📅  最后修改于: 2023-12-03 15:09:37.793000             🧑  作者: Mango
在VB.NET或VBA中,可以通过使用Clipboard对象将文本发送到剪贴板。
在VB.NET中,可以使用Clipboard类从代码中访问系统剪贴板。这个类允许你将文本、图像以及其他格式的数据发送到剪贴板上。
下面是一段VB.NET代码,它将字符串“Hello, world!”发送到剪贴板:
Clipboard.SetText("Hello, world!")
如果你希望将剪贴板中的数据放入你的代码中,可以使用GetText方法:
Dim myText As String = Clipboard.GetText()
可以使用ContainsText方法来检查剪贴板上是否有文本:
If Clipboard.ContainsText() Then
' 剪贴板中存在文本
End If
在VBA中,也可以使用Clipboard对象将数据放入剪贴板。需要注意的是,在VBA中,访问Clipboard对象需要使用Windows API函数。
下面是在VBA中使用Clipboard API将字符串发送到剪贴板的代码:
Declare PtrSafe Function OpenClipboard Lib "user32" (ByVal hwnd As LongPtr) As LongPtr
Declare PtrSafe Function EmptyClipboard Lib "user32" () As LongPtr
Declare PtrSafe Function CloseClipboard Lib "user32" () As LongPtr
Declare PtrSafe Function SetClipboardData Lib "user32" (ByVal wFormat As LongPtr, ByVal hMem As LongPtr) As LongPtr
Declare PtrSafe Function GlobalAlloc Lib "kernel32" (ByVal wFlags As LongPtr, ByVal dwBytes As LongPtr) As LongPtr
Declare PtrSafe Function GlobalLock Lib "kernel32" (ByVal hMem As LongPtr) As LongPtr
Declare PtrSafe Function GlobalUnlock Lib "kernel32" (ByVal hMem As LongPtr) As LongPtr
Declare PtrSafe Function lstrcpy Lib "kernel32" Alias "lstrcpyW" (ByVal lpString1 As Any, ByVal lpString2 As Any) As LongPtr
Public Function SetClipboardText(ByVal text As String) As Boolean
Dim buffer() As Byte
buffer = StrConv(text, vbUnicode)
Dim hGlobalMemory As LongPtr
hGlobalMemory = GlobalAlloc(&HGMEM_MOVEABLE, UBound(buffer) + 2)
If hGlobalMemory = 0 Then Exit Function
Dim lpMemory As LongPtr
lpMemory = GlobalLock(hGlobalMemory)
If lpMemory = 0 Then
Call GlobalUnlock(hGlobalMemory)
Call GlobalFree(hGlobalMemory)
Exit Function
End If
Call lstrcpy ByVal lpMemory, buffer
Call GlobalUnlock(hGlobalMemory)
Call OpenClipboard(0&)
Call EmptyClipboard()
Call SetClipboardData(CF_UNICODETEXT, hGlobalMemory)
Call CloseClipboard()
SetClipboardText = True
End Function
你可以调用这个函数,向剪贴板中发送字符串:
SetClipboardText "Hello, world!"
类似地,可以使用GetClipboardData函数从剪贴板中获取文本:
Declare PtrSafe Function GetClipboardData Lib "user32" (ByVal wFormat As LongPtr) As LongPtr
Public Function GetClipboardText() As String
Dim hData As LongPtr
Dim lpData As LongPtr
Call OpenClipboard(0&)
hData = GetClipboardData(CF_UNICODETEXT)
lpData = GlobalLock(hData)
GetClipboardText = StrConv(lpData, vbUnicode)
Call GlobalUnlock(hData)
Call CloseClipboard
End Function
使用方式如下:
Dim myText As String
myText = GetClipboardText()