CalculateStrokes generates a COM exception

[serge2go]

Hi,

Here is my C# code:

private void Button1Definition_OnExecute(NameValueMap context)
{
try
{
// get current document
PartDocument oCurrentDoc = m_inventorApplication.ActiveDocument as PartDocument;
PartComponentDefinition oCompDef = oCurrentDoc.ComponentDefinition;

SurfaceBody body = oCompDef.SurfaceBodies[1];
if (body == null)
return;

int VertexCount, SegmentCount;
int[] VertexIndices;
double[] VertexCoordinates;

double v = body.get_Volume(90); // <---- returns fine
body.CalculateStrokes(.1, out VertexCount, out SegmentCount, out VertexCoordinates, out VertexIndices);

}
catch (Exception e)
{
System.Windows.Forms.MessageBox.Show(e.ToString());
}

}

The line:

body.CalculateStrokes(.1, out VertexCount, out SegmentCount, out VertexCoordinates, out VertexIndices);

ALWAYS generates a COMException 0x80020005 (Type mismatch). I am trying to figure out if my paramaters are wrong... Any help is greately appreciated.

Thank you.

-Serge

[serge2go]

I updated my copy of winodw 7 with all system updated (optional or not). I went ton Autodesk's website and dwonloaded Inventor 2013 SP2, installed it, no luck. I would really appreciate if someone would maybe take a lo look at the project.... If it is not something obvious with the code, then maybe the project settings??? But then again, I used the project wizzard with no specai modifications... Ayways, please let me know if I can provide you need more information.

[Vladimir.Ananyev · Accepted solution]

Please use initialized arrays:

int VertexCount;
int SegmentCount;
int[] VertexIndices = {};
double[] VertexCoordinates = {};
 
body.CalculateStrokes(.1, 
       out VertexCount, 
       out SegmentCount, 
       out VertexCoordinates, 
       out VertexIndices);

 This works for me.

[serge2go]

Wesome, that did it. Thank you.