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mi5

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Web URL hot spot on a rich text box

I have a rich text box which holds some text, including a URL (e.g. "www.yahoo.com"). Is it possible to make the mouse pointer change to a hand when the mouse is moved over this URL, and then control what happens when the user clicks on it?
Avatar of Olli083097
Olli083097

This site has an example that you might find usefull!

http://www.vbexplorer.com/VB_String_Text.asp
i wrote code for someone to do this but it assumed the url to begin with "http".  however it did function just like a hyperlink. heres a function to tell you what word you are over in a richtextbox, just check if the left three letters are "www" in your case:


'SEE WHAT WORD YOU ARE OVER IN RICHTEXTBOX CONTROL
'ADD A RICHTEXTBOX CONTROL AND A LABEL TO THE FORM
'************************************************************************
'
'FORM CODE
'
'************************************************************************

Private Const EM_CHARFROMPOS& = &HD7
Private Type POINTAPI
    X As Long
    Y As Long
End Type

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

' Return the word the mouse is over.
Public Function RichWordOver(rch As RichTextBox, X As Single, Y As Single) As String
    Dim pt As POINTAPI
    Dim pos As Integer
    Dim start_pos As Integer
    Dim end_pos As Integer
    Dim ch As String
    Dim txt As String
    Dim txtlen As Integer
    On Error Resume Next

    ' Convert the position to pixels.
    pt.X = X \ Screen.TwipsPerPixelX
    pt.Y = Y \ Screen.TwipsPerPixelY

    ' Get the character number
    pos = SendMessage(rch.hWnd, EM_CHARFROMPOS, 0&, pt)
    If pos <= 0 Then Exit Function

    ' Find the start of the word.
    txt = rch.Text
    For start_pos = pos To 1 Step -1
        ch = Mid$(rch.Text, start_pos, 1)
        ' Allow digits, letters, and underscores.
        If Not ( _
            (ch >= "0" And ch <= "9") Or _
            (ch >= "a" And ch <= "z") Or _
            (ch >= "A" And ch <= "Z") Or _
            ch = "_" _
        ) Then Exit For
    Next start_pos
    start_pos = start_pos + 1

    ' Find the end of the word.
    txtlen = Len(txt)
    For end_pos = pos To txtlen
        ch = Mid$(txt, end_pos, 1)
        ' Allow digits, letters, and underscores.
        If Not ( _
            (ch >= "0" And ch <= "9") Or _
            (ch >= "a" And ch <= "z") Or _
            (ch >= "A" And ch <= "Z") Or _
            ch = "_" _
        ) Then Exit For
    Next end_pos
    end_pos = end_pos - 1

    If start_pos <= end_pos Then _
        RichWordOver = Mid$(txt, start_pos, end_pos - start_pos + 1)
End Function

Private Sub Form_Load()
    RichTextBox1.Text = "Test this code sample to check what" & vbCrLf & _
        "word you are over inside the richtextbox control."
End Sub

Private Sub RichTextBox1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
Dim txt As String

    txt = RichWordOver(RichTextBox1, X, Y)
    If Label1.Caption <> txt Then _
        Label1.Caption = txt
End Sub
There is a very good third party rich edit control called Alltext from Bennet-Tec Information systems that will allow you to do all of what you're asking. They have a demo download at :

http://www.bennet-tec.com

Good luck!!
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AzraSound
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