topic Re: How do Import Layer file symbology in ArcEngine (no GxLayer object available) in ArcObjects SDK Questions

How do Import Layer file symbology in ArcEngine (no GxLayer object available)

TimB — Tue, 17 Aug 2010 11:39:23 GMT

I am trying to import the symbology from an existing layer file and apply it to a feature class on my map. I am attempting this in ArcEngine. The example below is the only way I can find to do this, however, the GxLayer object and its interface are not available in the ArcEngine library.

Any ideas?

Public Function ImportRasterRenderer(path As String) As IRasterRenderer
Dim pGxLayer As IGxLayer
Set pGxLayer = New GxLayer
Dim pGxFile As IGxFile
Set pGxFile = pGxLayer
pGxFile.path = path

If pGxLayer.Layer Is Nothing Then
Exit Function
End If
Dim pRasterLyr As IRasterLayer
Set pRasterLyr = pGxLayer.Layer
Set ImportRasterRenderer = pRasterLyr.Renderer

End Function

Re: How do Import Layer file symbology in ArcEngine (no GxLayer object available)

NeilClemmons — Tue, 17 Aug 2010 12:05:53 GMT

Use the ILayerFile interface.

Re: How do Import Layer file symbology in ArcEngine (no GxLayer object available)

TimB — Wed, 18 Aug 2010 16:47:26 GMT

It appears that in order to use the Ilayer interface, the layer must first be loaded into the map. Am I correct?

If so, I was hoping to use the symbology from a layer 'file' that was on disk, not from an existing layer in the map.

Can I still use ILayer to do this? If so, any pointers?

Re: How do Import Layer file symbology in ArcEngine (no GxLayer object available)

NeilClemmons — Wed, 18 Aug 2010 18:27:38 GMT

ILayerFile, not ILayer.