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        vb6.0如何向windows推送即時通知

        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:

        1. 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。
        2. 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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