Display Line numbers in Richtextbox

[jjferreira]

Dear, all I have been trying to display the line numbers in a richtextbox, but up to know without any success, can you help.

Many thanks

[HeSaidJoe]

<code.Serge posted this some time back.

'adding line numbrs to the front of text in a rich text box

Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function SendMessageStr Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As String) As Long
Private Const EM_GETLINE = &HC4
Private Const EM_GETLINECOUNT = &HBA
Private Const EM_LINEINDEX = &HBB
Private Const EM_LINELENGTH = &HC1

Private Sub Command1_Click()
Dim lngCount As Long
Dim lngLineIndex As Long
Dim lngLength As Long
Dim strBuffer As String
Dim strRichText As String
Dim i As Integer

'Get Line count
lngCount = SendMessage(RichTextBox1.hwnd, EM_GETLINECOUNT, 0, 0)

With RichTextBox1
For i = 0 To lngCount - 1
'Get line index
lngLineIndex = SendMessage(.hwnd, EM_LINEINDEX, i, 0)
'get line length
lngLength = SendMessage(.hwnd, EM_LINELENGTH, lngLineIndex, 0)
'resize buffer
strBuffer = Space(lngLength)
'get line text
Call SendMessageStr(.hwnd, EM_GETLINE, i, ByVal strBuffer)
'Number each line
strRichText = strRichText & CStr(i + 1) & " " & strBuffer & vbCrLf
Next
'rewrite numbered text in RichTextBox
.Text = strRichText
End With

End Sub

Private Sub Form_Load()
With RichTextBox1
.Text = "line one" & vbCrLf
.Text = .Text & "line two" & vbCrLf
.Text = .Text & "line three"
End With
End Sub
[/code]