if (hide) EnableWindow(ctl, 0);
static void hide(HWND hwnd, int hide, int minid, int maxid) {    int i;    for (i = minid; i < maxid; i++) {	HWND ctl = GetDlgItem(hwnd, i);	if (ctl) {	    ShowWindow(ctl, hide ? SW_HIDE : SW_SHOW);	}    }}