Get Default Program By Extension VB6

Berikut ini adalah cara menampilkan nama program default untuk membuka suatu file berdasarkan ekstensinya di visual basic 6, untuk mempraktekannya siapkan :

1. Buat 1 Project baru dengan 1 Form, 1 Module, dan 1 ComboBox.
2. Copy-kan coding berikut ke editor form & module yang bertalian.

          '--- Coding ini di Module...
          Declare Function FindExecutable Lib _
              "shell32.dll" Alias "FindExecutableA" _
              (ByVal lpFile As String, ByVal lpDirectory _
              As String, ByVal lpResult As String) As Long

          Declare Function GetTempFileName Lib _
              "kernel32" Alias "GetTempFileNameA" (ByVal _
              lpszPath As String, ByVal lpPrefixString _
              As String, ByVal wUnique As Long, ByVal _
              lpTempFileName As String) As Long


          Declare Function GetTempPath Lib _
              "kernel32" Alias "GetTempPathA" (ByVal _
              nBufferLength As Long, ByVal lpBuffer As _
              String) As Long

          '--- Akhir coding di Module...

          '--- Coding ini di Form...
          Public Function GetAssociatedProgram(ByVal _

              Extension As String) As String
              Dim Path As String
              Dim FileName As String
              Dim nRet As Long
              Const MAX_PATH As Long = 260  

              'Buat sebuah file temporal
              Path = String$(MAX_PATH, 0)   
              If GetTempPath(MAX_PATH, Path) Then
                  FileName = String$(MAX_PATH, 0)   

                  If GetTempFileName(Path, "~", 0, FileName) Then
                      FileName = Left$(FileName, _
                          InStr(FileName, vbNullChar) - 1)       
                      'Rename file untuk menambahkan ekstensi

                      Name FileName As Left$(FileName, _
                          InStr(FileName, ".")) & Extension
                          FileName = Left$(FileName, _
                          InStr(FileName, ".")) & Extension       
                      'Ambil assosiasi ekstensi EXE

                      Path = String$(MAX_PATH, 0)       
                      Call FindExecutable(FileName, _
                          vbNullString, Path)
                      GetAssociatedProgram = Left$( _

                          Path, InStr(Path, vbNullChar) - 1)       
                      'Hapus file temporal
                      Kill FileName       
                  End If

              End If
          End Function

          Private Sub Command1_Click()
              MsgBox GetAssociatedProgram(Combo1.Text)

          End Sub

          Private Sub Form_Load()
            With Combo1
              .AddItem "TXT"
              .AddItem "DOC"
              .AddItem "XLS"
              .AddItem "JPG"
              .AddItem "BMP"
              .AddItem "GIF"
              .AddItem "DAT"
              .AddItem "MP3"
              .Text = "TXT"

            End With
          End Sub
          '--- Akhir coding di Form...

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