1、新建立一个VB6工程，将Form1的ShowInTaskBar属性设置为False
2、菜单：工程--添加模块 按“打开”这样就添加了一个新模块，名为Module1,保存为Module1.bas
3、在Module1中写下如下代码：
Option Explicit
Public Const MAX_TOOLTIP As Integer = 64
Public Const NIF_ICON = &.H2
Public Const NIF_MESSAGE = &.H1
Public Const NIF_TIP = &.H4
Public Const NIM_ADD = &.H0
Public Const NIM_DELETE = &.H2
Public Const WM_MOUSEMOVE = &.H200
Public Const WM_LBUTTONDOWN = &.H201
Public Const WM_LBUTTONUP = &.H202
Public Const WM_LBUTTONDBLCLK = &.H203
Public Const WM_RBUTTONDOWN = &.H204
Public Const WM_RBUTTONUP = &.H205
Public Const WM_RBUTTONDBLCLK = &.H206
Public Const SW_RESTORE = 9
Public Const SW_HIDE = 0
Public nfIconData As NOTIFYICONDATA
Public Type NOTIFYICONDATA
cbSize As Long
hWnd As Long
uID As Long
uFlags As Long
uCallbackMessage As Long
hIcon As Long
szTip As String * MAX_TOOLTIP
End Type
Public Declare Function ShowWindow Lib "user32" (ByVal hWnd As Long, ByVal nCmdShow As Long) As Long
Public Declare Function Shell_NotifyIcon Lib "shell32.dll" Alias "Shell_NotifyIconA" (ByVal dwMessage As Long, lpData As NOTIFYICONDATA) As Long