C# ImageSearchDll

Gergo87 · 03/25/2011, 14:31

Hy Guys.

I want to use ImageSearch in VS(2008 or 2010) C#
I have found this, but this is written for VB:

But i have found this code(below) with google, but this throw me an exception, when i "click" on button, and try to search an image: "System.ExecutionEngineException"

If anybody have a solution, please share with me, thanks.
Any help would be appreciated.

Code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace ImageSearch
{
    public partial class Form1 : Form
    {

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int[] img = IMGSearch.FindImage(0, 0, 1366, 768, "C:\\s.bmp");
            if (img[0] != 0)
            {
                MessageBox.Show("Img found", "My Application", MessageBoxButtons.OKCancel, MessageBoxIcon.Asterisk);
            }
        }
    }

    public static class IMGSearch
    {
        //[DllImport("ImageSearchDLL.dll", EntryPoint="ImageSearch")]
        [DllImport("ImageSearchDLL.dll")]
        public static extern string ImageSearch(int x1, int y1, int x2, int y2, string str);
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main2()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }

        public static int[] FindImage(int L, int T, int R, int B, string F)
        {
            int[] aRTN = new int[5];
            
            //MessageBox.Show(R.ToString());
            string rtn = ImageSearch(L, T, R, B, F);

            //MessageBox.Show(rtn);
 
            if (rtn == "0")
            {
                aRTN[0] = 0;
                return aRTN;
            }
            else
            {
                string[] coords = rtn.Split('|'); //split return value of imagesearch into array
                //int[] aRTN = new int[5]; //declare int array with enough elements
                aRTN[0] = int.Parse(coords[0]); //convert the string values into ints
                aRTN[1] = int.Parse(coords[1]);
                aRTN[2] = int.Parse(coords[2]);
                aRTN[3] = int.Parse(coords[3]);
                aRTN[4] = int.Parse(coords[4]);
                return aRTN;
            }
        }
    }
}

nkkk · 03/25/2011, 22:31

Quote:

Originally Posted by Gergo87

Hy Guys.

I want to use ImageSearch in VS(2008 or 2010) C#
I have found this, but this is written for VB:

But i have found this code(below) with google, but this throw me an exception, when i "click" on button, and try to search an image: "System.ExecutionEngineException"

If anybody have a solution, please share with me, thanks.
Any help would be appreciated.

Spoiler

Code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace ImageSearch
{
    public partial class Form1 : Form
    {

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int[] img = IMGSearch.FindImage(0, 0, 1366, 768, "C:\\s.bmp");
            if (img[0] != 0)
            {
                MessageBox.Show("Img found", "My Application", MessageBoxButtons.OKCancel, MessageBoxIcon.Asterisk);
            }
        }
    }

    public static class IMGSearch
    {
        //[DllImport("ImageSearchDLL.dll", EntryPoint="ImageSearch")]
        [DllImport("ImageSearchDLL.dll")]
        public static extern string ImageSearch(int x1, int y1, int x2, int y2, string str);
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main2()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }

        public static int[] FindImage(int L, int T, int R, int B, string F)
        {
            int[] aRTN = new int[5];
            
            //MessageBox.Show(R.ToString());
            string rtn = ImageSearch(L, T, R, B, F);

            //MessageBox.Show(rtn);
 
            if (rtn == "0")
            {
                aRTN[0] = 0;
                return aRTN;
            }
            else
            {
                string[] coords = rtn.Split('|'); //split return value of imagesearch into array
                //int[] aRTN = new int[5]; //declare int array with enough elements
                aRTN[0] = int.Parse(coords[0]); //convert the string values into ints
                aRTN[1] = int.Parse(coords[1]);
                aRTN[2] = int.Parse(coords[2]);
                aRTN[3] = int.Parse(coords[3]);
                aRTN[4] = int.Parse(coords[4]);
                return aRTN;
            }
        }
    }
}

do you have a dll called "ImageSearchDLL"? because in your code is "[DllImport("ImageSearchDLL.dll")]" that mean you should have one.

but it is really easy to write a ImageSearch on you own, you can make a screenshot:

Code:

Bitmap bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb);
            Graphics gfxScreenshot = Graphics.FromImage(bmpScreenshot);
            // Take the screenshot from the upper left corner to the right bottom corner
            gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);

and load the image you want to search from a file:

Code:

            Bitmap bmpSearch = new Bitmap("aImage.bmp");

to Compare these Bitmaps you can for example use a for-loop and Bitmap.GetPixel(int x, int y) and to find the right point on the screen.

Gergo87 · 03/25/2011, 22:55

Quote:
Originally Posted by nkkk
do you have a dll called "ImageSearchDLL"? because in your code is "[DllImport("ImageSearchDLL.dll")]" that mean you should have one.

but it is really easy to write a ImageSearch on you own, you can make a screenshot:
Code:
Bitmap bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb);
            Graphics gfxScreenshot = Graphics.FromImage(bmpScreenshot);
            // Take the screenshot from the upper left corner to the right bottom corner
            gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);
and load the image you want to search from a file:
Code:
            Bitmap bmpSearch = new Bitmap("aImage.bmp");
to Compare these Bitmaps you can for example use a for-loop and Bitmap.GetPixel(int x, int y) and to find the right point on the screen.

Yes, dll name is ImageSearchDLL.dll.
Thanks for answer, i will try it.