GM_GRFSETVMODE
error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
case GM_GRFSETVMODE:
case GM_GRFSETVMODE:
case GM_GRFSETVMODE:
case GM_GRFSETVMODE:
case GM_GRFSETVMODE:
case GM_GRFSETVMODE:
case GM_GRFSETVMODE:
error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
error = (*gp->g_sw->gd_mode)(gp, GM_GRFSETVMODE, data);
case GM_GRFSETVMODE:
case GM_GRFSETVMODE: