我这里有个源程序,你可以看看:'在表单的声明区中加入以下的声明 Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As LongPrivate Const WM_CLOSE = &H10 Private Const MsgTitle As String = "Test Message"'在表单中加入一个 CommandButton 及一个 Timer 控制项,加入以下程序码: Private Sub Command1_Click() Dim nRet As Long Timer1.Interval = 5000 Timer1.Enabled = True nRet = MsgBox("若您不回应的话,5 秒后此 MsgBox 会自动关闭", 64, MsgTitle) Timer1.Enabled = False End SubPrivate Sub Timer1_Timer() Dim hWnd As Long hWnd = FindWindow(vbNullString, MsgTitle) Call SendMessage(hWnd, WM_CLOSE, 0, ByVal 0&) End Sub当 MsgBox 出现 5 秒之后,就会自动关闭了!注意:此方法是有限制的: 1、当常数设定为 VbAbortRetryIgnore 或 VbYesNo 时,无效! 2、在 Design Time 时,无效,必须 Make EXE 之后才有效!
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As LongPrivate Const WM_CLOSE = &H10
Private Const MsgTitle As String = "Test Message"'在表单中加入一个 CommandButton 及一个 Timer 控制项,加入以下程序码:
Private Sub Command1_Click()
Dim nRet As Long
Timer1.Interval = 5000
Timer1.Enabled = True
nRet = MsgBox("若您不回应的话,5 秒后此 MsgBox 会自动关闭", 64, MsgTitle)
Timer1.Enabled = False
End SubPrivate Sub Timer1_Timer()
Dim hWnd As Long
hWnd = FindWindow(vbNullString, MsgTitle)
Call SendMessage(hWnd, WM_CLOSE, 0, ByVal 0&)
End Sub当 MsgBox 出现 5 秒之后,就会自动关闭了!注意:此方法是有限制的:
1、当常数设定为 VbAbortRetryIgnore 或 VbYesNo 时,无效!
2、在 Design Time 时,无效,必须 Make EXE 之后才有效!