如何实现复制、粘贴功能

linjingdr

有谁能够给这段代码做个详细的解释吗？能给出一个简单的调用例子吗？
VBA中用API操作剪贴板

Public Const GHND = &H42
Public Const CF_TEXT = 1
Private Const CF_ANSIONLY = &H400&
Private Const CF_APPLY = &H200&
Private Const CF_BITMAP = 2
Private Const CF_DIB = 8
Private Const CF_DIF = 5
Private Const CF_DSPBITMAP = &H82
Private Const CF_DSPENHMETAFILE = &H8E
Private Const CF_DSPMETAFILEPICT = &H83
Private Const CF_DSPTEXT = &H81
Private Const CF_EFFECTS = &H100&
Private Const CF_ENABLEHOOK = &H8&
Private Const CF_ENABLETEMPLATE = &H10&
Private Const CF_ENABLETEMPLATEHANDLE = &H20&
Private Const CF_ENHMETAFILE = 14
Private Const CF_FIXEDPITCHONLY = &H4000&
Private Const CF_FORCEFONTEXIST = &H10000
Private Const CF_GDIOBJFIRST = &H300
Private Const CF_GDIOBJLAST = &H3FF
Private Const CF_HDROP = 15
Private Const CF_INITTOLOGFONTSTRUCT = &H40&
Private Const CF_LIMITSIZE = &H2000&
Private Const CF_LOCALE = 16
Private Const CF_MAX = 17
Private Const CF_METAFILEPICT = 3
Private Const CF_NOFACESEL = &H80000
Private Const CF_NOSCRIPTSEL = &H800000
Private Const CF_NOSIMULATIONS = &H1000&
Private Const CF_NOSIZESEL = &H200000
Private Const CF_NOSTYLESEL = &H100000
Private Const CF_NOVECTORFONTS = &H800&
Private Const CF_NOOEMFONTS = CF_NOVECTORFONTS
Private Const CF_NOVERTFONTS = &H1000000
Private Const CF_OEMTEXT = 7
Private Const CF_OWNERDISPLAY = &H80
Private Const CF_PALETTE = 9
Private Const CF_PENDATA = 10
Private Const CF_PRINTERFONTS = &H2
Private Const CF_PRIVATEFIRST = &H200
Private Const CF_PRIVATELAST = &H2FF
Private Const CF_RIFF = 11
Private Const CF_SCALABLEONLY = &H20000
Private Const CF_SCREENFONTS = &H1
Private Const CF_BOTH = (CF_SCREENFONTS Or CF_PRINTERFONTS)
Private Const CF_SCRIPTSONLY = CF_ANSIONLY
Private Const CF_SELECTSCRIPT. = &H400000
Private Const CF_SHOWHELP = &H4&
Private Const CF_SYLK = 4
Private Const CF_TIFF = 6
Private Const CF_TTONLY = &H40000
Private Const CF_UNICODETEXT = 13
Private Const CF_USESTYLE = &H80&
Private Const CF_WAVE = 12
Private Const CF_WYSIWYG = &H8000
Private Declare Function GlobalAlloc Lib "kernel32" (ByVal wFlags&, ByVal dwBytes As Long) As Long
Private Declare Function GlobalLock Lib "kernel32" (ByVal hMem As Long) As Long
Private Declare Function GlobalSize Lib "kernel32" (ByVal hMem As Long) As Long
Private Declare Function lstrcpy Lib "kernel32" (ByVal lpString1 As Any, ByVal lpString2 As Any) As Long
Private Declare Function lstrlen Lib "kernel32" Alias "lstrlenA" (ByVal lpString As String) As Long
Private Declare Function GlobalUnlock Lib "kernel32" (ByVal hMem As Long) As Long
Private Declare Function OpenClipboard Lib "user32" (ByVal Hwnd As Long) As Long
Private Declare Function CloseClipboard Lib "user32" () As Long
Private Declare Function GetClipboardData Lib "user32" (ByVal wFormat As Long) As Long
Private Declare Function EmptyClipboard Lib "user32" () As Long
Private Declare Function SetClipboardData Lib "user32" (ByVal wFormat As Long, ByVal hMem As Long) As Long
Public Sub ClearClipBoard()
    OpenClipboard 0&
    EmptyClipboard
    CloseClipboard
End Sub
Function ClipBoard_SetText(strCopyString As String) As Boolean
    Dim hGlobalMemory As Long
    Dim lpGlobalMemory As Long
    Dim hClipMemory As Long
    Call ClearClipBoard
    hGlobalMemory = GlobalAlloc(GHND, Round((Len(strCopyString) / 1024 + 0.5), 0) * 1024)
    lpGlobalMemory = GlobalLock(hGlobalMemory)
    lpGlobalMemory = lstrcpy(lpGlobalMemory, strCopyString)
    If GlobalUnlock(hGlobalMemory) = 0 Then
      If OpenClipboard(0&) <> 0 Then
        hClipMemory = SetClipboardData(CF_TEXT, hGlobalMemory)
        ClipBoard_SetText = CBool(CloseClipboard)
      End If
    End If
End Function
Function ClipBoard_GetText() As String
    Dim hClipMemory As Long
    Dim lpClipMemory As Long
    Dim strCBText As String
    Dim RetVal As Long
    Dim lngSize As Long
    If OpenClipboard(0&) <> 0 Then
        hClipMemory = GetClipboardData(CF_TEXT)
        If hClipMemory <> 0 Then
            lpClipMemory = GlobalLock(hClipMemory)
            If lpClipMemory <> 0 Then
                lngSize = GlobalSize(lpClipMemory)
                strCBText = Space$(lngSize)
                RetVal = lstrcpy(strCBText, lpClipMemory)
                RetVal = GlobalUnlock(hClipMemory)
                strCBText = Left(strCBText, InStr(1, strCBText, Chr$(0), 0) - 1)
            Else
                MsgBox "Could not lock memory to copy string from."
            End If
        End If
        Call CloseClipboard
    End If
    ClipBoard_GetText = strCBText
End Function
Function CopyOlePiccy(Piccy As Object)
    Dim hGlobalMemory As Long, lpGlobalMemory As Long
    Dim hClipMemory As Long, X As Long
    hGlobalMemory = GlobalAlloc(GHND, Len(Piccy) + 1)
    lpGlobalMemory = GlobalLock(hGlobalMemory)
    lpGlobalMemory = lstrcpy(lpGlobalMemory, Piccy)
    If GlobalUnlock(hGlobalMemory) <> 0 Then
        MsgBox "Could not unlock memory location. Copy aborted."
        GoTo OutOfHere2
    End If
    If OpenClipboard(0&) = 0 Then
        MsgBox "Could not open the Clipboard. Copy aborted."
        Exit Function
    End If
    X = EmptyClipboard()
    hClipMemory = SetClipboardData(CF_TEXT, hGlobalMemory)
OutOfHere2:
    If CloseClipboard() = 0 Then
        MsgBox "Could not close Clipboard."
    End If
End Function

linjingdr

Private Const CF_SELECTSCRIPT. = &H400000
这一行中的“.”可能是多余的，在ACCESS中会提示出错

todaynew

没有完全按你的思路来，以我的理解就是字符串连接的问题而已，于是乎便另建了一个主诉记录窗体。操作时，可连续在主诉字段中录入内容。当需使用常用词时，下拉组合框，找到常用字，双击之即可。

Private Sub Combo2_DblClick(Cancel As Integer)
Me.主诉.Value = Me.主诉.Value & Me.Combo2.Value
Me.主诉.SetFocus
Me.主诉.SelStart = Len(Nz(主诉, ""))
End Sub
Private Sub Form_Open(Cancel As Integer)
Me.主诉.SetFocus
Me.主诉.SelStart = Len(Nz(主诉, ""))
End Sub

如果确需打开一个常用词窗体的话，也可以用OpenArgs参数回写原窗体数据。总体说来，常用词的操作似乎并不需要用到剪贴板，也不需要那么多按钮。不应将简单问题复杂化。以上意见仅供参考。

sgrshh29

类似于点菜,在主窗体的任意文本框中的任意位置插入右边子窗体中任意文本框的字符串.不要调用剪贴板.

linjingdr

类似于点菜,在主窗体的任意文本框中的任意位置插入右边子窗体中任意文本框的字符串.不要调用剪贴板.
sgrshh29 发表于 2009-4-10 19:55

能详细说说吗？
其实我举的只是一个简单化的例子，本意是要在多个文本框中根据需要选择性的进行粘贴，所以想调用剪贴板。

sgrshh29

能详细说说吗？
其实我举的只是一个简单化的例子，本意是要在多个文本框中根据需要选择性的进行粘贴，所以想调用剪贴板。
linjingdr 发表于 2009-4-10 21:13

供你参考。

chaojianan

谢谢，学习了。

linjingdr

供你参考。
sgrshh29 发表于 2009-4-10 22:13

果然可以点菜，学到了好东东呀！

t小宝

关于复制粘贴，不必要用API，ACC中有内置命令：

    DoCmd.RunCommand acCmdCopy
    DoCmd.RunCommand acCmdPaste

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