Sync on window with unknown position

char window_name[100];
long xpos, ypos, width, height;
ctrx_get_window_name(window_name);
ctrx_get_window_position(window_name, &xpos, &ypos, &width, &height);
lr_output_message("Window = %s. x= %ld, y= %ld, width= %ld, height = %ld", window_name, xpos, ypos, width, height);
ctrx_sync_on_window(window_name, ACTIVATE, xpos, ypos, width, height, "snapshot134", CTRX_LAST);