I have a vb 6 app that uses mappoint. How do I check to see if there is mappoint installed on a system so the app doesn't crash if the user doesn't have mappoint installed.

Hmmm, I thought I'd replied to this yesterday but it doesn't seem to have appeared.

Can you get at the Registry?

Another way might be to attempt to create a MapPoint.Application object, and trap it for an exception. This is how I'd be tempted to do it in C++. Does VB have exception handling, or somekind of error return?

Richard

you could probably use a try stream. Something lilke

Code:

try
create mappoint object
catch(ex as exception)
msgbox("Mappoint not installed")
end try

Thats how I'd do it in VB.net though I think VB6 has try things too

M

I do it like this.

'//Check for properly installed mappoint
Dim rk As RegistryKey
rk = Registry.CurrentUser
rk = rk.OpenSubKey("Software\Microsoft\MapPoint")

'//If properly installed
If Not rk Is Nothing Then
'Me.WindowState = FormWindowState.Minimized
Map = New frmMap
Map.Show()
Else
'//If NOT properly installed
MsgBox("Mapping feature only works if you have mappoint installed" & vbCrLf & _
"If Mappoint is installed on the machine, please run it once, before accessing this feature", _
MsgBoxStyle.Critical, "Mappoint error")
End If