Change date per number VB6

SELECT C.COMPID, MAX(D.DELDATE) AS NDELDATE, ABS(D.DELDATE - CHOSENDATE) AS DYDIFF
FROM COMPANY C
LEFT JOIN DELIVERYSCHED D ON D.COMPID = C.COMPID
GROUP BY C.COMPID, DYDIFF
HAVING DYDIFF = 
( SELECT MIN(D2.DELDATE - CHOSENDATE)
    FROM COMPANY C2
         LEFT JOIN DELIVERYSCHED D2 ON D2.COMPID = C2.COMPID
   WHERE C2.COMPID = C.COMPID
   GROUP BY C.COMPID )
ORDER BY DYDIFF

                                              

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Private Sub Command3_Click()
    'now update the column 7 with new delivery date'
    'start at row1..'
    'check if value different'
    '  if not then update max & min'
    Dim dtCheck As Date, dtTest As Date, i As Integer, x As Integer
    Dim storeId As Long, dtEarly As Date, dtLate As Date, iRowSt As Integer, iRowEnd As Integer
    Dim iDelay As Integer
    Dim iDaysEarly As Integer, iDaysAfter As Integer
    dtCheck = DTPicker1.Value
    storeId = 0
    iRowSt = 1: iRowEnd = 0
 
    For i = 1 To Form3.msfWindows.Rows - 1 
        If storeId = Form3.msfWindows.TextMatrix(i, 0) Then
            'update edn id' 
            iRowEnd = i
        Else
            'process stats'
            If iRowSt <> 0 And iRowEnd <> 0 Then
                'have valid data'
                iDaysEarly = DateDiff("d", dtCheck, dtTest)
                iDaysAfter = DateDiff("d", dtCheck, dtLate)
                
                If iDaysAfter > iDaysEarly Then
                    iDelay = 1
                 ElseIf iDaysAfter < iDaysEarly Then
                    iDelay = -1
                 Else
                    iDelay = -1
                End If
                For x = iRowSt To iRowEnd
                    'check if date is to be missed'
                    If Form3.msfWindows.TextMatrix(x, 9) = dtCheck Then
                        'modify date'
                        Form3.msfWindows.TextMatrix(x, 7) = Format(dtCheck + iDelay, "mmm/DD/yyyy")
                    End If
                Next x
            End If
            'set next id'
            storeId = Form3.msfWindows.TextMatrix(i, 0)
            dtEarly = dtCheck: dtLate = dtCheck 

            
            iRowSt = i: iRowEnd = i
        End If
        dtTest = Form3.msfWindows.TextMatrix(i, 9)  'the date delivery planned'
        If dtTest > dtCheck And dtTest < dtLate Then
            dtLate = dtTest
        End If
        If dtTest < dtCheck And dtTest > dtEarly Then
            dtEarly = dtTest
        End If
    Next 
    'force a process for last cells'
        'process stats'
        If iRowSt <> 0 And iRowEnd <> 0 Then
            'have valid data'
            iDaysEarly = DateDiff("d", dtCheck, dtTest)
            iDaysAfter = DateDiff("d", dtCheck, dtLate)
            
            If iDaysAfter > iDaysEarly Then
                iDelay = 1
             ElseIf iDaysAfter < iDaysEarly Then
                iDelay = -1
             Else
                iDelay = -1
            End If
            For x = iRowSt To iRowEnd
                'check if date is to be missed'
                If Form3.msfWindows.TextMatrix(x, 9) = dtCheck Then
                    'modify date'
                    Form3.msfWindows.TextMatrix(x, 7) = Format(dtCheck + iDelay, "mmm/DD/yyyy")
                End If
            Next x
        End If 

    
    
End Sub

                                              

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If storeId = Form3.MSFWindows.TextMatrix(i, 0) Then

                                              

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If storeId = Form3.MSFWindows.TextMatrix(i, 1) Then

                                              

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Option Explicit
Dim daynames(7)  'make a module level declaration'
Sub AddDateColumn()
    'the action button'
    Dim dtNow, dtMon, i, test
    
    msfWindows.ColWidth(9) = -1  'reset the column back to default size'
    For i = 1 To Form3.msfWindows.Rows - 1
        test = Form3.msfWindows.TextMatrix(i, 8)
        If Form3.msfWindows.TextMatrix(i, 8) > "" Then
        
            dtNow = DateofLastDay(test)
            Form3.msfWindows.TextMatrix(i, 9) = Format(dtNow, "mmm/DD/yyyy")
        End If
    Next
End Sub 
Private Sub Command3_Click()
    'now update the column 7 with new delivery date'
    'start at row1..'
    'check if value different'
    '  if not then update max & min'
    Dim dtCheck As Date, dtTest As Date, i As Integer, x As Integer
    Dim storeId As Long, dtEarly As Date, dtLate As Date, iRowSt As Integer, iRowEnd As Integer
    Dim iDelay As Integer
    Dim iDaysEarly As Integer, iDaysAfter As Integer
    dtCheck = DTPicker1.Value
    storeId = 0
    iRowSt = 1: iRowEnd = 0
 
    For i = 1 To Form3.msfWindows.Rows - 1 
        If storeId = Form3.msfWindows.TextMatrix(i, 0) Then
            'update edn id' 
            iRowEnd = i
        Else
            'process stats'
            If iRowSt <> 0 And iRowEnd <> 0 Then
                'have valid data'
                iDaysEarly = DateDiff("d", dtCheck, dtTest)
                iDaysAfter = DateDiff("d", dtCheck, dtLate)
                
                If iDaysAfter > iDaysEarly Then
                    iDelay = 1
                 ElseIf iDaysAfter < iDaysEarly Then
                    iDelay = -1
                 Else
                    iDelay = -1
                End If
                For x = iRowSt To iRowEnd
                    'check if date is to be missed'
                    If Form3.msfWindows.TextMatrix(x, 9) = dtCheck Then
                        'modify date'
                        Form3.msfWindows.TextMatrix(x, 7) = Format(dtCheck + iDelay, "mmm/DD/yyyy")
                    End If
                Next x
            End If
            'set next id'
            storeId = Form3.msfWindows.TextMatrix(i, 0)
            dtEarly = dtCheck: dtLate = dtCheck 

            
            iRowSt = i: iRowEnd = i
        End If
        dtTest = Form3.msfWindows.TextMatrix(i, 9)  'the date delivery planned'
        If dtTest > dtCheck And dtTest < dtLate Then
            dtLate = dtTest
        End If
        If dtTest < dtCheck And dtTest > dtEarly Then
            dtEarly = dtTest
        End If
    Next 
    'force a process for last cells'
        'process stats'
        If iRowSt <> 0 And iRowEnd <> 0 Then
            'have valid data'
            iDaysEarly = DateDiff("d", dtCheck, dtTest)
            iDaysAfter = DateDiff("d", dtCheck, dtLate)
            
            If iDaysAfter > iDaysEarly Then
                iDelay = 1
             ElseIf iDaysAfter < iDaysEarly Then
                iDelay = -1
             Else
                iDelay = -1
            End If
            For x = iRowSt To iRowEnd
                'check if date is to be missed'
                If Form3.msfWindows.TextMatrix(x, 9) = dtCheck Then
                    'modify date'
                    Form3.msfWindows.TextMatrix(x, 7) = Format(dtCheck + iDelay, "mmm/DD/yyyy")
                End If
            Next x
        End If 

    
    
End Sub 
Sub Command2_Click()
    'fill Flexgrid with test data'
    Dim i
    daynames(1) = "Sun"
    daynames(2) = "Mon"
    daynames(3) = "Tues"
    daynames(4) = "Wed"
    daynames(5) = "Thur"
    daynames(6) = "Fri"
    daynames(7) = "Sat"
    
    msfWindows.Clear
    msfWindows.Rows = 1
    msfWindows.Cols = 10
    Randomize
    For i = 0 To 9
        Form3.msfWindows.TextMatrix(0, i) = i
    Next
    For i = 1 To 8
        msfWindows.AddItem Format(Rnd(1) * 3 + 1530, "####") & vbTab & Rnd(1) * 50 & vbTab & Rnd(1) * 50 & vbTab & Rnd(1) * 50 & vbTab & Rnd(1) * 50 & vbTab & Rnd(1) * 50 & vbTab & "az" & vbTab & "---" & vbTab & daynames(Rnd(1) * 7 + 0.49) & vbTab & "ZZZ"
    Next i
    
    msfWindows.ColWidth(9) = 0  'make day num invisible'
    
    AddDateColumn
    
End Sub 
Function DateofLastDay(sDayName)
    Dim x1, x2, y, i
    x1 = Weekday(Now(), vbSunday)  'what day of week is today'
    For y = 1 To 7
        If daynames(y) = sDayName Then
            'found the correct daynum'
            Exit For
        End If
    Next y
    If y > 7 Then
        MsgBox "Could not match day name"
        DateofLastDay = 0
        Exit Function
    End If
    
    x2 = DateAdd("D", y - x1, Now())  'return a date so can be formatted as desired'
    
    DateofLastDay = x2
    SortByColumn 0, msfWindows
End Function
'----------------'
'original idea from http://www.vb-helper.com/howto_sort_flexgrid.html'
'-----------------'
Private Sub msfWindows_MouseUp(Button As Integer, Shift As _
    Integer, x As Single, y As Single)
    ' If this is not row 0, do nothing.'
    If msfWindows.MouseRow <> 0 Then Exit Sub 
    ' Sort by the clicked column.'
    SortByColumn msfWindows.MouseCol, msfWindows
End Sub 
' Sort by the indicated column.'
Private Sub SortByColumn(ByVal sort_column As Integer, flgTarget As MSFlexGrid)
    ' Hide the FlexGrid.'
    Dim m_SortColumn As Integer, m_SortOrder As Integer
    
    flgTarget.Visible = False
    flgTarget.Refresh 
    ' Sort using the clicked column.'
    flgTarget.Col = sort_column
    flgTarget.ColSel = sort_column
    flgTarget.Row = 0
    flgTarget.RowSel = 0 
    ' If this is a new sort column, sort ascending.'
    ' Otherwise switch which sort order we use.'
    If m_SortColumn <> sort_column Then
        m_SortOrder = flexSortGenericAscending
    ElseIf m_SortOrder = flexSortGenericAscending Then
        m_SortOrder = flexSortGenericDescending
    Else
        m_SortOrder = flexSortGenericAscending
    End If
    flgTarget.Sort = m_SortOrder 
    ' Restore the previous sort column's name.'
    If m_SortColumn >= 0 Then
        flgTarget.TextMatrix(0, m_SortColumn) = _
            Mid$(flgTarget.TextMatrix(0, m_SortColumn), 3)
    End If 
    ' Display the new sort column's name.'
    m_SortColumn = sort_column
    If m_SortOrder = flexSortGenericAscending Then
        flgTarget.TextMatrix(0, m_SortColumn) = "> " & _
            flgTarget.TextMatrix(0, m_SortColumn)
    Else
        flgTarget.TextMatrix(0, m_SortColumn) = "< " & _
            flgTarget.TextMatrix(0, m_SortColumn)
    End If 
    ' Display the FlexGrid.'
    flgTarget.Visible = True
End Sub
                                              

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Function daynames
 'fill Flexgrid with test data'
    Dim i
    Dim daynames
    'On Error Resume Next
    daynames(1) = "Sun"
    daynames(2) = "Mon"
    daynames(3) = "Tue"
    daynames(4) = "Wed"
    daynames(5) = "Thu"
    daynames(6) = "Fri"
    daynames(7) = "Sat"
    
    MSFWindows.Clear
    MSFWindows.Rows = 1
    MSFWindows.Cols = 10
    Randomize
    For i = 0 To 9
        windows_charts.MSFWindows.TextMatrix(0, i) = i
    Next
    For i = 1 To 8
        MSFWindows.AddItem Format(Rnd(1) * 3 + 1530, "####") & vbTab & Rnd(1) * 50 & vbTab & Rnd(1) * 50 & vbTab & Rnd(1) * 50 & vbTab & Rnd(1) * 50 & vbTab & Rnd(1) * 50 & vbTab & "az" & vbTab & "---" & vbTab & daynames(Rnd(1) * 7 + 0.49) & vbTab & "ZZZ"
    Next i
    
    MSFWindows.ColWidth(9) = 0  'make day num invisible'
    
    AddDateColumn
    
End Function

                                              

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