private void Form1_MouseClick(object sender, MouseEventArgs e) //mouseclick event handler
{
if (e.Button == MouseButtons.Left) //if left button is pushed
{
PointValues p = new PointValues(e.X, e.Y, false); //create and add coordinates to an array list
this.coordinates.Add(p);
this.Invalidate();
}
if (e.Button == MouseButtons.Right) //right button pushed
{
bool in_circle = false;
int total = coordinates.Count;
int index = total - 1;
for (int i = index; i >= 0; i--)
{
PointValues p = (PointValues)coordinates[i];
if ((Math.Abs(e.X - p.X) < 10) && (Math.Abs(e.Y - p.Y) < 10))
{
if (p.red_black == false) //if black
{
p.red_black = true; //turned red on right click
in_circle = true; //you're in the circle
this.Invalidate();
}
else if (p.red_black == true) //if red
{
coordinates.RemoveAt(i); //remove coordinates from array list on right click
in_circle = true; //you're in the circle
this.Invalidate();
}
}
}
if (in_circle == false) //if right click not in circle
{
this.coordinates.Clear(); //clear coordinates
this.Invalidate();
}
}
}
private void Form1_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
//creates and adds coordinates to array list
PointValues p = new PointValues(e.X, e.Y, false);
this.coordinates.Add(p);
this.Invalidate();
}
if (e.Button == MouseButtons.Right)
{
int total = coordinates.Count;
int index = total - 1;
for (int i = index; i >= 0; i--)
{
PointValues p = (PointValues)coordinates[i];
if ((Math.Abs(e.X - p.X) < 10) && (Math.Abs(e.Y - p.Y) < 10))
{
//if circle is black
if (p.red_black == false)
{
p.red_black = true; //will turn red with right click
this.Invalidate();
}
//if red circle
else if (p.red_black == true)
{
coordinates.RemoveAt(i); //remove coordinates from array list via right click
this.Invalidate();
}
}
}
}
}