VB6 question-Determine Browser and open files

[DigiRev]

Ok, I need some assistance with VB6. I have two items that I can't seem to find information on. Here is what I am needing:

1. I need to be able to determine, through VB6 itself, what the users computer is using for its default web browser. I can do it through ASP but I can't seem to determine through VB.

2. I need to know how to determine if a file is already open or not. My program has 4 separate main programs to it. I need to be able to determine how to know if any of those 4 programs are open if at all possible.

Thanks.

BigJay

To get the default browser, use something like this. Start a new project, and replace all code in the form with this:

Option Explicit
 
Private Declare Function GetLongPathName Lib "kernel32" Alias "GetLongPathNameA" (ByVal lpszShortPath As String, ByVal lpszLongPath As String, ByVal cchBuffer As Long) As Long
 
Private Function LongPath(ByVal ShortPath As String) As String
    Dim lonRet As Long, strLong As String
    
    strLong = String$(1024, " ")
    lonRet = GetLongPathName(ShortPath, strLong, Len(strLong))
    
    If lonRet > Len(strLong) Then
        strLong = String$(lonRet + 1, " ")
        
        lonRet = GetLongPathName(ShortPath, strLong, Len(strLong))
    End If
    
    If lonRet > 0 Then
        LongPath = Left$(strLong, lonRet)
    End If
    
End Function
 
Private Function DefaultBrowser() As String
    Dim strReg As String, objReg As Object
    
    Set objReg = CreateObject("Wscript.Shell")
    strReg = objReg.regread("HKEY_CLASSES_ROOT\HTTP\shell\open\command\")
    strReg = Replace$(strReg, Chr$(34), "")
    strReg = Mid$(strReg, 1, InStr(1, strReg, ".exe", vbTextCompare) + 3)
    DefaultBrowser = strReg
End Function
 
Private Sub Form_Load()
    Dim strBrowser As String
    
    strBrowser = LongPath(DefaultBrowser)
    MsgBox strBrowser
End Sub

To find if one of your programs are open or not, you can use the FindWindow() API function. There is code for this in the CodeBank.