An application sends a ZGM_GETDOWLONG message to get 3-character abbreviated name of the weekday of the day of the week value specified in wParam.
ZGM_GETDOWSHORT wParam = (WPARAM) (int) iDayOfWeek; //day of week value lParam = (LPARAM) lpszString; //pointer to string to return the weekday name
The string must be previously allocated and have a minimum length of 4 characters. Failure to preallocate this string will result in undefined behavior, possibly resulting in data loss and/or program crash.
This message returns TRUE if the value in wParam is a valid day of the week value in the range of [0..6], otherwise the message returns FALSE.