Private Const CP_UTF8 = 65001

Private Declare Function MultiByteToWideChar Lib "kernel32" (ByVal CodePage As Long, ByVal dwFlags As Long, ByVal lpMultiByteStr As Long, ByVal cchMultiByte As Long, ByVal lpWideCharStr As Long, ByVal cchWideChar As Long) As Long
Private Declare Function WideCharToMultiByte Lib "kernel32" (ByVal CodePage As Long, ByVal dwFlags As Long, ByVal lpWideCharStr As Long, ByVal cchWideChar As Long, ByVal lpMultiByteStr As Long, ByVal cchMultiByte As Long, ByVal lpDefaultChar As Long, ByVal lpUsedDefaultChar As Long) As Long

Public Function UTF8_Encode(ByVal Text As String) As String

Dim sBuffer As String
Dim lLength As Long

If Text <> "" Then
lLength = WideCharToMultiByte(CP_UTF8, 0, StrPtr(Text), -1, 0, 0, 0, 0)
sBuffer = Space$(lLength)
lLength = WideCharToMultiByte(CP_UTF8, 0, StrPtr(Text), -1, StrPtr(sBuffer), Len(sBuffer), 0, 0)
sBuffer = StrConv(sBuffer, vbUnicode)
UTF8_Encode = Left$(sBuffer, lLength - 1)
Else
UTF8_Encode = ""
End If

End Function

Private Sub Form_Load()
Debug.Print UTF8_Encode("D:\Mis documentos\Mi música")
End Sub

Private Function UTF8_Encode(ByVal sStr As String)
For l& = 1 To Len(sStr)
lChar& = AscW(Mid(sStr, l&, 1))
If lChar& < 128 Then
sUtf8$ = sUtf8$ + Mid(sStr, l&, 1)
ElseIf ((lChar& > 127) And (lChar& < 2048)) Then
sUtf8$ = sUtf8$ + Chr(((lChar& \ 64) Or 192))
sUtf8$ = sUtf8$ + Chr(((lChar& And 63) Or 128))
Else
sUtf8$ = sUtf8$ + Chr(((lChar& \ 144) Or 234))
sUtf8$ = sUtf8$ + Chr((((lChar& \ 64) And 63) Or 128))
sUtf8$ = sUtf8$ + Chr(((lChar& And 63) Or 128))
End If
Next l&
UTF8_Encode = sUtf8$
End Function

Private Sub Form_Load()
MsgBox UTF8_Encode("D:\Mis documentos\Mi música")
End Sub

Declare Function EnumChildWindows Lib "user32" (ByVal hWndParent As Long, ByVal lpEnumFunc As Long, ByVal lParam As Long) As Long
Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hWnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
Declare Function GetWindowTextLength Lib "user32" Alias "GetWindowTextLengthA" (ByVal hWnd As Long) As Long
Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hWnd As Long, ByVal Msg As Long, wParam As Any, lParam As Any) As Long
Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Const WM_LBUTTONDOWN = &H201
Private Const WM_LBUTTONUP = &H202
Dim lRetValue As Long
Dim ControlText As String


Public Function EnumChildProc(ByVal hWnd As Long, ByVal lParam As Long) As Long
    Dim sSave As String
    sSave = Space$(GetWindowTextLength(hWnd) + 1)
    GetWindowText hWnd, sSave, Len(sSave)
    sSave = Left$(sSave, Len(sSave) - 1)
    If sSave = ControlText Then
    lRetValue = PostMessage(hWnd, WM_LBUTTONDOWN, ByVal CLng(0), ByVal CLng(0))
    lRetValue = PostMessage(hWnd, WM_LBUTTONUP, ByVal CLng(0), ByVal CLng(0))
    End If
    EnumChildProc = 1
End Function


Public Function MensageClick(WindowsCaption As String, ControlCaption As String)
    Dim Handle As Long
    ControlText = ControlCaption
    Handle = FindWindow(vbNullString, WindowsCaption)
    If Handle = 0 Then Exit Function
    EnumChildWindows Handle, AddressOf EnumChildProc, ByVal 0&
    MensageClick = lRetValue
End Function

Private Sub Command1_Click()
ret = MensageClick("All rights reserved. Lab Asprise! (c) 1998-2004", "&No")
MsgBox "Mensage enviado?: " & CBool(ret)
End Sub