vb 6.0 复制文件 带进度条 源码

以下是一个使用VB 6.0编写的带有进度条的文件复制的源代码示例：

Option Explicit

Private Declare Function SHFileOperation Lib "shell32.dll" Alias "SHFileOperationA" (lpFileOp As SHFILEOPSTRUCT) As Long

Private 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

Private Sub Command1_Click()
    Dim sourcePath As String
    Dim destinationPath As String
    Dim fileOp As SHFILEOPSTRUCT
    
    ' 设置源文件和目标文件的路径
    sourcePath = "C:\SourceFolder\file.txt"
    destinationPath = "C:\DestinationFolder\file.txt"
    
    ' 设置文件操作结构体
    With fileOp
        .wFunc = 1 ' 复制操作
        .pFrom = sourcePath & vbNullChar & vbNullChar
        .pTo = destinationPath & vbNullChar & vbNullChar
        .fFlags = &H4 ' 允许撤销操作
        .fAnyOperationsAborted = False
        .hNameMappings = 0
        .lpszProgressTitle = vbNullString
    End With
    
    ' 调用SHFileOperation函数进行文件复制
    SHFileOperation fileOp
    
    ' 检查复制操作是否被用户取消
    If fileOp.fAnyOperationsAborted Then
        MsgBox "文件复制操作被取消"
    Else
        MsgBox "文件复制完成"
    End If
End Sub

这个示例使用Shell32 DLL中的SHFileOperation函数来实现文件复制操作，并通过设置文件操作结构体以及调用函数来显示进度条。源文件的路径和目标文件的路径可以根据实际需求进行更改。