Mega Code Archive
Handle Mouse click event on an Image
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using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
public class Form1 : System.Windows.Forms.Form
{
private Image bMapImageA = new Bitmap("winter.jpg");
private Image bMapImageB = new Bitmap("winter.jpg");
private Image bMapImageC = new Bitmap("winter.jpg");
private Rectangle rectA = new Rectangle(10, 10, 90, 90);
private Rectangle rectB = new Rectangle(10, 110, 90, 90);
private Rectangle rectC = new Rectangle(10, 210, 90, 90);
private bool isImageClicked = false;
private int imageClicked;
public Form1()
{
InitializeComponent();
CenterToScreen();
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Text = "Form1";
this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseUp);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
}
static void Main()
{
Application.Run(new Form1());
}
private void Form1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
Point mousePt = new Point(e.X, e.Y);
if(rectA.Contains(mousePt)) {
isImageClicked = true;
imageClicked = 0;
this.Text = "You clicked image A";
} else if(rectB.Contains(mousePt)) {
isImageClicked = true;
imageClicked = 1;
this.Text = "You clicked image B";
} else if(rectC.Contains(mousePt)) {
isImageClicked = true;
imageClicked = 2;
this.Text = "You clicked image C";
} else {
isImageClicked = false;
this.Text = "Images";
}
Invalidate();
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
g.DrawImage(bMapImageA, rectA);
g.DrawImage(bMapImageB, rectB);
g.DrawImage(bMapImageC, rectC);
if(isImageClicked == true) {
Pen outline = new Pen(Color.Black, 2);
switch(imageClicked) {
case 0:
g.DrawRectangle(outline, rectA);
break;
case 1:
g.DrawRectangle(outline, rectB);
break;
case 2:
g.DrawRectangle(outline, rectC);
break;
default:
break;
}
}
}
}
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