This function is used to create the top-level base widget for any auto-managed ENVI Classic widget. The function returns the widget ID of the newly created base.
An alternative is to use the WIDGET_ID property to ENVI along with the WIDGET_BASE routine in IDL.
Syntax
Result = WIDGET_AUTO_BASE([, GROUP=widget ID] [, TITLE=string] [, /XBIG] [, /YBIG])
Keywords
GROUP (optional)
Use this keyword to specify the ID of an existing widget that serves as “group leader” for the newly created widget. When a group leader is killed, for any reason, all widgets in the group are also destroyed. A given widget can be in more than one group. It is not possible to remove a widget from an existing group.
TITLE (optional)
Use this optional string keyword to specify a title for the top-level widget.
XBIG (optional)
Set this keyword if the widget will be large in the horizontal direction.
YBIG (optional)
Set this keyword if the widget will be large in the vertical direction.
Example
This routine is an example of how to select multiple ROIs using a compound widget.
PRO ROI_MULTI_SEL
envi_select, title='Input Filename', fid=fid
if (fid eq -1) then return
roi_ids = envi_get_roi_ids(fid=fid, roi_names=roi_names)
if (roi_ids[0] eq -1) then begin
print, 'No regions associated with the selected file'
return
endif
base = widget_auto_base(title='ROI Selection')
wm = widget_multi(base, list=roi_names, uvalue='list', /auto)
result = auto_wid_mng(base)
if (result.accept eq 0) then return
ptr = where(result.list eq 1)
print, roi_names[ptr]
print, roi_ids[ptr]
END
API Version
4.2