Moving a drawn line with the mouse

Question

I am trying to move a drawn line by grabbing it with the mouse.

The line have already been drawn with Graphics.DrawLine(Pen P, Point A, Point B).

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Answer 1

I suggest you create a rectangle that is the width of the line and the length of the line, then you can use

if(rectangle.Contains(Point p))
{
   // do your move
}

You can also inflate the rectangle to make it easier to grab with:

rectangle.Inflate(1, 1);