ggiGetReadFrame

ggiSetDisplayFrame(3ggi)       LibGGI API Manual      ggiSetDisplayFrame(3ggi)



NAME
       ggiSetDisplayFrame, ggiSetWriteFrame, ggiSetReadFrame,
       ggiGetDisplayFrame, ggiGetWriteFrame, ggiGetReadFrame - Set or get the
       current frame for display, writing and reading

SYNOPSIS
       #include <ggi/ggi.h>

       int ggiSetDisplayFrame(ggi_visual_t vis, int frameno);

       int ggiSetWriteFrame(ggi_visual_t vis, int frameno);

       int ggiSetReadFrame(ggi_visual_t vis, int frameno);

       int ggiGetDisplayFrame(ggi_visual_t vis);

       int ggiGetWriteFrame(ggi_visual_t vis);

       int ggiGetReadFrame(ggi_visual_t vis); .SH "DESCRIPTION"

       These functions are used for selecting or getting the current buffers,
       when using the multiple buffering function of LibGGI.

       ggiSetDisplayFrame sets the frame that gets displayed.

       ggiSetWriteFrame sets the frame for write operations such as ggiPuts
       and ggiHLine.

       ggiSetReadFrame sets the frame for read operations, like ggiGetPixel
       and the ggiCrossBlit source.

       ggiGetDisplayFrame reports the frame currently displayed.

       ggiGetWriteFrame reports the frame currently written to.

       ggiSetReadFrame reports the frame currently read from.

       Frames are numbered from 0 to the number of frames requested - 1.

RETURN VALUE
       The ggiSet*Frame functions return 0 if they succeed, and <0 if they
       fail.

       The ggiGet*Frame functions never fail.



GGI                             12 August 1999        ggiSetDisplayFrame(3ggi)