Kontron KTAM3874-pITX - Manual (Page 153)

KTD-S0057-I Page 149 Linux® Programming Examples (DebianTM)
KTAM3874/pITX Software Guide
sys->disp
= disp;
sys->win = win;
sys->cmap = cmap;
sys->visual = visual;
sys->screen = screen;
sys->gc = gc;
sys->font = font;
sys->close = close;
return EXIT_SUCCESS;
}
static void destroy_X11_window (XSystem sys)
{
if
(sys.pict)
XFreePixmap (sys.disp, sys.pict);
if (sys.font != (XFontStruct *) NULL)
XFreeFont (sys.disp, sys.font);
if (sys.gc)
XFreeGC (sys.disp, sys.gc);
if (sys.win)
XDestroyWindow (sys.disp, sys.win);
if (sys.cmap)
XFreeColormap (sys.disp, sys.cmap);
XCloseDisplay (sys.disp);
}
int main (void)
{
int quit = 0;
XSystem xsys;
XEvent e;
cairo_t *cr;
cairo_surface_t *surface;
memset ((void *) &xsys, 0, sizeof (xsys));
if (create_X11_window (&xsys))
return EXIT_FAILURE;
surface = (cairo_surface_t *) cairo_xlib_surface_create (xsys.disp, xsys.win, xsys.visual, WIDTH, HEIGHT);
if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS)
{
fprintf (stderr, "Cannot create cairo surface\n");
destroy_X11_window (xsys);
return EXIT_FAILURE;
}