StatusBar on Dialogs-在VC中为作为主窗口的对话框添加状态栏的几种方法

感谢CSDN论坛上的　Featured(我握着爱情的门票静静排队……) 　提供了一个演示程序的下载链接：​​http://www.bypro.net/PostAttachment.aspx?PostID=21994&AttachmentID=1834​​

感谢CSDN论坛上的　goodboyws(深夜不眠者)　提供了一个为对话框加状态栏和工具栏的演示程序的下载链接：​​http://www.codeproject.com/dialog/dlgtoolstatusbar.asp​​

感谢CSDN论坛上的　 DentistryDoctor(My heart will fly,in the sky.) 　 提供了本文的链接

​​http://www.codeguru.com/Cpp/W-D/dislog/toolbarsandstatusbars/article.php/c1955/​​

Girish Pandit (​​view profile​​​)
July 28, 1999

MFC allows you to easily add status bars to CFrameWnd-derived windows. However, if you want to add a status bar to a dialog, you're going to find the going just a bit more difficult.

Basically, it turned out that I had to dig very deep into the MFC documentation in order to find anything to help me out. One example I found is by ZEKSER Cyril. His techniques works fine, but (IMHO) is not very "clean" since you have to place an invisible static object on the dialog as a kind of placeholder for the status bar. However, I do want to thank him very much for showing me the light at the end of the tunnel.

The technique I came up with works like this: First, you need to develop your dialog (and define its CDialog-based class). Nothing new here so far.

Then, insert the following code into the CDialog::OnInitDialog function (the m_StatBar variable is of type CStatusBarCtrl).

BOOL CMyDlg::OnInitDialog()
{
  CDialog::OnInitDialog();


  // Set the icon for this dialog.  The framework does this automatically
  //  when the application's main window is not a dialog
  SetIcon(m_hIcon, TRUE);     // Set big icon
  SetIcon(m_hIcon, FALSE);    // Set small icon

/************************************************************************/
/*    Adding STATUSBAR                        */
/************************************************************************/

  int nTotWide;   // total width of status bar

  CRect rect;
     this->GetWindowRect(&rect);
   rect.top = rect.bottom- 25;

  m_bRvStatOk = m_StatBar.Create(WS_CHILD | WS_BORDER | WS_VISIBLE ,rect,this,
                        IDC_STATUSBAR);

      if (m_bRvStatOk == NULL)
  {
            AfxMessageBox ("Status Bar not created!", NULL, MB_OK );
  }

  //
    //  get size of window, use to configure the status
      //  bar with four separate parts
      //
    
  CRect rWin;
    this->GetWindowRect(&rWin);
    nTotWide = rWin.right-rWin.left;

  //
  // Make each part 1/4 of the total width of the window.
  //
   
  m_Widths[0] = nTotWide / 4;
    m_Widths[1] = nTotWide / 2;
    m_Widths[2] = nTotWide - m_Widths[0];
    m_Widths[3] = -1;

  m_StatBar.SetMinHeight(25);
  m_StatBar.SetParts( 4, m_Widths);

  //
  // now lets put some text, different styles into parts of status bar
  //

  m_StatBar.SetText("WITH BORDER.", 0,0);
  m_StatBar.SetText("WITHOUT BORDER.",1,SBT_NOBORDERS);
  m_StatBar.SetText("POPUP.",2,SBT_POPOUT);

  //
  //  make the last part owner-drawn, add a bitmap
  //

  m_StatBar.SetText(NULL,3, SBT_OWNERDRAW);

  //  hBmp is a Global Variable of type HBITMAP 
  hBmp = ::LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_BITMAP1));

/************************************************************************/
/*    End STATUSBAR                         */
/************************************************************************/

  // TODO: Add extra initialization here

  return TRUE;  // return TRUE  unless you set the focus to a control

}

The fourth pane of the status bar is owner drawn because it is used to display a bitmap. In order to do this, simply add a message handler for the dialog's WM_DRAWITEM message. Once you've added that function, update it so that when finished it looks like the following.

void CMyDlg::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct)
{

  //
  // Draw bitmap in status bar
  //

  HDC hdcMem;   // device context for memory
      HGDIOBJ hbmOld;     // old bitmap area we're over-writing
      BITMAP bm;    // bitmap we're using

  //
      // Create a compatible DC in memory
  //

  hdcMem = CreateCompatibleDC(lpDrawItemStruct->hDC);
      // Select the "logo.bmp" bitmap into the DC.
      hbmOld = ::SelectObject(hdcMem, hBmp);
      // Get the size of the bitmap
      ::GetObject(hBmp, sizeof(bm), &bm);
      // Blt the bitmap to the part.

      BitBlt(lpDrawItemStruct->hDC,lpDrawItemStruct->rcItem.left,
      lpDrawItemStruct->rcItem.top, bm.bmWidth, bm.bmHeight,
          hdcMem, 0, 0,SRCCOPY);


  //
  // Add some text..1st. get bounding rectangle, then position & display text
  //

  char szText[16];
  RECT rText;  // text rectangle
  rText.left = lpDrawItemStruct->rcItem.left+24;
  rText.top  = lpDrawItemStruct->rcItem.top;
  rText.right = lpDrawItemStruct->rcItem.right-20;
  rText.bottom = lpDrawItemStruct->rcItem.bottom;

      //
      //  add some text after the logo bitmap here
      //

  memset(szText,0,sizeof(szText));
  strcpy(szText,"LOGO");    // text to draw

  SelectObject( lpDrawItemStruct->hDC, GetStockObject( ANSI_VAR_FONT ) );
  ::SetBkColor(lpDrawItemStruct->hDC, 0x00c0c0c0);  // set background color
      ExtTextOut(lpDrawItemStruct->hDC, lpDrawItemStruct->rcItem.left+24, lpDrawItemStruct->rcItem.top+4, ETO_OPAQUE, &rText, szText,
      strlen(szText),NULL );    // draw the text in the rectangle rText

  //
  // End adding text.  Reselect the original object into the DC.
  //

      SelectObject(hdcMem, hbmOld);
      // Delete the compatible DC. 
      DeleteDC(hdcMem);
}

Make the following changes to the dialog's header file.

class CMyDlg : public CDialog
{

// Construction
public:
  CMyDlg(CWnd* pParent = NULL); // standard constructor
  CStatusBarCtrl  m_StatBar;

  .....................................
  ...................................
  ......................................
}

CStatusBarCtrl m_StatBar;

..................................... ................................... ...................................... }

Finally, make the following changes to the resource.h file.

//{{NO_DEPENDENCIES}}
// Microsoft Developer Studio generated include file.
//

#define IDM_ABOUTBOX    0x0010
#define IDC_STATUSBAR           32500
  .....................................
  ...................................
  ......................................

That's it! You now have a status bar at the bottom of your dialog!