[/code]Dim nid As NOTIFYICONDATA ' trayicon variable

'----------------------
'--- command1 click ---
'----------------------
Private Sub Command1_Click()
minimize_to_tray
End Sub

'------------------------
'--- create tray icon ---
'------------------------
Sub minimize_to_tray()
Me.Hide
nid.cbSize = Len(nid)
nid.hwnd = Me.hwnd
nid.uId = vbNull
nid.uFlags = NIF_ICON Or NIF_TIP Or NIF_MESSAGE
nid.uCallBackMessage = WM_MOUSEMOVE
nid.hIcon = Me.Icon ' the icon will be your Form1 project icon
nid.szTip = "Calvin-w" & vbNullChar
Shell_NotifyIcon NIM_ADD, nid
End Sub








'---------------------------------------------------
'-- Tray icon actions when mouse click on it, etc --
'---------------------------------------------------
Private Sub Form_MouseMove(Button As Integer, Shift As Integer, x As Single, y As Single)
Dim msg As Long
Dim sFilter As String
msg = x / Screen.TwipsPerPixelX
Select Case msg
Case WM_LBUTTONDOWN
Me.Show ' show form
Shell_NotifyIcon NIM_DELETE, nid ' del tray icon
Case WM_LBUTTONUP
Case WM_LBUTTONDBLCLK
Case WM_RBUTTONDOWN
Case WM_RBUTTONUP
Me.Show
Shell_NotifyIcon NIM_DELETE, nid
Case WM_RBUTTONDBLCLK
End Select
End Sub

'------------------------------
'--- form Actions On unload ---
'------------------------------
Private Sub Form_Unload(Cancel As Integer)
Shell_NotifyIcon NIM_DELETE, nid ' del tray icon
End Sub[code]