topic Re: INewLineFeedback in ArcObjects SDK Questions

INewLineFeedback

VictorAparicio — Mon, 16 Aug 2010 08:55:27 GMT

Hi!

I have to develope a tool for drawing polylines in C# for ArcGis Engine and i´m using INewLineFeedback interface. I have no problem with the start and end point, but I don´t know how to use the MoveTo method correctly in the MouseMove Event.

This is my code:

            if (m_pNewLineFeedback != null)
            {
                IPoint pPoint = pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
                m_pNewLineFeedback.MoveTo(pPoint);
            }

It draws a line when the mouse moves, but I don´t know how to remove the lines it draws before. Any ideas??

Thank you very much in advance!

Re: INewLineFeedback

NeilClemmons — Mon, 16 Aug 2010 12:48:21 GMT

If you're setting your own symbol for the tool then you'll need to set the ROP2 property to NotXorPen.

symbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen

Re: INewLineFeedback

MatthewBuchanan — Sat, 11 Dec 2021 20:29:36 GMT

Further to this question, I want to save the line feedback which I've stored in a module variable m_newlineFeedBack into a shapefile.

Can I do this?

   
Public Overrides Sub OnDblClick()
...snip...  
m_newLineFeedback.Stop()  
...snip...         
Dim feature As IFeature
feature = ftrClass.CreateFeature
feature.Shape = m_newlineFeedBack
m_newLineFeedback = Nothing
feature.Store()

Re: INewLineFeedback

VictorAparicio — Tue, 17 Aug 2010 07:57:42 GMT

If you're setting your own symbol for the tool then you'll need to set the ROP2 property to NotXorPen.

symbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen

It works perfectly.

Thank you very much for your help!

Re: INewLineFeedback

Venkata_RaoTammineni — Sat, 11 Dec 2021 20:29:39 GMT

Hi,
You can save into shapefile..Please find the below attachment dll... You need to register that dll..and shapefile should be in editable mode...

Thanks and Regards

Venkat

Further to this question, I want to save the line feedback which I've stored in a module variable m_newlineFeedBack into a shapefile.

Can I do this?
   
Public Overrides Sub OnDblClick()
...snip...  
m_newLineFeedback.Stop()  
...snip...         
Dim feature As IFeature
feature = ftrClass.CreateFeature
feature.Shape = m_newlineFeedBack
m_newLineFeedback = Nothing
feature.Store()

Re: INewLineFeedback

MatthewBuchanan — Sat, 11 Dec 2021 20:29:42 GMT

Thanks Venkat
I was able to figure out how to do it in Visual Basic 2005. (some of the code is omitted)

Dim dataset As IDataset = fLayer.FeatureClass
dataset = fLayer.FeatureClass
Dim ftrClass As IFeatureClass = dataset
' Turn the new line feedback into a shape
Dim lineGeometry As IGeometry5
' Stop the feedback and put into geometry
lineGeometry = m_newLineFeedback.Stop
If Not lineGeometry Is Nothing Then
 '' Save the digitized line in the new shapefile
 Dim feature As IFeature
 feature = ftrClass.CreateFeature
 feature.Shape = lineGeometry
 feature.Store()