Visual Basic for Applications/Font Utilities

Summary

This page lists VBA procedures that are mainly to do with fonts. That is to say, how VBA handles fonts.
The function GetTextPoints() finds the width of text in points. A label on a userform extends when loaded with the string. The width is then read from the control. The userform and its contents are loaded but never shown. Despite its seeming lack of elegance, this method is perhaps the simplest way of getting the fitting width for text, correct for any variation in the font. The function is useful in the precise sizing of controls for complex layouts, such as tables within text boxes.
The procedure ListAllExcelFonts() lists Excel's fonts on a worksheet. It makes use of GetTextPoints(). While listing whether or not the font is monospaced, it also makes a sample of test text in each font. It also lists the width in points for the sample text in each font. Normalizing these width figures might be more useful but it is unclear as to which font is best to represent the standard. As ever, informed comments would be useful.
The procedure FontExists() tests whether or not a font exists. It returns true in the function name if the parameter font name exists, otherwise it returns false. Run testit() to try the function.

Font Tests

The function GetTextPoints() can be used to determine whether or not a font is monospaced. Although at first sight it would appear suitable for determining the presence of kerning, the userform control used to measure the width of text does not kern the text applied to it in any case. As such, kerning will always be found to be absent. The tests, whether used visually or in an automated mode, compare the lengths of selected strings. If the strings of the first pair below are the same length, then the font is monospaced. Elsewhere, if kerning had been applied, then the strings of the second pair would be different in length.

Monospace test strings:
IIIIIIIIII
HHHHHHHHHH

Kerning test strings: for completeness only.
AAAAATTTTT
ATATATATAT

Code Module

Revisions

Sub TestGetTextPoints()
    'Run this to obtain the points width of text
    
    ' Get the net width in points for the string
    MsgBox GetTextPoints("The quick brown fox jumps over the lazy dog", "Consolas", 12, 0, 0) & _
                         " points width"
End Sub

Function GetTextPoints(sIn As String, sFontName As String, _
    nFontSize As Single, bFontBold As Boolean, _
    bFontItalic As Boolean) As Long
    'GetTextPoints returns points width of text.
    'When setting a control width, add two additional
    'space widths to these values to avoid end clipping.
    'Needs a user form called CountPoints. Form
    'is loaded and unloaded but never shown.
        
    'Monospace test: could be used here to identify monospaced fonts
    'If pair is same width then monospaced
    'IIIIIIIIII
    'HHHHHHHHHH
    
    'Kerning test pair used by printers: Wont work here since there is no kerning in userform controls.   
    'If pair are different width then there is kerning.
    'AAAAATTTTT
    'ATATATATAT

    Dim oLbl As Control
    
    Load CountPoints
    Set oLbl = CountPoints.Controls.Add("Forms.Label.1", "oLbl")

    'format the label with same fonts as sIn
    With oLbl
        .Width = 0
        .WordWrap = False
        .Visible = False
        .AutoSize = True
        .Caption = ""
        .font.SIZE = nFontSize
        .font.Name = sFontName
        .font.Bold = bFontBold
        .font.Italic = bFontItalic
    End With

    'get points for sIn
    oLbl.Caption = sIn
    GetTextPoints = oLbl.Width

    Unload CountPoints

End Function

Sub ListAllExcelFonts()
    'Lists Excel fonts as monospaced or proportional
    'with a sample of text and its width in points
    'calls GetTextPoints to measure test strings
    'needs use of Sheet1 - clears all existing
    
    Dim FontList, sht As Worksheet, i As Long
    Dim sM1 As String, sM2 As String, sFN As String
    Dim sTest As String, nSize As Single
    Dim bBold As Boolean, bItalic As Boolean
    
    'monospaced test strings
    sM1 = "IIIIIIIIII"
    sM2 = "MMMMMMMMMM"
    
    'set a suitable test string here
    sTest = "The quick brown fox jumps over the lazy dog 1234567890"
    
    'set test parameters
    nSize = 10 'ten point for all tests
    bBold = False
    bItalic = False
    
    Set sht = ThisWorkbook.Worksheets("Sheet1")
    With sht
        .Activate
        .Range("A1:Z65536").ClearContents
        .Range("A1:Z65536").ClearFormats
    End With
    
    'get reference to the font list
    Set FontList = Application.CommandBars("Formatting").FindControl(ID:=1728)
    
    On Error Resume Next
    'work loop
    For i = 1 To FontList.ListCount
        
        sFN = FontList.List(i) 'font name
        
        'print general data to sheet
        With sht
            .Cells(i, 1) = sFN                                              'name
            .Cells(i, 3) = GetTextPoints(sTest, sFN, nSize, bBold, bItalic) 'test string pts width
        End With
        
        'set fonts for sample cell
        With sht.Cells(i, 4).font
            .Name = sFN
            .SIZE = nSize
            .Italic = bItalic
            .Bold = bBold
        End With
        
        'sample string to sheet
        sht.Cells(i, 4) = sTest
        
        'monospaced  test - true if both test strings equal in length
        If GetTextPoints(sM1, sFN, nSize, bBold, bItalic) = GetTextPoints(sM2, sFN, nSize, bBold, bItalic) Then
            'the test font is monospaced
            sht.Cells(i, 2) = "Monospaced"  'mono or prop
        Else
            sht.Cells(i, 2) = "Proportional"
        End If
    Next i
        
    With sht
        .Columns.AutoFit
        .Cells(1, 1).Select
    End With

End Sub

Private Sub testit()
    ' Find whether or not a font exists
    Dim sFontName As String
    
    sFontName = "Consolas"
    
    If FontExists(sFontName) Then
        MsgBox sFontName & " exists"
    Else
        MsgBox sFontName & " does not exist"
    End If

End Sub

Public Function FontExists(FontName As String) As Boolean
    ' Returns true in function name
    ' if parameter font name exists
    
    Dim oFont As New StdFont
    
    oFont.Name = FontName
    If StrComp(FontName, oFont.Name, vbTextCompare) = 0 Then
        FontExists = True
    End If
    
End Function

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