在 VB6.0 中，可以使用 Windows API 函数来向 Windows 推送即时通知。具体来说，您需要使用以下函数：

1. Shell_NotifyIcon：用于在任务栏上创建一个通知区域图标，并向用户显示通知消息。
2. FlashWindowEx：用于使窗口闪烁，以吸引用户的注意力。

下面是一个示例代码片段，演示如何使用这些函数：

Private Type NOTIFYICONDATA
    cbSize As Long
    hWnd As Long
    uID As Long
    uFlags As Long
    uCallbackMessage As Long
    hIcon As Long
    szTip As String * 64
End Type

Private Declare Function Shell_NotifyIcon Lib "shell32.dll" Alias "Shell_NotifyIconA" (ByVal dwMessage As Long, pnid As NOTIFYICONDATA) As Boolean

Private Type FLASHWINFO
    cbSize As Long
    hWnd As Long
    dwFlags As Long
    uCount As Long
    dwTimeout As Long
End Type

Private Declare Function FlashWindowEx Lib "user32" (pfwi As FLASHWINFO) As Long

Private Const NIM_ADD = &H0
Private Const NIM_MODIFY = &H1
Private Const NIM_DELETE = &H2
Private Const NIF_MESSAGE = &H1
Private Const NIF_ICON = &H2
Private Const NIF_TIP = &H4
Private Const WM_USER = &H400
Private Const NIM_SETVERSION = &H4
Private Const FLASHW_STOP = 0&
Private Const FLASHW_CAPTION = &H1
Private Const FLASHW_TRAY = &H2
Private Const FLASHW_ALL = (FLASHW_CAPTION Or FLASHW_TRAY)
Private Const FLASHW_TIMER = &H4
Private Const FLASHW_TIMERNOFG = &HC

Private Sub Form_Load()
    Dim nid As NOTIFYICONDATA
    nid.cbSize = Len(nid)
    nid.hWnd = Me.hWnd
    nid.uID = 1
    nid.uFlags = NIF_ICON Or NIF_TIP Or NIF_MESSAGE
    nid.uCallbackMessage = WM_USER + 1
    nid.hIcon = Me.Icon
    nid.szTip = "Hello, World!"
    Shell_NotifyIcon NIM_ADD, nid
End Sub

Private Sub Form_Unload(Cancel As Integer)
    Dim nid As NOTIFYICONDATA
    nid.cbSize = Len(nid)
    nid.hWnd = Me.hWnd
    nid.uID = 1
    Shell_NotifyIcon NIM_DELETE, nid
End Sub

Private Sub Command1_Click()
    Dim fwi As FLASHWINFO
    fwi.cbSize = Len(fwi)
    fwi.hWnd = Me.hWnd
    fwi.dwFlags = FLASHW_ALL Or FLASHW_TIMERNOFG
    fwi.uCount = 5
    fwi.dwTimeout = 0
    FlashWindowEx fwi
End Sub

Private Sub Form_Activate()
    Me.Hide
End Sub

Private Sub Form_Resize()
    If Me.WindowState = vbMinimized Then
        Me.Hide
    End If
End Sub

这段代码将在任务栏上创建一个通知区域图标，并在用户单击该图标时显示一个弹出式菜单。单击菜单项将使窗口闪烁一些次数。您可以根据自己的需求修改代码，以满足您的具体用例。

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