TW_INPUT
#define TW_ANY (TW_INPUT | TW_MOUSE)
code = TW_INPUT;
if (mode & TW_INPUT) {
code = TW_INPUT;
if (mode & TW_INPUT) {
if (mode & TW_INPUT) {
if (mode & TW_INPUT) {
if ((mode & TW_INPUT)
result = TW_INPUT; /* redundant, but simple */
if ((mode & TW_INPUT)
result |= TW_INPUT;