Converting Cells to Proper Case

Rick, your Sub ProperUpperLowerToggle() is elegant. Is there a way to add the sentence case to this code?

@Graham,

What an intriguing idea to make the subroutine itself Static as opposed to making the included variables Static instead. I have been programming in various forms of BASIC (the predecessor to VB) and VB/VBA since 1981 and it never dawned on me in all that time to make the procedure itself Static rather than its included variables. I will have to think about all the ramification about doing it that way, but thank you for posting it in the first place. As for your code that toggles between the three formatting options, here is my code modified to do that using a plain old Static variable for now ;-)

Sub ProperUpperLowerToggle()
Static X As Long
X = 1 + (X Mod 3)
Selection = Evaluate(Replace("IF(@="""","""",CHOOSE(" & X & ",PROPER(@),UPPER(@),LOWER(@)))", "@", Selection.Address))
End Sub

Another method that toggles through all 3 options - lower, proper and upper case.
Includes a step to stop the macro if the user selects an area beyond the currently used cells - for example the entire worksheet.
I have used this in Excel 2000, 2003 and 2010.
Also I have attached the macro to a button on the toolbar/ribbon for easier usage.

====================
Option Explicit

Static Sub CaseChange()

' Moves between Lower, Proper and Upper Case for selected fields.

On Error GoTo ErrorTrap

Dim item, shiftcase, inputFormula, cellnumbers, message

Application.ScreenUpdating = False 'Runs faster & stops screen flicker
Application.Calculation = xlManual
ActiveWorkbook.PrecisionAsDisplayed = False

shiftcase = shiftcase + 1
' initial value of shiftcase is zero if "first use" or
' "last used" value, due to "Static" statement in Sub title
If shiftcase > 3 Then shiftcase = 1
For Each item In Selection
If item.Row > Cells.SpecialCells(xlLastCell).Row Or item.Column > Cells.SpecialCells(xlLastCell).Column Then
'Prevent possible changes to large number of unused cells, e.g. down to row 65,536 !!
cellnumbers = "R" & Cells.SpecialCells(xlLastCell).Row & "C" & Cells.SpecialCells(xlLastCell).Column
inputFormula = cellnumbers
message = "Selection included cells beyond the last USED column and/or row, process stopped !!" & String(2, 10) & String(2, 13) & "The correct results may have been achieved, although these may not appear until AFTER you click 'OK'" & _
String(2, 10) & String(2, 13) & "However you may need to repeat the task, avoiding selection of any cells either :-" & String(2, 10) & String(2, 13) & _
"BELOW or TO THE RIGHT of the last USED cell. The last USED cell is "
message = message & _
Application.ConvertFormula(Formula:=inputFormula, _
fromReferenceStyle:=xlR1C1, toReferenceStyle:=xlA1, toAbsolute:=xlRelative) & "."
MsgBox message
GoTo ResetParameters
End If

Select Case shiftcase
Case 1
item.Value = LCase(item.Value)
Case 2
item.Value = Application.Proper(item)
Case 3
item.Value = UCase(item.Value)
End Select
Next item

ResetParameters:
Application.Calculation = xlAutomatic
ActiveWorkbook.PrecisionAsDisplayed = False
Application.ScreenUpdating = True 'Resets screen updating
Exit Sub

ErrorTrap:
If Err.Number = 13 Then Resume Next

End Sub

I just noticed on my posting for making text proper case that I left off a critical letter 's' from the word "cell" and because it is missing, it may give the reader the wrong idea about my formula. Here is the post again, but with the wording changed slightly to make it perfectly clear:

Here is a one-liner macro that will make all of the text in the selection proper case...

Sub MakeProper()
Selection = Evaluate(Replace("IF(@="""","""",PROPER(@))", "@", Selection.Address))
End Sub

And using the same structure as I did for the MakeProper macro, here is a one-liner to make all the text in the selection lower case...

Sub MakeLower()
Selection = Evaluate(Replace("IF(@="""","""",LOWER(@))", "@", Selection.Address))
End Sub

Here is one-liner macro that will also make all the text in the selected cell proper case...

Sub MakeProper()
Selection = Evaluate(Replace("IF(@="""","""",PROPER(@))", "@", Selection.Address))
End Sub