Solved

VB.net erase line between two points

Posted on 2012-04-03
3
418 Views
Last Modified: 2012-04-03
Hi. I use the following code to draw a line between two points on a TreeView. What code would I use to clear this line

    Sub oDrawLine()

        Dim Gr As Graphics = Me.TreeView_From.CreateGraphics()
        ' Create pen.
        Dim blackPen As New Pen(Color.DarkOrange, 2)

        ' Draw line to screen.
        Gr.DrawLine(blackPen, oFrom_Point, oTo_Point)

    End Sub
0
Comment
Question by:murbro
3 Comments
 
LVL 85

Assisted Solution

by:Mike Tomlinson
Mike Tomlinson earned 250 total points
ID: 37801434
You've used CreateGraphics(), which is a temporary drawing surface.  To erase, just Refresh() the Form/TreeView.  If you are not calling that method from the Paint() event then it will be erased for you.
0
 
LVL 40

Accepted Solution

by:
Jacques Bourgeois (James Burger) earned 250 total points
ID: 37801550
Strange variable name, blackPen, for an orange line, even it is is dark orange :-)

If the line never cross anything else, simply create a DeleteLine method with the same code, but use the TreeView BackColor instead of the DarkOrange.
0
 

Author Closing Comment

by:murbro
ID: 37801939
thanks very much
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

1.0 - Introduction Converting Visual Basic 6.0 (VB6) to Visual Basic 2008+ (VB.NET). If ever there was a subject full of murkiness and bad decisions, it is this one!   The first problem seems to be that people considering this task of converting…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

680 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question