hi
i use below code to send text to message (chat) window of yahoo messenger 8.1 but it dose not send any thing
i use it to older version of Yahoo messenger (i think 7.5) and it send text very well

Code:
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Declare Function SendMessageByString Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As String) As Long
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long

Private Const WM_SETTEXT = &HC
Private Const WM_KEYDOWN = &H100
Private Const VK_RETURN = &HD

Private Sub Command1_Click()
Dim wnd, meswnd As Long
wnd = FindWindow("IMClass", vbNullString)
meswnd = FindWindowEx(wnd, 0, "YIMInputWindow", vbNullString)
SendMessageByString meswnd, WM_SETTEXT, 0, Text2.Text
butwnd = FindWindowEx(wnd, 0, "Button", vbNullString)
PostMessage meswnd, WM_KEYDOWN, VK_RETURN, 0
End Sub
can everyone resolve it ?