INewLineFeedback

[VictorAparicio]

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!

[NeilClemmons]

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

[MatthewBuchanan]

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()

[VictorAparicio]

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!

[Venkata_RaoTammineni]

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()

[MatthewBuchanan]

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()