C#读取Win32标准DLL文件中的Bitmap（位图）

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