topic Re: Selected Object Type in Inventor Programming Forum

Selected Object Type

Anonymous — Fri, 02 Jul 2010 15:56:52 GMT

Working from the Selection (Simple) sample, how do you figure out the object type from the selected object array (oSelectedEnts)?

I've implemented the same selection mechanism in C#, but I just get an array of Objects back and have no way of determining what they are since they are returned as generic "System.__ComObject" types.

Re: Selected Object Type

Anonymous — Fri, 02 Jul 2010 16:48:01 GMT

I am not sure of the syntacs in C#, but in vb.net I do something like

If typeof JustSelectedEntity(1) is some_type then

Re: Selected Object Type

Anonymous — Fri, 02 Jul 2010 19:43:23 GMT

I was hoping for an easier way, but if this is the case my problem is I don't even know what objects to try a cast to. I'm trying to select a client feature with client graphics, so how would I know what object type that would return? So far I've tried ClientFeature and ClientFeatureDefinition and neither have worked. I would hate to have to do this kind of guess work every time I implement selection for a different object type.

Any help with this would be appreciated.

Re: Selected Object Type

Anonymous — Mon, 05 Jul 2010 23:40:17 GMT

The easiest way I have found is to set up a simple selection test in VBA and with a watch you will be able to see what type of object it is.

Re: Selected Object Type

Anonymous — Mon, 26 Jul 2010 13:14:16 GMT

In C#, the watch reports a COM object type so that doesn't help.

I ended up writing my own selection mechanism and using the mouse listeners to run it. I needed more custom selection features for the client graphics regardless.

Thanks for the input though.