将图片以string读出来然后存入新的文件，新文件是损坏的，求解？该如何解决

将图片以string读出来然后存入新的文件，新文件是损坏的，求解？
Private Sub Command1_Click()
writeFile (GetFile("c:/3.txt"))
End Sub
Function GetFile(strFileName As String) As String
  Dim strFile As String
  nFile = FreeFile
  Open strFileName For Binary As #nFile
  strFile = String(LOF(nFile), " ")
  Get #nFile, , strFile
  Close #nFile
  GetFile = strFile
End Function
Function writeFile(aPostBody As String)
 Open "c:\4.txt" For Binary As #1
  Put #1, , aPostBody
 Close #1
End Function


[解决办法]
方法错误,应该改成这样:

VB code

option ExplicitFunction GetFile(ByVal strFileName As String) As String  Dim strFile As String, bFile() As Byte  Dim nFile As Long  nFile = FreeFile  Open strFileName For Binary As #nFile  ReDim bFile(LOF(nFile) - 1)  Get #nFile, , bFile  strFile = StrConv(bFile, vbUnicode)  Debug.Print strFile  Close #nFile  GetFile = strFileEnd FunctionFunction writeFile(ByVal aPostBody As String) Open "c:\4.txt" For Binary As #1  Put #1, , aPostBody Close #1End FunctionPrivate Sub Command1_Click()    writeFile (GetFile("c:/13-1.log"))End Sub
[解决办法]
告诉你一个不幸的消息，下面这一堆程序等同于VB的FileCopy。  
VB code
Option ExplicitFunction GetFile(ByVal strFileName As String) As Byte()  Dim strFile As String  Dim nFile As Long  nFile = FreeFile  Open strFileName For Binary As #nFile  ReDim GetFile(LOF(nFile) - 1)  Get #nFile, , GetFile  Debug.Print strFile  Close #nFileEnd FunctionFunction writeFile(ByRef aPostBody() As Byte) Open "c:\4.jpg" For Binary As #1  Put #1, , aPostBody Close #1End FunctionPrivate Sub Command1_Click()    writeFile GetFile("C:\3.jpg")End Sub
[解决办法]
探讨


告诉你一个不幸的消息，下面这一堆程序等同于VB的FileCopy。 
VB code
Option Explicit

Function GetFile(ByVal strFileName As String) As Byte()
  Dim strFile As String
  Dim nFile As Long
  nFile = FreeFile
  Open strFileName……