[RESOLVED] Has object already been set?

[aikidokid]

How can I check to see if an object has been set or not?
I have this code in my form, that relates to a class (I can post if needed), but if the object has already been set I obviously get an error.

Set oPic = New CMDIPicture

     'The Init method takes the MDI form and a standard picture object
     'as argument. Instead of LoadPicture you can pass the Picture property of
     'any PictureBox or Image control or Load an image from a resource file.
            
oPic.Init MDIMain, LoadPicture(App.Path & "\Image.jpg")

I just don't know how to check before I run this code.

[Robert123]

If oPic = Null Then

Else
--Already initialized
End If

[si_the_geek]

That will give an error if the object is not set ("object not set"), and even if it is ("...invalid assignment").

The correct method is to use "Is Nothing":

If oPic Is Nothing Then 
  Set oPic = New CMDIPicture
Else
  'already set
End If

[RhinoBull]

In addition if object variable is public it's always a good idea to destroy when form gets unloaded (form_unload or queryunload events):

If Not oPic Is Nothing Then 
  Set oPic = Nothing
End If

[aikidokid]

Thanks all, I will give this a go.