void CMemStateDlg::OnButton1()
{

 MEMORYSTATUS memStatus;  
 CString str; 
 memStatus.dwLength=sizeof(MEMORYSTATUS);
 ::GlobalMemoryStatus(&memStatus);

 m_CtrProgress.SetRange(0, (int)memStatus.dwTotalPhys/1024/1024);
 m_CtrProgress.SetStep(1);
 m_CtrProgress.SetPos((int)memStatus.dwAvailPhys/1024/1024);

 str.Format("%d",memStatus.dwAvailPageFile/1024/1024);
 GetDlgItem(IDC_VIRTUALMEM)->SetWindowText(str+" MB");

 str.Format("%d",memStatus.dwTotalPhys/1024/1024);
 GetDlgItem(IDC_TOTALMEM)->SetWindowText(str+" MB");

 str.Format("%d",memStatus.dwAvailPhys/1024/1024);
 GetDlgItem(IDC_AVAILMEM)->SetWindowText(str+" MB");

 str.Format("%d",memStatus.dwTotalPageFile/1024/1024);
 GetDlgItem(IDC_TOTAL_PAGEFILE)->SetWindowText(str+" MB");

 str.Format("%d",100-memStatus.dwMemoryLoad);
 m_CtrProgress.SetCaption("可用的物理内存 "+str+" %");
}