Insert your Logo between Caption Bar and Menu Bar

• Download demo project - 20.8 KB

Introduction

The Real-Player program inserts its logo between the caption bar and menu bar. If you ever wanted to do this, then just follow me. :)

1. Create a dialog based project (need not care whether SDI or MDI)

   Project name: Fake Real Player

2. Insert your Logo bitmap file in your project.

   Logo name: IDB_LOGO

3. To make room for drawing your logo, insert a temporary menu item in your default menu resource like 'menu for Image' at the first position.

   resource ID: IDM_IMAGE, no popup menu

4. Enlarge your IDM_IMAGE menu width to make room for logo in the OnMeasureItem() method:

   void CFakeRealDlg::OnMeasureItem(int nIDCtl, 
          LPMEASUREITEMSTRUCT lpMeasureItemStruct) 
   {
       if (lpMeasureItemStruct->CtlType == ODT_MENU)
       {
           if (lpMeasureItemStruct->itemID == IDM_IMAGE)
               lpMeasureItemStruct->itemWidth = 
                                 m_rectLogo.Width() + 5;
       }
       
       CDialog::OnMeasureItem(nIDCtl, 
                            lpMeasureItemStruct);
   }

5. Load your Logo bitmap file in your OnInitDialog() method.

   m_hBmp = (HBITMAP)LoadImage(AfxGetInstanceHandle(), 
              MAKEINTRESOURCE(IDB_LOGO), IMAGE_BITMAP, 
              0, 0, LR_CREATEDIBSECTION);
   BITMAP bm;
   GetObject(m_hBmp, sizeof(bm), &bm);    
   
   m_rectLogo.left = 15;
   m_rectLogo.right = 15 + bm.bmWidth;
   m_rectLogo.top = 2 ;
   m_rectLogo.bottom = 2 + bm.bmHeight;

6. Make a DrawLogo() method to paint your Logo Bitmap.

   void CFakeRealDlg::DrawLogo()
   {
       CDC* pdc= GetWindowDC();
   
       CDC memdc;    
       memdc.CreateCompatibleDC(pdc);    
       memdc.SelectObject(m_hBmp);    
       pdc->BitBlt(15, 2, 
           m_rectLogo.Width(), 
           m_rectLogo.Height(), 
           &memdc, 0, 0, SRCCOPY);    
   
       ReleaseDC(pdc);    
   }

7. Override your OnInitMenu() method and OnSystemMenu() to protect Window draw line between the caption bar and the menu bar.

   void CFakeRealDlg::OnInitMenu(CMenu* pMenu) 
   {
       CDialog::OnInitMenu(pMenu);
   
       // Important!!    
       DrawLogo();
   }
   
   void CFakeRealDlg::OnSysCommand(UINT nID, 
                                LPARAM lParam)
   {
       if ((nID & 0xFFF0) == IDM_ABOUTBOX)
       {
           CAboutDlg dlgAbout;
           dlgAbout.DoModal();
       }
       else
       {
           // Important!!!
           DrawLogo();
   
           CDialog::OnSysCommand(nID, lParam);
       }
   }

8. Override your OnNcPaint() to paint your Logo whenever FakeReal is shown.

   void CRealDlg::OnNcPaint() 
   {
       // Default is equal 
       // 'CDialog::OnNcPaint()' .. :)
       Default();
   
       // Important!!!
       DrawLogo();
   }

Steps 1~8 show you what you must do, but you may want to perfect this sample. For example, you may want to add an owner-draw caption to hide the system icon. If you upgrade this sample, I'll be very happy. Have a nice day!!!

Member of Ajou University Computer Club - C.C.

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