[转]使用C#获取WinCE系统中的内存状态及系统状态

一直想取得WinCE5.0系统中的内存状态和系统状态，却苦于不得其法。使用Google一路疯寻乱找，终于找到两篇参考文章，写成下面的测试程 序。实现步骤是，使用VS2005新建一个WinCE应用程序项目并添加一个Form. 然后在Form中拖入两个ListBox， 分别命名为listBox1, listBox2。再拖入两个Button，分别命名不btnGet, btnExit, 之后双击它们添加事件，全部代码如下：

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

namespace WinceMemoryManagementDemo
{
    public partial class MainForm : Form
    {

        //Struct to retrive system info
        [StructLayout(LayoutKind.Sequential)]
        public struct SYSTEM_INFO
        {
            public uint dwOemId;
            public uint dwPageSize;
            public uint lpMinimumApplicationAddress;
            public uint lpMaximumApplicationAddress;
            public uint dwActiveProcessorMask;
            public uint dwNumberOfProcessors;
            public uint dwProcessorType;
            public uint dwAllocationGranularity;
            public uint dwProcessorLevel;
            public uint dwProcessorRevision;
        }


        //struct to retrive memory status
        [StructLayout(LayoutKind.Sequential)]
        public struct MEMORYSTATUS
        {
            public uint dwLength;
            public uint dwMemoryLoad;
            public uint dwTotalPhys;
            public uint dwAvailPhys;
            public uint dwTotalPageFile;
            public uint dwAvailPageFile;
            public uint dwTotalVirtual;
            public uint dwAvailVirtual;
        }




        //To get system information
        [DllImport("coredll")]
        private static extern void GetSystemInfo(ref SYSTEM_INFO pSI);



        //To get Memory status
        [DllImport("coredll")]
        private static extern void GlobalMemoryStatus(ref MEMORYSTATUS buf);





        //Cnstants used for processor types
        public const int PROCESSOR_INTEL_386 = 386;
        public const int PROCESSOR_INTEL_486 = 486;
        public const int PROCESSOR_INTEL_PENTIUM = 586;
        public const int PROCESSOR_MIPS_R4000 = 4000;
        public const int PROCESSOR_ALPHA_21064 = 21064;
        public const int PROCESSOR_TELECHIPS_TCC79X = 2336;





        public MainForm()
        {
            InitializeComponent();
        }


        /// <summary>
        /// 获得信息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnGet_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            listBox2.Items.Clear();
            try
            {
                /**********************************************************************************/

                MEMORYSTATUS memSt = new MEMORYSTATUS();
                GlobalMemoryStatus(ref memSt);

                listBox1.Items.Add("Available Page File: " + (memSt.dwAvailPageFile / 1024).ToString() + " Kb");
                listBox1.Items.Add("Application Memory In Use: " + (memSt.dwTotalPhys / 1024 - memSt.dwAvailPhys / 1024).ToString() + " Kb");
                listBox1.Items.Add("Available Physical Memory: " + (memSt.dwAvailPhys / 1024).ToString() + " Kb");
                listBox1.Items.Add("Available Virtual Memory: " + (memSt.dwAvailVirtual / 1024).ToString() + " Kb");
                listBox1.Items.Add("Size of Structure: " + memSt.dwLength.ToString());
                listBox1.Items.Add("Memory In Use: " + memSt.dwMemoryLoad.ToString() + "%");
                listBox1.Items.Add("Total Page Size: " + (memSt.dwTotalPageFile / 1024).ToString() + " Kb");
                listBox1.Items.Add("Total Physical Memory: " + (memSt.dwTotalPhys / 1024).ToString() + " Kb");
                listBox1.Items.Add("Total Virtual Memory: " + (memSt.dwTotalVirtual / 1024).ToString() + " Kb");

               

                /**********************************************************************************/
                SYSTEM_INFO pSI = new SYSTEM_INFO();
                GetSystemInfo(ref pSI);
                string CPUType;
                switch (pSI.dwProcessorType)
                {

                    case PROCESSOR_INTEL_386:
                        CPUType = "Intel 386";
                        break;
                    case PROCESSOR_INTEL_486:
                        CPUType = "Intel 486";
                        break;
                    case PROCESSOR_INTEL_PENTIUM:
                        CPUType = "Intel Pentium";
                        break;
                    case PROCESSOR_MIPS_R4000:
                        CPUType = "MIPS R4000";
                        break;
                    case PROCESSOR_ALPHA_21064:
                        CPUType = "DEC Alpha 21064";
                        break;
                    case PROCESSOR_TELECHIPS_TCC79X:
                        CPUType = "TELECHIPS-ARM926-TCC79X";
                        break;
                    default:
                        CPUType = "(Unknown)";
                        break;
                }

                listBox2.Items.Add("Active Processor Mask: " + pSI.dwActiveProcessorMask.ToString());
                listBox2.Items.Add("Allocation Granularity: " + pSI.dwAllocationGranularity.ToString());
                listBox2.Items.Add("Number Of Processors: " + pSI.dwNumberOfProcessors.ToString());
                listBox2.Items.Add("OEM ID: " + pSI.dwOemId.ToString());
                listBox2.Items.Add("Page Size: " + pSI.dwPageSize.ToString());
                // Processor Level (Req filtering to get level)
                listBox2.Items.Add("Processor Level Value: " + pSI.dwProcessorLevel.ToString());
                listBox2.Items.Add("Processor Revision: " + pSI.dwProcessorRevision.ToString());
                listBox2.Items.Add("CPU type: " + CPUType);
                listBox2.Items.Add("Maximum Application Address: " + pSI.lpMaximumApplicationAddress.ToString());
                listBox2.Items.Add("Minimum Application Address: " + pSI.lpMinimumApplicationAddress.ToString());

                StatusBar.Text = pSI.dwProcessorType.ToString();
            }
            catch(Exception ex)
            {
                StatusBar.Text = ex.Message;
            }
        }

        private void btnExit_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
    }
}