RichTextBox - Highlight / Bold all occurances of a word

[Static]

Private Sub ColorWord(prtbName As RichTextBox, _
            pstrWord As String, _
            plngHighlightColor As Long, _
            Optional pblnBold As Boolean)
            
Dim lngPos As Long
Dim lngSelStart As Long
Dim lngSelLength As Long
 
lngSelStart = prtbName.SelStart
lngSelLength = prtbName.SelLength
 
lngPos = prtbName.Find(pstrWord, 0)
 
Do
     
    prtbName.SelColor = plngHighlightColor
    
    If pblnBold = True Then
        prtbName.SelBold = True
    End If
    
    lngPos = prtbName.Find(pstrWord, lngPos + prtbName.SelLength)
 
Loop While lngPos > 0
 
prtbName.SelStart = lngSelStart
prtbName.SelLength = lngSelLength
 
End Sub

usage

ColorWord RichTextBoxControl , "Word to Find", color ,[Optional BOLD as Boolean]

[Hack]

For a bit more flexibility when using the routine, add a checkbox to the form (call it chkBold) and a CommonDialog control. Then, use this to call the word coloring.

Private Sub Command1_Click()
CommonDialog1.ShowColor
If chkBold.Value = vbChecked Then
   ColorWord RichTextBox1, Text1.Text, CommonDialog1.Color, True
Else
   ColorWord RichTextBox1, Text1.Text, CommonDialog1.Color
End If
End Sub

This permits you to choose the color you wish to use when highlighting the word and to decide whether or not you want the word to be bolded after highlighting or not.