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comctl32/monthcal: Reuse existing calls to get day of week.

This commit is contained in:
Nikolay Sivov 2009-10-10 21:20:26 +04:00 committed by Alexandre Julliard
parent 2906aaf605
commit a00c217ce9
1 changed files with 11 additions and 7 deletions
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18
dlls/comctl32/monthcal.c
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@ -131,10 +131,6 @@ typedef struct
WNDPROC EditWndProc; /* original Edit window procedure */
} MONTHCAL_INFO, *LPMONTHCAL_INFO;
/* Offsets of days in the week to the weekday of january 1 in a leap year */
static const int DayOfWeekTable[] = {0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4};
static const WCHAR themeClass[] = { 'S','c','r','o','l','l','b','a','r',0 };
/* empty SYSTEMTIME const */
@ -389,10 +385,18 @@ static void MONTHCAL_CopyDate(const SYSTEMTIME *from, SYSTEMTIME *to)
*/
int MONTHCAL_CalculateDayOfWeek(WORD day, WORD month, WORD year)
{
year-=(month < 3);
FILETIME ft;
SYSTEMTIME st;
return((year + year/4 - year/100 + year/400 +
DayOfWeekTable[month-1] + day ) % 7);
st.wYear = year;
st.wMonth = month;
st.wDay = day;
st.wHour = st.wMinute = st.wSecond = st.wMilliseconds = 0;
SystemTimeToFileTime(&st, &ft);
FileTimeToSystemTime(&ft, &st);
return st.wDayOfWeek;
}
/* properly updates date to point on next month */