HOWTO: Get a Short Filename from a Long Filename

• Microsoft Visual Basic Control Creation, Learning, Professional, and Enterprise Editions for Windows, version 5.0
• Microsoft Visual Basic Standard, Professional, and Enterprise Editions, 32-bit only, for Windows, version 4.0
• Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, version 6.0

SUMMARY

Under certain circumstances, it may be necessary to get the Short Filename equivalent of a file that has a Long Filename. The example below will allow you to select a file that has a Long Filename and return it's Short Filename using the GetShortPathName API Function call.

MORE INFORMATION

The following code example includes a function that will convert long filenames into their short filename equivalents and also includes a simple demonstration of the function's use.

Step-by-Step Example

1. Create a new Standard EXE project in Visual Basic. Form1 is created by default.



2. Place a CommandButton on Form1.



3. Place a Common Dialog control on the form.



4. From the Insert menu, select Module to add a single code module to the project.



5. Add the following code to Module1:




   Declare Function GetShortPathName Lib "kernel32" _
      Alias "GetShortPathNameA" (ByVal lpszLongPath As String, _
      ByVal lpszShortPath As String, ByVal cchBuffer As Long) As Long

   Public Function GetShortName(ByVal sLongFileName As String) As String
       Dim lRetVal As Long, sShortPathName As String, iLen As Integer
       'Set up buffer area for API function call return
       sShortPathName = Space(255)
       iLen = Len(sShortPathName)

       'Call the function
       lRetVal = GetShortPathName(sLongFileName, sShortPathName, iLen)
       'Strip away unwanted characters.
       GetShortName = Left(sShortPathName, lRetVal)
   End Function 

6. Add the following code to Form1:




   Private Sub Command1_Click()
     Dim msg As String
     CommonDialog1.FileName = "*.*"
     CommonDialog1.ShowOpen
     msg = "Long File Name: " & CommonDialog1.filename & vbCrLf
     msg = msg & "Short File Name: " & GetShortName(CommonDialog1.filename)
     MsgBox msg
   End Sub 

7. Run the project by pressing the F5 key. Click on the Command button to show the Open dialog box. Navigate the Open dialog box and find a file that has a Long Filename. Select the file and click OK.



8. The message box will display the Long File name along with its Short File name.

REFERENCES

For additional information, please see the following article in the Microsoft Knowledge Base:

Q154822 HOWTO: Get a Long Filename from a Short Filename

Additional query words:

Keywords : kbdocfix kbnokeyword kbVBp400 kbVBp500 kbVBp600 PrgOther
Version : WINDOWS:4.0,5.0,6.0
Platform : WINDOWS
Issue type : kbhowto