simple-pane
(setf scroll-if-not-visible-p) value simple-pane
The generic function
scroll-if-not-visible-p
accesses the
scroll-if-not-visible-p
attribute of a pane.
The value of this attribute has these meanings:
When pane is given the input focus, and it is not fully visible, and its parent can be scrolled to make the pane visible, then the parent is scrolled automatically. This is the default value.
Never scroll the parent to make a pane visible.
Like
t
, except that it does not scroll when the focus is given as a result of a mouse click in
pane
.
scroll-if-not-visible-p
is called by CAPI each time it may need to scroll the parent. The method on simple-pane returns a value that is kept internally, and can be set by the default setf method.
You can specialize
scroll-if-not-visible-p
on your classes, but note that it is called often when the user clicks on any pane, so it must be reasonably fast.
The setter sets the
scroll-if-not-visible-p
attribute. It is called when the initarg
:scroll-if-not-visible-p
is used in making a simple-pane (or a subclass) instance, and can be called by your program.
value
must be
t
,
nil
or
:non-mouse
.
The method on simple-pane sets the internal value that is used by
scroll-if-not-visible-p
on simple-pane.