C#读取Win32标准DLL文件中的Bitmap（位图）

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C#通过API函数，读取标准的Win32DLL 文件中的 Bitmap位图文件

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Text;
using System.IO;
using System.Drawing;

namespace LoadLibrary
{
    public static class Program
    {

        [DllImport("kernel32.dll", EntryPoint = "LoadLibraryA")]
        public static extern IntPtr LoadLibrary(string sLibName);
        [DllImport("kernel32.dll", EntryPoint = "FreeLibrary")]
        public static extern int FreeLibrary(IntPtr hLib);

[DllImport("User32.dll")]
public static extern IntPtr LoadBitmap(IntPtr hInstance, int uID);

        [STAThread]
        static void Main(string[] args)
        {

            IntPtr hDll = LoadLibrary("cards.dll");
            if (hDll == IntPtr.Zero)
            {
                MessageBox.Show("Can't load library!");
                return;
            }

            IntPtr hRes = LoadBitmap(hDll, 10);
            Bitmap bmp = Bitmap.FromHbitmap(hRes);

            FreeLibrary(hDll);
        }
    }

}

//运行环境 VS2008 (.NET)

//cards.dll 为Windows自带的扑克牌游戏扑克牌图案