NAME

pushviewport - save the current viewport, screenmask, and setdepth parameters

SPECIFICATION

C
pushviewport()

FORTRAN
subroutine pushvi

Pascal
procedure pushviewport;

DESCRIPTION

The current viewport is the top element in a stack of viewports.  The pushviewport command duplicates the current viewport and pushes it on the stack.  After pushviewport, there are two copies of the current viewport in the stack; the top one can be changed without losing the old one.  In addition, it saves the screenmask and the parameters specified by the setdepth command. 

SEE ALSO

getscrmask, popviewport, setdepth, viewport

Version 2.3  —  July 04, 1985