Find Vgui panels by panel type

[Zyler]

When using GetName() GetClassName() or anything similar on a panel all I receive is an ambiguous "Panel" or "Label".

Is there a way to find a panel by it's panel type or derma control name, such as "DFrame" or something similar? I'm trying to use this to identify and remove parts of the spawn menu, so I may just be trying to identify something that isn't what I think it is.

Looking through the spawn menu code, all of the elements of the spawn menu use vgui elements such as "ContentIcon" and "ContentContainer". So how would I identify a panel in such a way as to return those naming schemes?

Heres what I'm basically forced to use without this solution (doesn't actually work, still WIP btw):
[lua]local testspawnmenu = vgui.Create( "SpawnMenu" )
for k, v in pairs(testspawnmenu:GetChildren()) do
for ktwo ,vtwo in pairs(v:GetChildren()) do
for kthree, vthree in pairs(vtwo:GetChildren()) do
vthree:Remove()
hook.Run("SpawnlistContentChanged", vthree)
end
end
end[/lua]

Using the above code I also get this error:

[ERROR] lua/skins/default.lua:525: Tried to use invalid object (type Panel) (Object was NULL or not of the right type)
  1. GetTall - [C]:-1
   2. unknown - lua/skins/default.lua:525

Any help with either of these problems would be much appreciated.

[Drakehawke]

panel.ClassName

[editline]28th March 2013[/editline]

The reason you're getting that error is you're using vthree in hook.Run, but you removed it on the line above.