vb中复制文件的方法是什么？

用API函数 SHFileOperation的方法。

以下是使用SHFileOperation删除复制移动文件的例子，可以复制文件夹

Private Type SHFILEOPSTRUCT

hwnd As Long

wFunc As Long

pFrom As String

pTo As String

fFlags As Integer

fAnyOperationsAborted As Long

hNameMappings As Long

lpszProgressTitle As String '只有在 FOF_SIMPLEPROGRESS 时用

End Type

Private Declare Function SHFileOperation Lib _

"shell32.dll" Alias "SHFileOperationA" (lpFileOp _

As SHFILEOPSTRUCT) As Long

'wFunc 常数

'FO_COPY 把 pFrom 文件拷贝到 pTo。

Const FO_COPY = &H2

'FO_DELETE 删除 pFrom 中的文件（pTo 忽略）。

Const FO_DELETE = &H3

'FO_MOVE 把 pFrom 文件移动到 pTo。

Const FO_MOVE = &H1

'fFlag 常数

'FOF_ALLOWUNDO 允许 Undo 。

Const FOF_ALLOWUNDO = &H40

'FOF_NOCONFIRMATION 不显示系统确认对话框。

Const FOF_NOCONFIRMATION = &H10

'FOF_NOCONFIRMMKDIR 不提示是否新建目录。

Const FOF_NOCONFIRMMKDIR = &H200

'FOF_SILENT 不显示进度对话框

Const FOF_SILENT = &H4

Private Sub Command1_Click()

'例子：

Dim SHFileOp As SHFILEOPSTRUCT

' 拷贝

SHFileOp.wFunc = FO_COPY

SHFileOp.pFrom = "d:\MASM611"

SHFileOp.pTo = "c:\MASM611"

SHFileOp.fFlags = FOF_NOCONFIRMMKDIR

Call SHFileOperation(SHFileOp)

End Sub

或者用命令行

shell "cmd.exe /c xcopy "+chr(34)+"C:\新建文件夹 c:\aa /q /e" +chr(34)

复制 *** 作应该是复制当前选区而不是整个文本框内容,粘贴应该是将剪帖板内容插入到当前光标所在位置,而不是将文本框原有内容彻底覆盖,另外,通常当Text1没选中文字时,要使复制按钮Command1不可用

Private Sub Command1_Click()

Clipboard.SetText Text1.SelText

End Sub

Private Sub Command2_Click()

If Len(Clipboard.GetText) Then

Text1.SelText = Clipboard.GetText

End If

End Sub

Private Sub Form_Load()

Command1.Enabled = False

End Sub

Private Sub Text1_KeyUp(KeyCode As Integer, Shift As Integer)

Command1.Enabled = Text1.SelLength >0

End Sub

Private Sub Text1_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)

If Butt Then

Command1.Enabled = Text1.SelLength >0

End If

End Sub

比如Text1的内容为abc，而当前只选中了第一个字符a

那么Text1.text表示文本框的全部内容，即abc

而Text1.SelText表示文本框中当前选中的内容，即a--selText是select text（选中文字）的缩写

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