adaptors_rep = XCBXvQueryAdaptorsReply(c, XCBXvQueryAdaptors(c, root_window), NULL);
if (!adaptors_rep->num_adaptors) {
fprintf(stdout, " no adaptors present.\n");
adaptors_rep = XCBXvQueryAdaptorsReply(c, XCBXvQueryAdaptors(c, root_window), NULL);
if (!adaptors_rep->num_adaptors) {
fprintf(stdout, " no adaptors present.\n");