DISPLAY-SUB(B)        LibGGI Reference       DISPLAY-SUB(B)



NAME
       display-sub  - Make a child visual that is a window to the
       parent

DESCRIPTION
       Creates a `child' visual within a "parent".  This  can  be
       thought  of as a window and the sub target is intended for
       simple windowing systems.

       No textual  arguments.  argptr  must  contain  the  parent
       visual.

       The sub target behaves a bit special with respect to (i.e.
       abuses the semantics of :) the ggiSetMode  call.  It  uses
       the "visible" size for the top left corner position of the
       window within the visual, and the "virtual" size for  win-
       dow  width and height. Note, that moving/resizing the win-
       dow does not cause any drawing action. You have to perform
       those yourself. All it does for you is providing a virtual
       visual within an existing  one,  which  is  convenient  to
       allow  for window system canvases to be about any GGI pro-
       gram.

FEATURES
       DirectBuffer not supported.

       Accelerated to the point of the parent. Calls  are  mapped
       through with modified clipping and coordinates.



GGI                       22 August 2001        DISPLAY-SUB(B)