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Visual Basic 提供了過時(shí)的FileCopy語句.問題是使用該函數(shù)時(shí)并不顯示文件復(fù)制對(duì)話框,也就是說,當(dāng)拷貝一個(gè)大文件時(shí),用戶看不到Windows的標(biāo)準(zhǔn)

文件復(fù)制對(duì)話框,無法從進(jìn)度條上判斷當(dāng)前復(fù)制的進(jìn)度.那么,如何做到這一點(diǎn)呢?請(qǐng)看下面:

Public Type SHFILEOPSTRUCT

hWnd As Long

wFunc As Long

pFrom As String

pTo As String

fFlags As Integer

fAnyOperationsAborted As Boolean

hNameMappings As Long

lpszProgressTitle As String

End Type

Public Declare Function SHFileOperation Lib "shell32.dll" Alias

_

"SHFileOperationA" (lpFileOp As SHFILEOPSTRUCT) As Long

Public Const FO_COPY = &H2

Public Const FOF_ALLOWUNDO = &H40

Public Sub ShellCopyFile(Source As String, Dest As String)

Dim result As Long

Dim fileop As SHFILEOPSTRUCT

With fileop

.hwnd = 0

.wFunc = FO_COPY

'The files to copy separated by Nulls and terminated by 2 nulls

.pFrom = Source & vbNullChar & vbNullChar

'or to copy all files use this line

'.pFrom = "C:\*.*" & vbNullChar & vbNullChar

'The directory or filename(s) to copy into terminated in 2 nulls

.pTo = Dest & vbNullChar & vbNullChar

.fFlags = FOF_ALLOWUNDO

End With

result = SHFileOperation(fileop)

If result ＜＞ 0 Then 'Operation failed

'Msgbox the error that occurred in the API.

MsgBox Err.LastDllError, vbCritical Or vbOKOnly

Else

If fileop.fAnyOperationsAborted ＜＞ 0 Then

MsgBox "Operation Failed", vbCritical Or vbOKOnly

End If

End If

End Sub

只需調(diào)用ShellCopyFile FileA, FileACopy