常用函数集农历函数

常用函数集
农历函数
原来是vb代码，重新整理为VB.NET版的，并在VS2003中编译通过

Imports System.Math

Public Class UCnCalendar

Private Structure SolarHolidayStruct
Dim Month As Integer
Dim Day As Integer
Dim Recess As Integer
Dim HolidayName As String
End Structure

Private Structure LunarHolidayStruct
Dim Month As Integer
Dim Day As Integer
Dim Recess As Integer
Dim HolidayName As String
End Structure

Private Structure WeekHolidayStruct
Dim Month As Integer
Dim WeekAtMonth As Integer
Dim WeekDay As Integer
Dim HolidayName As String
End Structure

'保持属性值的局部变量
Private mvarSolarYear As Integer'局部复制
Private mvarSolarMonth As Integer'局部复制
Private mvarSolarDay As Integer'局部复制
Private mvarLunarYear As Integer'局部复制
Private mvarLunarMonth As Integer'局部复制
Private mvarLunarDay As Integer'局部复制
Private mvarIsLeap As Boolean'局部复制

Private mvarDate As Date'内部使用标准的日期变量

'定义类内部用公用变量
Private SolarMonthObject As Object '每月最多天数

Private mvarLunarGan As Object'天干
Private mvarLunarZhi As Object'地支
Private mvarLunarAnimals As Object'生肖
Private mvarLunarTerm As Object'节气
Private mvarLunarTermInfo As Object

Private MonthName As Object'英文月名
Private LunarInfo(150) As Integer
Private LunarYearDays(150) As Integer
Private SolarHolidayInfo() As SolarHolidayStruct
Private LunarHolidayInfo() As LunarHolidayStruct
Private WeekHolidayInfo() As WeekHolidayStruct

Private nStr1 As Object
Private nStr2 As Object

Public Sub New()
'Dim tempArray As Object
Dim i As Integer
Dim b As Integer
'Dim sFtv As Object
'Dim lFtv As Object
'Dim wFtv As Object

'根据VB的位计算特点,故扩充原有的数据位,将其变成32位
Dim tempArray() As Object = { _
&H104BD8, &H104AE0, &H10A570, &H1054D5, &H10D260, &H10D950, &H116554, &H1056A0, &H109AD0, &H1055D2, _
&H104AE0, &H10A5B6, &H10A4D0, &H10D250, &H11D255, &H10B540, &H10D6A0, &H10ADA2, &H1095B0, &H114977, _
&H104970, &H10A4B0, &H10B4B5, &H106A50, &H106D40, &H11AB54, &H102B60, &H109570, &H1052F2, &H104970, _
&H106566, &H10D4A0, &H10EA50, &H106E95, &H105AD0, &H102B60, &H1186E3, &H1092E0, &H11C8D7, &H10C950, _
&H10D4A0, &H11D8A6, &H10B550, &H1056A0, &H11A5B4, &H1025D0, &H1092D0, &H10D2B2, &H10A950, &H10B557, _
&H106CA0, &H10B550, &H115355, &H104DA0, &H10A5D0, &H114573, &H1052D0, &H10A9A8, &H10E950, &H106AA0, _
&H10AEA6, &H10AB50, &H104B60, &H10AAE4, &H10A570, &H105260, &H10F263, &H10D950, &H105B57, &H1056A0, _
&H1096D0, &H104DD5, &H104AD0, &H10A4D0, &H10D4D4, &H10D250, &H10D558, &H10B540, &H10B5A0, &H1195A6, _
&H1095B0, &H1049B0, &H10A974, &H10A4B0, &H10B27A, &H106A50, &H106D40, &H10AF46, &H10AB60, &H109570, _
&H104AF5, &H104970, &H1064B0, &H1074A3, &H10EA50, &H106B58, &H1055C0, &H10AB60, &H1096D5, &H1092E0, _
&H10C960, &H10D954, &H10D4A0, &H10DA50, &H107552, &H1056A0, &H10ABB7, &H1025D0, &H1092D0, &H10CAB5, _
&H10A950, &H10B4A0, &H10BAA4, &H10AD50, &H1055D9, &H104BA0, &H10A5B0, &H115176, &H1052B0, &H10A930, _
&H107954, &H106AA0, &H10AD50, &H105B52, &H104B60, &H10A6E6, &H10A4E0, &H10D260, &H10EA65, &H10D530, _
&H105AA0, &H1076A3, &H1096D0, &H104BD7, &H104AD0, &H10A4D0, &H11D0B6, &H10D250, &H10D520, &H10DD45, _
&H10B5A0, &H1056D0, &H1055B2, &H1049B0, &H10A577, &H10A4B0, &H10AA50, &H11B255, &H106D20, &H10ADA0}

For i = 0 To 149
LunarInfo(i) = tempArray(i)
Next

tempArray = New Object() { _
384, 354, 355, 383, 354, 355, 384, 354, 355, 384, _
354, 384, 354, 354, 384, 354, 355, 384, 355, 384, _
354, 354, 384, 354, 354, 385, 354, 355, 384, 354, _
383, 354, 355, 384, 355, 354, 384, 354, 384, 354, _
354, 384, 355, 354, 385, 354, 354, 384, 354, 384, _
354, 355, 384, 354, 355, 384, 354, 383, 355, 354, _
384, 355, 354, 384, 355, 353, 384, 355, 384, 354, _
355, 384, 354, 354, 384, 354, 384, 354, 355, 384, _
355, 354, 384, 354, 384, 354, 354, 384, 355, 355, _
384, 354, 354, 383, 355, 384, 354, 355, 384, 354, _
354, 384, 354, 355, 384, 354, 385, 354, 354, 384, _
354, 354, 384, 355, 384, 354, 355, 384, 354, 354, _
384, 354, 355, 384, 354, 384, 354, 354, 384, 355, _
354, 384, 355, 384, 354, 354, 384, 354, 354, 384, _
355, 355, 384, 354, 384, 354, 354, 384, 354, 355}

For i = 0 To 149
LunarYearDays(i) = tempArray(i)
Next

SolarMonthObject = New Object() {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
mvarLunarGan = New Object() {"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"}
mvarLunarZhi = New Object() {"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"}
mvarLunarAnimals = New Object() {"鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"}
mvarLunarTerm = New Object() {"小寒", "大寒", "立春", "雨水", "惊蛰", "春分", "清明", "谷雨", "立夏", "小满", "芒种", "夏至", "小暑", "大暑", "立秋", "处暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至"}
mvarLunarTermInfo = New Object() {0, 21208, 42467, 63836, 85337, 107014, 128867, 150921, 173149, 195551, 218072, 240693, 263343, 285989, 308563, 331033, 353350, 375494, 397447, 419210, 440795, 462224, 483532, 504758}
nStr1 = New Object() {"日", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十"}
nStr2 = New Object() {"初", "十", "廿", "卅", "　"}
MonthName = New Object() {"JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SEP", "OCT", "NOV", "DEC"}

'国历节日 *表示放假日
Dim sFtv() As Object = { _
1, 1, 1, "元旦", _
2, 14, 0, "情人节", _
2, 10, 0, "国际气象节", _
3, 18, 0, "妇女节", _
3, 12, 0, "植树节", _
3, 15, 0, "消费者权益日", _
4, 1, 0, "愚人节", _
5, 1, 1, "劳动节", _
5, 4, 0, "青年节", _
5, 12, 0, "护士节", _
5, 31, 0, "世界无烟日", _
6, 1, 1, "儿童节", _
7, 1, 0, "建党节 香港回归纪念", _
8, 1, 0, "建军节", _
8, 8, 0, "中国男子节 父亲节", _
9, 9, 0, "毛泽东逝世纪念", _
9, 10, 0, "教师节", _
9, 18, 0, "九·一八事变纪念日", _
9, 28, 0, "孔子诞辰", _
10, 1, 1, "国庆节 国际音乐日", _
10, 6, 0, "老人节", _
10, 24, 0, "联合国日", _
11, 12, 0, "孙中山诞辰纪念", _
12, 1, 0, "世界艾滋病日", _
12, 3, 0, "世界残疾人日", _
12, 20, 0, "澳门回归纪念", _
12, 24, 0, "平安夜", _
12, 25, 0, "圣诞节", _
12, 26, 0, "毛泽东诞辰纪念"}

b = UBound(sFtv) + 1
ReDim SolarHolidayInfo(b / 4)
For i = 0 To (b / 4) - 1
SolarHolidayInfo(i).Month = sFtv(i * 4)
SolarHolidayInfo(i).Day = sFtv(i * 4 + 1)
SolarHolidayInfo(i).Recess = sFtv(i * 4 + 2)
SolarHolidayInfo(i).HolidayName = sFtv(i * 4 + 3)
Next

'农历节日 *表示放假日
Dim lFtv() As Object = { _
1, 1, 1, "春节 弥勒佛圣诞", _
1, 6, 0, "定光佛圣诞", _
1, 15, 1, "元宵节", _
2, 8, 0, "释迦牟尼佛出家", _
2, 9, 0, "海空上师生日", _
2, 15, 0, "释迦牟尼佛涅槃", _
2, 19, 0, "观世音菩萨圣诞", _
2, 21, 0, "普贤菩萨圣诞", _
3, 4, 0, "清海上师圆寂日", _
3, 16, 0, "准提菩萨圣诞", _
4, 4, 0, "文殊菩萨圣诞 海空上师出家", _
4, 8, 0, "释迦牟尼佛圣诞", _
4, 15, 0, "佛吉祥日", _
5, 5, 0, "端午节", _
5, 13, 0, "伽蓝菩萨圣诞", _
6, 3, 0, "护法韦驮尊天菩萨圣诞", _
6, 19, 0, "观世音菩萨成道", _
7, 7, 0, "七夕情人节", _
7, 13, 0, "大势至菩萨圣诞", _
7, 15, 0, "中秋节 盂兰盆节", _
8, 22, 0, "燃灯佛圣诞", _
7, 24, 0, "龙树菩萨圣诞", _
7, 30, 0, "地藏菩萨圣诞", _
8, 15, 0, "中秋节", _
9, 9, 0, "重阳节", _
9, 19, 0, "观世音菩萨出家纪念日", _
9, 30, 0, "药师琉璃光如来圣诞", _
10, 5, 0, "达摩祖师圣诞", _
11, 7, 0, "阿弥陀佛圣诞", _
12, 8, 0, "腊八节 释迦如来成道日", _
12, 24, 0, "小年", _
12, 29, 0, "华严菩萨圣诞"}
'12, 31, 0, "除夕") '注意除夕需要其它方法进行计算

b = UBound(lFtv) + 1
ReDim LunarHolidayInfo(b / 4)
For i = 0 To (b / 4) - 1
LunarHolidayInfo(i).Month = lFtv(i * 4)
LunarHolidayInfo(i).Day = lFtv(i * 4 + 1)
LunarHolidayInfo(i).Recess = lFtv(i * 4 + 2)
LunarHolidayInfo(i).HolidayName = lFtv(i * 4 + 3)
Next

'某月的第几个星期几
Dim wFtv() As Object = { _
5, 2, 1, "国际母亲节", _
5, 3, 1, "全国助残日", _
6, 3, 1, "父亲节", _
9, 3, 3, "国际和平日", _
9, 4, 1, "国际聋人节", _
10, 1, 2, "国际住房日", _
10, 1, 4, "国际减轻自然灾害日", _
11, 4, 5, "感恩节"}

b = UBound(wFtv) + 1
ReDim WeekHolidayInfo(b / 4)
For i = 0 To (b / 4) - 1
WeekHolidayInfo(i).Month = wFtv(i * 4)
WeekHolidayInfo(i).WeekAtMonth = wFtv(i * 4 + 1)
WeekHolidayInfo(i).WeekDay = wFtv(i * 4 + 2) '1 代表星期天
WeekHolidayInfo(i).HolidayName = wFtv(i * 4 + 3)
Next
End Sub

'/
'计算农历上的节气
ReadOnly Property LunarTerm() As String
Get
'//===== 某年的第n个节气为几日(从0小寒起算)
'function sTerm(y,n) {
' var offDate = new Date( ( 31556925974.7*(y-1900) + LunarTermInfo[n]*60000 ) + Date.UTC(1900,0,6,2,5) )
' return(offDate.getUTCDate())
'//节气
' tmp1 = sTerm(y, m * 2) - 1

Dim baseDateAndTime As Date
Dim newDate As Date
Dim num As Double
Dim y As Integer
Dim tempStr As String

baseDateAndTime = #1/6/1900 2:05:00 AM#
y = mvarSolarYear
tempStr = ""

Dim i As Integer
For i = 1 To 24
num = 525948.76 * (y - 1900) + mvarLunarTermInfo(i - 1)
newDate = DateAdd("n", num, baseDateAndTime) '按分钟计算,之所以不按秒钟计算，是因为会溢出
If Abs(DateDiff("d", newDate, mvarDate)) = 0 Then
tempStr = mvarLunarTerm(i - 1)
Exit For
End If
Next

LunarTerm = tempStr
End Get
End Property

'计算按第几周星期几计算的节日
ReadOnly Property WeekHoliday() As String
Get
Dim w As Integer
Dim i As Integer
Dim b As Integer
Dim FirstDay As Date
Dim tempStr As String

b = UBound(WeekHolidayInfo)
For i = 0 To b
If WeekHolidayInfo(i).Month = mvarSolarMonth Then '当月份相当时
w = Weekday(mvarDate)
If WeekHolidayInfo(i).WeekDay = w Then '仅当星期几也相等时
FirstDay = mvarSolarMonth & "/" & 1 & "/" & mvarSolarYear '取当月第一天
If (DateDiff("ww", FirstDay, mvarDate) = WeekHolidayInfo(i).WeekAtMonth) Then
tempStr = WeekHolidayInfo(i).HolidayName
End If
End If
End If
Next


WeekHoliday = tempStr
End Get
End Property

ReadOnly Property LunarHoliday() As String
Get
Dim i As Integer
Dim b As Integer
Dim tempStr As String
Dim oy As Integer
Dim odate As Date
Dim ndate As Date

tempStr = ""
b = UBound(LunarHolidayInfo)
If mvarLunarMonth = 12 And (mvarLunarDay = 29 Or mvarLunarDay = 30) Then

oy = mvarLunarYear '保存农历年数
odate = mvarDate
ndate = mvarDate.AddDays(1)
Call SolarInitDate(Year(ndate), Month(ndate), Microsoft.VisualBasic.DateAndTime.Day(ndate)) '计算第二天的属性
If oy = mvarLunarYear - 1 Then '如果农历年数增加了1
tempStr = "除夕"
Call SolarInitDate(Year(odate), Month(odate), Microsoft.VisualBasic.DateAndTime.Day(odate)) '恢复到今天原有数据

End If
Else
For i = 0 To b
If (LunarHolidayInfo(i).Month = mvarLunarMonth) And _
(LunarHolidayInfo(i).Day = mvarLunarDay) Then
tempStr = LunarHolidayInfo(i).HolidayName
Exit For
End If
Next
End If
LunarHoliday = tempStr
End Get
End Property

'求公历节日
ReadOnly Property SolarHoliday() As String
Get
Dim i As Integer
Dim b As Integer
Dim tempStr As String

tempStr = ""
b = UBound(SolarHolidayInfo)
For i = 0 To b
If (SolarHolidayInfo(i).Month = mvarSolarMonth) And _
(SolarHolidayInfo(i).Day = mvarSolarDay) Then
tempStr = SolarHolidayInfo(i).HolidayName
Exit For
End If
Next
SolarHoliday = tempStr
End Get
End Property

'是否是农历的闰月
ReadOnly Property IsLeap() As Boolean
Get
IsLeap = mvarIsLeap
End Get
End Property

ReadOnly Property LunarDay() As Integer
Get
LunarDay = mvarLunarDay
End Get
End Property

ReadOnly Property LunarMonth() As Integer
Get
LunarMonth = mvarLunarMonth
End Get
End Property

ReadOnly Property LunarYear() As Integer
Get
LunarYear = mvarLunarYear
End Get
End Property

ReadOnly Property SolarWeekDay() As Integer
Get
SolarWeekDay = Weekday(mvarDate)
End Get
End Property

ReadOnly Property SolarDay() As Integer
Get
SolarDay = mvarSolarDay
End Get
End Property

ReadOnly Property SolarMonth() As Integer
Get
SolarMonth = mvarSolarMonth
End Get
End Property

ReadOnly Property SolarYear() As Integer
Get
SolarYear = mvarSolarYear
End Get
End Property

'
Public Function IsToday(ByVal y As Integer, ByVal m As Integer, ByVal d As Integer) As Boolean

If (Year(Today) = y) And _
(Month(Today) = m) And _
(Microsoft.VisualBasic.DateAndTime.Day(Today) = d) Then
IsToday = True
Else
IsToday = False
End If

End Function

'根据年份不同计算当年属于什么朝代
Public Function CNEra(ByVal y As Integer) As String
Dim tempStr As String

If y < 1874 Then
tempStr = "未知"
Else
If y <= 1908 Then
tempStr = "清朝光绪"
If y = 1874 Then
tempStr = tempStr & "元年"
Else
tempStr = tempStr & CNNumber(CStr(y - 1874)) & "年"
End If
Else
If y <= 1910 Then
tempStr = "清朝宣统"
If y = 1909 Then
tempStr = tempStr & "元年"
Else
tempStr = tempStr & CNNumber(CStr(y - 1909 + 1)) & "年"
End If
Else
If y < 1949 Then
tempStr = "中华民国"
If y = 1912 Then
tempStr = tempStr & "元年"
Else
tempStr = tempStr & CNNumber(CStr(y - 1912 + 1)) & "年"
End If
Else
tempStr = "中华人民共和国成立"
If y = 1949 Then
tempStr = tempStr & "了"
Else
Select Case y
Case 2000
tempStr = "千禧年"
Case Else
tempStr = tempStr & CNNumber(CStr(y - 1949)) & "周年"
End Select
End If
End If
End If
End If
End If

CNEra = tempStr
End Function

' 传入 num 传回干支, 0=甲子
Public Function LunarGanZhi(ByVal num As Integer) As String
Dim tempStr As String
Dim i As Integer
i = (num - 1864) Mod 60 '计算干支
tempStr = mvarLunarGan(i Mod 10) & mvarLunarZhi(i Mod 12)
LunarGanZhi = tempStr
End Function

'计算年的属相字串
Public Function YearAttribute(ByVal y As Integer) As String
YearAttribute = mvarLunarAnimals((y - 1900) Mod 12)
End Function

'将数字汉化
Public Function CNNumber(ByVal Dxs As String) As String
'检测为空时
If Trim(Dxs) = "" Then
CNNumber = ""
Exit Function
End If

Dim Sw As Integer, SzUp As Integer, tempStr As String, DXStr As String
Sw = Len(Trim(Dxs))

Dim i As Integer
For i = 1 To Sw
tempStr = Right(Trim(Dxs), i)
tempStr = Left(tempStr, 1)
tempStr = Converts(tempStr)
Select Case i
Case 1
If tempStr = "零" Then
tempStr = ""
Else
tempStr = tempStr + ""
End If
Case 2
If tempStr = "零" Then
tempStr = "零"
Else
tempStr = tempStr + "十"
End If
Case 3
If tempStr = "零" Then
tempStr = "零"
Else
tempStr = tempStr + "百"
End If
Case 4
If tempStr = "零" Then
tempStr = "零"
Else
tempStr = tempStr + "千"
End If
Case 5
If tempStr = "零" Then
tempStr = "万"
Else
tempStr = tempStr + "万"
End If
Case 6
If tempStr = "零" Then
tempStr = "零"
Else
tempStr = tempStr + "十"
End If
Case 7
If tempStr = "零" Then
tempStr = "零"
Else
tempStr = tempStr + "百"
End If
Case 8
If tempStr = "零" Then
tempStr = "零"
Else
tempStr = tempStr + "千"
End If
Case 9
If tempStr = "零" Then
tempStr = "亿"
Else
tempStr = tempStr + "亿"
End If
End Select
Dim TempA As String
TempA = Left(Trim(DXStr), 1)
If tempStr = "零" Then
Select Case TempA
Case "零"
DXStr = DXStr
Case "万"
DXStr = DXStr
Case "亿"
DXStr = DXStr
Case Else
DXStr = tempStr + DXStr
End Select
Else
DXStr = tempStr + DXStr
End If
Next

CNNumber = DXStr
End Function

Private Function Converts(ByVal NumStr As String) As String
Select Case Val(NumStr)
Case 0
Converts = "零"
Case 1
Converts = "一"
Case 2
Converts = "二"
Case 3
Converts = "三"
Case 4
Converts = "四"
Case 5
Converts = "五"
Case 6
Converts = "六"
Case 7
Converts = "七"
Case 8
Converts = "八"
Case 9
Converts = "九"
End Select
End Function

'中文日期
Public Function CNDayStr(ByVal d As Integer) As String
Dim s As String
Select Case d
Case 0
s = ""
Case 10
s = "初十"
Case 20
s = "二十"
Case 30
s = "三十"
Case Else
s = nStr2(d / 10) '整数除法
s = s & nStr1(d Mod 10)
End Select
CNDayStr = s
End Function

'中文月份
Public Function CNMonthStr(ByVal d As Integer) As String
If d < 10 Then
CNMonthStr = Converts(d Mod 10)
ElseIf d = 10 Then
CNMonthStr = "十"
Else
CNMonthStr = "十" & Converts(d Mod 10)
End If
End Function

'中文年份
Public Function CNYearStr(ByVal d As Integer) As String
Dim i As Integer
CNYearStr = ""
Dim l As Integer = Len(d.ToString)

For i = 1 To l
CNYearStr &= Converts(Mid(d.ToString, i, 1))
Next
End Function

'中文星期
Public Function CNWeekDayStr()
Dim arrWeek() As Object = {"一", "日", "一", "二", "三", "四", "五", "六"}
CNWeekDayStr = "星期" & arrWeek(Weekday(mvarDate))
End Function

'计算星座归属
Public Function Constellation(ByVal m As Integer, ByVal d As Integer) As String
Dim y As Integer
Dim tempDate As Date
Dim ConstellName As String

y = 2000
tempDate = m & "/" & d & "/" & y
Select Case tempDate
Case #3/21/2000# To #4/19/2000#
ConstellName = "白羊"
Case #4/20/2000# To #5/20/2000#
ConstellName = "金牛"
Case #5/21/2000# To #6/21/2000#
ConstellName = "双子"
Case #6/22/2000# To #7/22/2000#
ConstellName = "巨蟹"
Case #7/23/2000# To #8/22/2000#
ConstellName = "狮子"
Case #8/23/2000# To #9/22/2000#
ConstellName = "处女"
Case #9/23/2000# To #10/23/2000#
ConstellName = "天秤"
Case #10/24/2000# To #11/21/2000#
ConstellName = "天蝎"
Case #11/22/2000# To #12/21/2000#
ConstellName = "射手"
Case #12/22/2000# To #12/31/2000#
ConstellName = "摩蝎"
Case #1/1/2000# To #1/19/2000#
ConstellName = "摩蝎"
Case #1/20/2000# To #2/18/2000#
ConstellName = "水瓶"
Case #2/19/2000# To #3/20/2000#
ConstellName = "双鱼"
Case Else
ConstellName = ""
End Select
Constellation = ConstellName
End Function

'/
'以下为类内部使用的一些函数
'传回农历 y年的总天数
Private Function lYearDays(ByVal y As Integer) As Integer

' Dim i As Integer
' Dim f As Integer
' Dim sumDay As Integer
' Dim info As Integer

' sumDay = 348
' i = &H8000
' info = LunarInfo(y - 1900) And &H1000FFFF '屏蔽高位,
' Do
'f = info And i
'If f <> 0 Then
'sumDay = sumDay + 1
'End If
'i = BitRight16(i, 1)
' Loop Until i < &H10
' lYearDays = sumDay + leapDays(y)

lYearDays = LunarYearDays(y - 1900) '先计算出每年的天数,并形成数组,以减少以后的运算时间
End Function

'传回农历 y年m月的总天数
Private Function lMonthDays(ByVal y As Integer, ByVal m As Integer) As Integer
If (LunarInfo(y - 1900) And &H1000FFFF) And (&H10000 >> m) Then
lMonthDays = 30
Else
lMonthDays = 29
End If
End Function

'传回农历 y年闰月的天数
Private Function leapDays(ByVal y As Integer) As Integer
If leapMonth(y) Then
If LunarInfo(y - 1900) And &H10000 Then
leapDays = 30
Else
leapDays = 29
End If
Else
leapDays = 0
End If
End Function

'传回农历 y年闰哪个月 1-12 , 没闰传回 0
Private Function leapMonth(ByVal y As Integer) As Integer
Dim i As Integer
i = LunarInfo(y - 1900) And &HF
If i > 12 Then

End If
leapMonth = i
End Function

'计算公历年月的天数
Private Function SolarDays(ByVal y As Integer, ByVal m As Integer) As Integer
Dim d As Integer

If (y Mod 4) = 0 Then '闰年
If m = 2 Then
d = 29
Else
d = SolarMonthObject(m - 1)
End If
Else
If m = 2 Then
d = 28
Else
d = SolarMonthObject(m - 1)
End If
End If

SolarDays = d
End Function

'//
'
'主要的函数,用公历年月日对日期对象进行初使化,在此函数内部完成对私有对象属性的设置
'
'//
Public Sub SolarInitDate(ByVal y As Integer, ByVal m As Integer, ByVal d As Integer)
Dim i As Integer
Dim leap As Integer
Dim Temp As Integer
Dim offset As Integer

mvarDate = New Date(y, m, d)
mvarSolarYear = y
mvarSolarMonth = m
mvarSolarDay = d

'农历日期计算部分
leap = 0
Temp = 0

offset = mvarDate.Subtract(New System.DateTime(1900, 1, 30)).Days '计算两天的基本差距

For i = 1900 To 2049
Temp = lYearDays(i) '求当年农历年天数

offset = offset - Temp
If offset < 1 Then Exit For
Next

offset = offset + Temp
mvarLunarYear = i

leap = leapMonth(i) '闰哪个月
mvarIsLeap = False
For i = 1 To 12
'闰月
If leap > 0 And i = (leap + 1) And mvarIsLeap = False Then
mvarIsLeap = True
i = i - 1
Temp = leapDays(mvarLunarYear) '计算闰月天数
Else
Temp = lMonthDays(mvarLunarYear, i) '计算非闰月天数
End If

offset = offset - Temp
If offset <= 0 Then Exit For
Next

offset = offset + Temp
mvarLunarMonth = i
mvarLunarDay = offset
End Sub

'//
'
'主要的函数,用农历年月日对日期对象进行初使化,在此函数内部完成对私有对象属性的设置
'
'//
Public Sub LunarInitDate(ByVal y As Integer, ByVal m As Integer, ByVal d As Integer, Optional ByVal LeapFlag As Boolean = False)
Dim i As Integer
Dim leap As Integer
Dim Temp As Integer
Dim offset As Integer
mvarLunarYear = y
mvarLunarMonth = m
mvarLunarDay = d

offset = 0

For i = 1900 To y - 1
Temp = LunarYearDays(i - 1900) '求当年农历年天数
offset = offset + Temp
Next

leap = leapMonth(y) '闰哪个月
If m <> leap Then
mvarIsLeap = False '当前日期并非闰月
Else
mvarIsLeap = LeapFlag '使用用户输入的是否闰月月份
End If

If (m < leap) Or (leap = 0) Then '当闰月在当前日期后
For i = 1 To m - 1
Temp = lMonthDays(y, i) '计算非闰月天数
offset = offset + Temp
Next
Else '在闰月后
If mvarIsLeap = False Then '用户要计算非闰月的月份
For i = 1 To m - 1
Temp = lMonthDays(y, i) '计算非闰月天数
offset = offset + Temp
Next
If m > leap Then
Temp = leapDays(y) '计算闰月天数
offset = offset + Temp
End If

Else '此时只有mvarisleap=ture,
For i = 1 To m
Temp = lMonthDays(y, i) '计算非闰月天数
offset = offset + Temp
Next
End If
End If

offset = offset + d '加上当月的天数
mvarDate = DateAdd("d", offset, #1/30/1900#)
mvarSolarYear = Year(mvarDate)
mvarSolarMonth = Month(mvarDate)
mvarSolarDay = Microsoft.VisualBasic.DateAndTime.Day(mvarDate)
End Sub

'本模块用于打印出1900-2049年 每年农历的天数,可以用于数组初使化
'Public Sub printf()
'Dim i As Integer, j As Integer
'Dim temp(10) As Integer
'Dim base As Integer

'base = 1900
'For i = 1 To 15
'For j = 1 To 10
'temp(j - 1) = lYearDays((i - 1) * 10 + (j - 1) + base) '求当年农历年天数
'Next
'Debug.Print CStr(temp(0)) & " , " & CStr(temp(1)) & " , " & CStr(temp(2)) & " , " & CStr(temp(3)) & " , " & CStr(temp(4)) & " , " & CStr(temp(5)) & " , " & CStr(temp(6)) & " , " & CStr(temp(7)) & " , " & CStr(temp(8)) & " , " & CStr(temp(9)) & " , " & " _ "
'Next
'End Sub


End Class