Drawing a line between two points with Mouseclick

Question

Hello everyone

I'm trying to make a very basic dwawing application where you can draw (eg. a line) on a panel.

The very basic code to draw a line on the panel by code is this:

private void panel1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)

{

Pen blackPen = new Pen(Color.Black, 4);

int X1 = 0, Y1 = 0, X2 = 250, Y2 = 100;

Graphics graphics = panel1.CreateGraphics();

e.Graphics.DrawLine(blackPen, X1, Y1, X2, Y2);

blackPen.Dispose();

}

Now is my question: how do i have to write the code so i can draw a line with 2 mouseclicks?

I think we could use point structures ? But how do i have to write everything ?

Guan · Answer

Draw it between two clicks. But right now i succeeded to make it ;) Thx anyway

Pasan Ratnayake · Answer

What are you trying to do exactly? Is it that you are trying to draw the line when a user presses the left mouse button drags it to somewhere else and release? or to draw a line between two consecutive clicks?

Guan · Answer

Well that isn't the problem. I understand the code to check if it's the first click or the 2nd (if else). But i don't understand how to bringing it all together. And especially how you can write a mouseclick in C#.

Mahesh Chand · Answer

I guess you will have to know when first and second mouse click is done. Store these two points and on second time mouse click draw a line from Point1 to Point2.