学步园

在C#中，通过Windows API函数读取标准的Win32 DLL文件中的字符串资源

下面的代码以读取 user32.dll 文件中的ＩＤ号为712的字符串资源。

如果代码运行正常的话，应该可以看到

/*

Other people are logged on to this remote computer.  Shutting down Windows might cause them to lose data. Also, someone at the remote location will have to restart the computer manually./r/n/r/nDo you want to continue shutting down?

如果是中文版的ＸＰ，此处的字符串则不同

*/

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

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", EntryPoint = "LoadStringW", CharSet = CharSet.Ansi)]
        public static extern int LoadString(IntPtr hLib, uint resID, byte[] buf, int bufSize);

        [STAThread]
        static void Main(string[] args) {
            IntPtr hDll = LoadLibrary("USER32.DLL");
            if(hDll == IntPtr.Zero){
                MessageBox.Show("Can't load library!");
                return;
            }
            byte[] sb=new byte[1024];
            int ret=0;
            ret=LoadString(hDll,712,sb,1025);
            if(ret == 0){
                MessageBox.Show("String resource 712 is not found!");
                FreeLibrary(hDll);
                return;
            }
            MessageBox.Show("String Resource 100: " +Encoding.Unicode.GetString(sb).Replace("/0",""));
            FreeLibrary(hDll);
            return;
        }
    }

}

//运行环境：VS2008 (.NET2.0) 下通过