modification on the drawn rectangle in paint event handeler...

Nivas Sadashivam

Hi,

I have drawn the rectangle using picture box paint. Now I like to edit the drawn rectangle (Like to increase or decrease the length of the drawn rectangle). how can i do this.

for code refer below link:

http://www.c-sharpcorner.com/Forums/ShowMessages.aspx?ThreadID=87153

2 Replies

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Nivas Sadashivam16y ago
Iam trying to use array rectangle to do this. but when i run my application it shows error message

private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            if (mybitmap == null)
            {
                mybitmap = new Bitmap(sz.Width, sz.Height);

            }
            rect[count] = new Rectangle(e.X, e.Y, 0, 0);
            this.Invalidate();

error as "Object reference not set to an instance of an object." (Null reference Exception was unhandled.)

how to solve this one....
0
Abhimanyu K Vatsa16y ago
That was a simple drawing, you can not modify it there without any special image editor. We only use to draw and erase not can modify. Because there is no any method or function to edit the graphics like increase/decrease the size.

I hope I am wright.
0