Create a Graphics Object Line that is selectable by a context menu strip

Question

0.00/5 (No votes)

See more:

I'm creating an application which the user is able to select the line he/she draw. He/She can also right click it and a context menu strip will pop out. Any Ideas?

Regards :-D

Posted 30-Aug-10 13:23pm

holyoxx

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Christian Graus · Answer 1 · 2010-08-30T13:35:00

Solution 1

The way to do this is to store the position of the line in your code, and as the mouse moves, check if it's crossing the line. If you want to draw more than one object, you'd have a collection of objects in your code, your paint method would draw them and your mouse move code would iterate over them to see if your mouse was touching one.

Posted 30-Aug-10 13:35pm

Christian Graus

Comments

holyoxx 30-Aug-10 19:39pm

That means, I need to use a separate class for the lines to make it as an object?

holyoxx · Answer 2 · 2010-08-30T14:42:00

Here I managed to do it using a hard coded rectangle.

<pre lang="cs">
        private bool selectGraph = false;
        private Rectangle myrec = new Rectangle(50, 50, 100, 100);
        private Graphics g;
        
        private void panel1_Paint(object sender, PaintEventArgs e)
        {
            g = panel1.CreateGraphics();
            SolidBrush sb = new SolidBrush(Color.Blue);
            Pen p = new Pen(Color.Blue, 5);
            g.DrawRectangle(p, myrec);
            g.FillRectangle(sb, myrec);
        }
  
        private void panel1_MouseUp(object sender, MouseEventArgs e)
        {
            Point mPT = new Point(e.X, e.Y);
            if (e.Button == MouseButtons.Left)
            {
                if (myrec.Contains(mPT))
                {
                    selectGraph = true;
                    button1.Enabled = true;
                }
                else
                {
                    selectGraph = false;
                    button1.Enabled = false;
                }
            }
            Invalidate();
        }

But what I want is a runtime draw line. :doh:

holyoxx · Answer 3 · 2010-08-30T19:22:00

Solution 3

Problem Solved. Use Microsoft VisualBasic PowerPack 3.0 :laugh:

Posted 30-Aug-10 19:22pm