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發布日期:2023-06-22瀏覽次數:504 來源:福州網站建設
在 VB6.0 中,可以使用 Windows API 函數來向 Windows 推送即時通知。具體來說,您需要使用以下函數:
Shell_NotifyIcon
:用于在任務欄上創建一個通知區域圖標,并向用戶顯示通知消息。FlashWindowEx
:用于使窗口閃爍,以吸引用戶的注意力。下面是一個示例代碼片段,演示如何使用這些函數:
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
這段代碼將在任務欄上創建一個通知區域圖標,并在用戶單擊該圖標時顯示一個彈出式菜單。單擊菜單項將使窗口閃爍一些次數。您可以根據自己的需求修改代碼,以滿足您的具體用例。
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