Shuffle values to always equal another cell but allow individual cell modification.

[Strugglin Exceller]

I have a spreadsheet that is to calculate door panels. There are 4 panels on the door and they need to be sized so if the height of the door changes, they total values of the panels will never exceed the height of the door.

However, I want to be able to adjust 1, 2 or 3 of any of the panels manually and if I do, the ones I don't define will automatically be equal. Here is a picture of what i'm trying to set up. I have no formulas in any of the cells. but you can see in the picture what I'm trying to do. I would prefer this be done with formulas. However, I'm guessing VBA would be better and that's ok. Your help is very much appreciated.

 

[mumps]

Copy and paste this macro into the worksheet code module. Do the following: right click the tab name for your sheet and click 'View Code'. Paste the macro into the empty code window that opens up. Close the code window to return to your sheet. Enter a value in B4:B7 and press the ENTER key.

Private Sub Worksheet_Change(ByVal Target As Range)
    If Target.CountLarge > 1 Then Exit Sub
    If Intersect(Target, Range("B4:B7")) Is Nothing Then Exit Sub
    Application.ScreenUpdating = False
    Dim height As Long, rng As Range, cntBlanks As Long, cnt As Long, total As Long
    height = Range("B2").Value
    cntBlanks = Range("B4:B7").SpecialCells(xlCellTypeBlanks).Count
    cnt = WorksheetFunction.CountA(Range("B4:B7"))
    total = WorksheetFunction.Sum(Range("B4:B7"))
    For Each rng In Range("B4:B7")
        If rng <> "" Then
            rng.Offset(, 1) = rng
        Else
            rng.Offset(, 1) = (height - total) / cntBlanks
        End If
    Next rng
    Application.ScreenUpdating = True
End Sub

 

[mumps]

Tidied up a bit:

Private Sub Worksheet_Change(ByVal Target As Range)
    If Target.CountLarge > 1 Then Exit Sub
    If Intersect(Target, Range("B4:B7")) Is Nothing Then Exit Sub
    Application.ScreenUpdating = False
    Dim height As Long, rng As Range, cntBlanks As Long, total As Long
    height = Range("B2").Value
    cntBlanks = Range("B4:B7").SpecialCells(xlCellTypeBlanks).Count
    total = WorksheetFunction.Sum(Range("B4:B7"))
    For Each rng In Range("B4:B7")
        If rng <> "" Then
            rng.Offset(, 1) = rng
        Else
            rng.Offset(, 1) = (height - total) / cntBlanks
        End If
    Next rng
    Application.ScreenUpdating = True
End Sub

 

[Strugglin Exceller]

Copy and paste this macro into the worksheet code module. Do the following: right click the tab name for your sheet and click 'View Code'. Paste the macro into the empty code window that opens up. Close the code window to return to your sheet. Enter a value in B4:B7 and press the ENTER key.

Private Sub Worksheet_Change(ByVal Target As Range)
    If Target.CountLarge > 1 Then Exit Sub
    If Intersect(Target, Range("B4:B7")) Is Nothing Then Exit Sub
    Application.ScreenUpdating = False
    Dim height As Long, rng As Range, cntBlanks As Long, cnt As Long, total As Long
    height = Range("B2").Value
    cntBlanks = Range("B4:B7").SpecialCells(xlCellTypeBlanks).Count
    cnt = WorksheetFunction.CountA(Range("B4:B7"))
    total = WorksheetFunction.Sum(Range("B4:B7"))
    For Each rng In Range("B4:B7")
        If rng <> "" Then
            rng.Offset(, 1) = rng
        Else
            rng.Offset(, 1) = (height - total) / cntBlanks
        End If
    Next rng
    Application.ScreenUpdating = True
End Sub

This worked! thank you

 

[mumps]

You are very welcome.