selected area to cut an image
- by Oskar Marciniak
Hi I would do the selected area to cut an image on picturebox control.
I have the following code:
using System;
using System.Drawing;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
private Rectangle rect;
private Pen p;
public Form1()
{
InitializeComponent();
}
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
if (this.p == null)
this.p = new Pen(Color.FromArgb(100, 200, 200, 200), 5);
if (this.rect.Width > 0)
e.Graphics.DrawRectangle(this.p, this.rect);
}
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
if (e.X < this.rect.X)
{
this.rect.Width = this.rect.X - e.X;
this.rect.X = e.X;
}
else
{
this.rect.Width = e.X - this.rect.X;
}
if (e.Y < this.rect.Y)
{
this.rect.Height = this.rect.Y - e.Y;
this.rect.Y = e.Y;
}
else
{
this.rect.Height = e.Y - this.rect.Y;
}
this.Invalidate(this.rect);
}
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
this.rect.X = e.X;
this.rect.Y = e.Y;
}
}
}
It returns an error here:
Application.Run(new Form1());
Why?
thanks for all replies ;p
