// DoCreateStatusBar – creates a status bar and divides it into 
//     the specified number of parts. 
// Returns the handle to the status bar. 
// hwndParent – parent window for the status bar. 
// nStatusID – child window identifier. 
// hinst – handle to the application instance. 
// nParts – number of parts into which to divide the status bar. 
HWND DoCreateStatusBar(HWND hwndParent, int nStatusID, 
    HINSTANCE hinst, int nParts) 
{ 
    HWND hwndStatus; 
    RECT rcClient; 
    HLOCAL hloc; 
    LPINT lpParts; 
    int i, nWidth;
    // Ensure that the common control DLL is loaded. 
    InitCommonControls();
 
    // Create the status bar. 
    hwndStatus = CreateWindowEx( 
        0,                       // no extended styles 
        STATUSCLASSNAME,         // name of status bar class 
        (LPCTSTR) NULL,          // no text when first created 
        SBARS_SIZEGRIP |         // includes a sizing grip 
        WS_CHILD,                // creates a child window 
        0, 0, 0, 0,              // ignores size and position 
        hwndParent,              // handle to parent window 
        (HMENU) nStatusID,       // child window identifier 
        hinst,                   // handle to application instance 
        NULL);                   // no window creation data
 
    // Get the coordinates of the parent window’s client area. 
    GetClientRect(hwndParent, &rcClient);
 
    // Allocate an array for holding the right edge coordinates. 
    hloc = LocalAlloc(LHND, sizeof(int) * nParts); 
    lpParts = LocalLock(hloc);
 
    // Calculate the right edge coordinate for each part, and 
    // copy the coordinates to the array. 
    nWidth = rcClient.right / nParts; 
    for (i = 0; i < nParts; i++) { 
        lpParts[i] = nWidth; 
        nWidth += nWidth; 
    } 
 
    // Tell the status bar to create the window parts. 
    SendMessage(hwndStatus, SB_SETPARTS, (WPARAM) nParts, 
        (LPARAM) lpParts);
 
    // Free the array, and return. 
    LocalUnlock(hloc); 
    LocalFree(hloc); 
    return hwndStatus; 
}

package done.servlet;
import java.io.*;
import java.util.*;
import java.util.zip.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class ZipDownLoad extends HttpServlet {
 
 /**
 * Handles GET requests
 */
 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  //设置响应头,MIMEtype告诉浏览器传送的文件类型
  response.setContentType( "application/x-zip-compressed" );
  //inline;参数让浏览器弹出下载窗口,而不是在网页中打开文件.filename设定文件名
  response.setHeader( "Content-Disposition" , "inline; filename=download.zip" );
  //通过response获得ServletOutputStream对象
  ServletOutputStream sos=response.getOutputStream();
  //获得ZipOutputStream对象
  ZipOutputStream out=new ZipOutputStream(new BufferedOutputStream(sos));  
  //得到要下载的文件对象
  BufferedInputStream in=new BufferedInputStream(new FileInputStream("c:\\grub.exe"));
  //在zip文件中新建一个grub.exe文件
  out.putNextEntry(new ZipEntry("grub.exe"));
  //逐字读出写入
  int c;
  while((c = in.read())!=-1){
   out.write(c);
  }
  in.close();
  out.close(); //这里一句一定要,要不就会打开文件出错
 }
 
 /**
 * Handles POST requests
 */
 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  this.doGet(request,response);
    }
 /**
 * Destroy the servlet
 */
 public void  destroy () {
 }
}