NAME

DgInqOpen − Determine which group, if any, is open

SYNOPSIS

C:

DtObject DgInqOpen()

FORTRAN:

INTEGER∗4 DGQO()

DESCRIPTION

DgInqOpen finds out which group, if any, is currently open.  If a group is currently open, DgInqOpen returns its group handle.  If more than one group is open, DgInqOpen returns the handle of the most recently opened group (the active group).  Note that there can be at most one group active at any given time. 

If no group is currently open, DgInqOpen will return DcNullObject <DCNULL>. 

SEE ALSO

DgOpen(3D), DoGroup(3D), DoInLineGroup(3D)

September 02, 1992