NAME
ggiOpen, ggiClose - Open and close a visual
SYNOPSIS
#include <ggi/ggi.h>
ggi_visual_t ggiOpen(const char *display, ...);
int ggiClose(ggi_visual_t vis);
DESCRIPTION
ggiOpen opens a visual. The visual is specified as a display string,
followed by NULL. If only NULL is specified, the default display
target is opened, which means first examining GGI_DISPLAY, then
invoking display-auto(7). The other arguments are for internal
purposes only, such as argptr, used to pass driver-specific, non-
textual information to the driver.
ggiClose releases and destroys an open visual. This will close X
windows, return consoles to text-mode, etc.
RETURN VALUE
ggiOpen returns the opened visual or NULL for error. The ggi_visual_t
is opaque to the programmer and should only be used through GGI
functions.
ggiClose returns 0 for OK, otherwise a ggi-error(3) code.
EXAMPLES
Open and closing default visual:
ggi_visual_t vis = ggiOpen(NULL);
if(vis==NULL) {
ggiPanic("Couldn’t open default visual!\n");
}
/* do stuff */
ggiClose(vis);
Open and closing a memory visual:
ggi_visual_t memvis = ggiOpen("display-memory", NULL);
if(memvis==NULL) {
return -1;
}
/* do stuff */
ggiClose(memvis);
SEE ALSO
display-auto(7), ggiInit(3), libggi(7)