在日常工作中，我們希望程序有提示功能。在某個時間點或者預設值提示信息

在Windows操作系統中，我們常?？梢钥吹侥耻浖谟蚁陆亲詣訌棾鱿⒐﹨⒖奸喿x

在access中，我們也可以通過API函數來判斷系統狀態欄的位置，讓窗體在右下角任務欄向上滑動彈出

API函數：

Option Compare Database'調用API取得除任務欄外的屏幕高度Public Declare Function SystemParametersInfo Lib "user32" Alias "SystemParametersInfoA" (ByVal uAction As Long, ByVal uParam As Long, ByRef lpvParam As Any, ByVal fuWinIni As Long) As LongPublic Const SPI_GETWORKAREA = 48Public Type RECT Left As Long Top As Long Right As Long Bottom As LongEnd Type'調用API得到整個屏幕高度Private Declare Function GetSystemMetrics Lib "user32" (ByVal nIndex As Long) As LongPrivate Const SM_CXSCREEN = 0Private Const SM_CYSCREEN = 1Public Function GetSystemHeight() As Integer '取得屏幕高度 GetSystemHeight = GetSystemMetrics(SM_CYSCREEN)End FunctionPublic Function GetTaskbarHeight() As Integer '取得任務欄高度 Dim lRes As Long Dim rectVal As RECT lRes = SystemParametersInfo(SPI_GETWORKAREA, 0, rectVal, 0) GetTaskbarHeight = GetSystemMetrics(SM_CYSCREEN) - rectVal.BottomEnd Function

窗體中代碼：

Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As LongPrivate Declare Function GetDeviceCaps Lib "gdi32" (ByVal hdc As Long, ByVal nIndex As Long) As LongDim mywidth As Long, myheight As Long'設置窗口總在最前Const SWP_NOSIZE = &H1Const SWP_NOMOVE = &H2Const HWND_TOP = 0Const HWND_NOTOPMOST = -2Const HWND_BOTTOM = 1Const HWND_TOPMOST = -1Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As LongPrivate Sub Form_Load()'在任務欄中不顯示 hdc = GetDC(0) mywidth = GetDeviceCaps(hdc, 8) myheight = GetDeviceCaps(hdc, 10) DoCmd.MoveSize (mywidth * 15 - Me.WindowWidth),GetSystemHeight * 15 '窗口總在最前 SetWindowPos hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE Me.TimerInterval = 200End SubPrivate Sub Form_Timer() Dim I As Integer For I = GetSystemHeight * 15 To (myheight * 15 - Me.WindowHeight) - GetTaskbarHeight * 15 Step -1 DoCmd.MoveSize (mywidth * 15 - Me.WindowWidth), I Next I Me.TimerInterval = 0End Sub

滑出過程：

學習更多的access技巧源碼，請關注office交流網：http://www.office-cn.net

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