VB Code:
Option Explicit
Private Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" _
(ByVal hwnd As Long, ByVal lpszOp As String, _
ByVal lpszFile As String, ByVal lpszParams As String, _
ByVal LpszDir As String, ByVal FsShowCmd As Long) _
As Long
Private Sub Command2_Click()
'Open a document
Dim l As Long
l = ShellExecute(Me.hwnd, "Open", App.Path & "\Test.pdf", "", "C:\", vbNormalFocus)
End Sub