| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
Arguments: combo-box-column-mixin
Returns true or nil
to
indicate whether the argument, which must be an instance of grid-column
and of the
mixin class combo-box-column-mixin
, uses a
standard combo-box
control to show its
drop-down list of choices, rather than using whatever simulation of a
combo-box control is used by default (the default is nil
).
This provides a choice for alternative styles for grid-widget
combo-box cells, and an application may use whichever one is more
suitable for it. This property may be set either by calling the
setf of this function or by
passing the :use-real-combo-box
initarg to make-instance.
In the current Windows implementation, the default value of nil
causes a pop-up menu to be used. The menu will
always be as wide as needed in order to display the complete string
for each choice. A value of true causes a Windows
combo-box
to
be used instead. The combo-box will always be just as wide as the
grid-column is, and therefore may clip some of the choice strings.
The combo-box may be closed by pressing alt-uparrow, as with a
standalone combo-box
control. Alt-downarrow
may be used to open either type, as an alternative to pressing either
the spacebar or the return key. The two styles have different
borders.
Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |