MFC控件大小随窗体大小而改变

void CPaperManagementDlg::OnSize(UINT nType, int cx, int cy)  
{ 
  CDialog::OnSize(nType, cx, cy); 
  if(nType==1) return;//最小化则什么都不做 
  // TODO: Add your message handler code here 
  CWnd *pWnd;  
  pWnd = GetDlgItem(IDC_STATIC); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_FILE_TREE); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_EDIT_NAME); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_EDIT_REFERENCE); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_EDIT_SUMMARY); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_EDIT_REMARK); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_BUTTON_UPDATE); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_BUTTON_SAVE); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_STATIC_1); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_STATIC_2); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_STATIC_3); 
  ChangeSize(pWnd, cx, cy); 
  pWnd = GetDlgItem(IDC_STATIC_4); 
  ChangeSize(pWnd, cx, cy); 
  GetClientRect(&m_rect);// 将变化后的对话框大小设为旧大小   
} 

void CPaperManagementDlg::ChangeSize(CWnd *pWnd, int cx, int cy) 
{ 
  if(pWnd) //判断是否为空，因为对话框创建时会调用此函数，而当时控件还未创建  
  { 
    CRect rect;  //获取控件变化前的大小  
    pWnd->GetWindowRect(&rect); 
    ScreenToClient(&rect);//将控件大小转换为在对话框中的区域坐标 
  
    //  cx/m_rect.Width()为对话框在横向的变化比例 
    rect.left=rect.left*cx/m_rect.Width();//调整控件大小 
    rect.right=rect.right*cx/m_rect.Width(); 
    rect.top=rect.top*cy/m_rect.Height(); 
    rect.bottom=rect.bottom*cy/m_rect.Height(); 
    pWnd->MoveWindow(rect);//设置控件大小 
  } 
} 

  CWnd *pWnd; 
  pWnd = GetDlgItem(IDC_BUTTON1);   //获取控件句柄
  if(nType==1) return;  //如果是窗体最小化则什么都不做
  if(pWnd)//判断是否为空，因为对话框创建时会调用此函数，而当时控件还未创建
  { 
  CRect rect;  //获取控件变化前大小
   LONG cWidth,cHeight; //记录控件的右部到窗体右部的距离，记录控件的底部到窗体底部的距离
   pWnd->GetWindowRect(&rect);
   ScreenToClient(&rect);//将控件大小转换为在对话框中的区域坐标
   cWidth=m_rect.Width()-rect.right;
   cHeight=m_rect.Height()-rect.bottom;
   rect.left=cx-rect.Width()-cWidth;
   rect.right=cx-cWidth;  
   rect.top=cy-rect.Height()-cHeight;
   rect.bottom=cy-cHeight;
   pWnd->MoveWindow(rect);//设置控件大小
  }
  GetClientRect(&m_rect);//将变化后的对话框大小设为旧大小