1 代码

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 TestControls
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}

[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern bool MessageBeep(uint type);

[DllImport("Shell32.dll")]
public extern static int ExtractIconEx(string libName, int iconIndex, IntPtr[] largeIcon, IntPtr[] smallIcon, int nIcons);

public static IntPtr[] largeIcon;
public static IntPtr[] smallIcon;

private void Form1_Load(object sender, EventArgs e)
{
largeIcon = new IntPtr[250];
smallIcon = new IntPtr[250];

ExtractIconEx("shell32.dll", 0, largeIcon, smallIcon, 250);

for (int i = 1; i < 200; ++i)
{
Icon ic = Icon.FromHandle(largeIcon[i]);
((PictureBox)this.Controls["pictureBox" + i.ToString()]).Image = ic.ToBitmap();
}
}
}
}

2 效果图