using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace VP3._1._3
{
public partial class Form1 : Form
{
int x = 0;
int y = 0;
int w = 50;
int h = 50;
bool isClicked = false;
public Form1()
{
this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint, true);
this.SetStyle(ControlStyles.OptimizedDoubleBuffer, false);
x = this.ClientRectangle.Width / 2;
y = this.ClientRectangle.Height / 2;
this.MouseMove += Form1_MouseMove;
this.MouseClick += Form1_MouseClick;
this.KeyPress += Form1_KeyPress;
this.DoubleBuffered = true;
}
private void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == '+')
{
w += 10;
h += 10;
}
else
if (e.KeyChar == '-')
{
w -= 10;
h -= 10;
}
this.Invalidate();
}
private void Form1_MouseClick(object sender, MouseEventArgs e)
{
Rectangle rect = new Rectangle(x, y, w, h);
if (rect.Contains(e.X, e.Y))
{
if (isClicked)
isClicked = false;
else
isClicked = true;
}
}
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (isClicked)
{
x = e.X;
y = e.Y;
this.Invalidate();
}
}
protected override void OnPaint(PaintEventArgs e)
{
Graphics g = e.Graphics;
g.Clear(Color.White);
g.FillRectangle(Brushes.Red, x, y, w, h);
}
}
}
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