the name of the variable whose value is set by the combobox.
prompt
the label for the combobox.
vals
the values of variable used by the combo.
initval
the initial value of variable (optional). The initial value can also be specified in the call to rp.control.
pos
the layout instructions. Please see the rp.pos example and help for full details.
action
the function which is called when an item is chosen.
foreground
colour of the text
background
colour of the text background
font
font to be used
editable
whether the combobox can be edited or not.
parentname
this specifies the widget inside which the combobox should
appear.
name
name assigned to the combobox, used for disposing of the widget
...
...
Details
The function action should take one argument, which should be the panel to which the combobox is attached.
See rp.grid for details of the grid layout system.
Value
If the parameter panel is the panelname string the same string is returned. If the
panel object is used the altered panel is assigned to both the calling level and panel's
environment level.
Warning
The action function should return the panel. Without this assignment any widgets added or alterations made to panel parameters within the action function will be lost.
Note
Parameters parent and ... have been discontinued in version 1.1. Note that the argument previously named var has been renamed variable to avoid reserved
word issues.
References
rpanel: Simple interactive controls for R functions using the tcltk package.
Journal of Statistical Software, 17, issue 9.