Enhancements for Jim Koornneef 's CGradientMenu Class

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Introduction

This is a sizeable GradientMenu with settings for Menu -Textcolor, -Backgroundcolor and support for the MFC-Framework. Messages it handles are CCmdUI, WM_...MESSAGESTRING, etc.

Background

The CGradientMenu class of Jim Koornneef doesn’t automatically update the states of the menu entries. I decided to write a class based on his adding some new features to it.

Using the Code

Because Jim Koornneef described all necessary things to use his GradientMenu class, I give here only some additional comments about the changes and enhancements.

Changes

• CGradientMenu::CGradientMenu -> set Menu-Fontsize
• CGradientMenu::OnPaint -> uses Menu-Fontsize, removing Ampersand's
• CGradientMenu::PopupSubMenu -> uses SetMenuColors()
• CGradientMenu :: TrackPopupMenu -> only WM_INITMENUPOPUP to get update info for the menu (CCmdUI)
• MenuToolBar::OnCreate -> uses Menu-Fontsize
• MenuToolBar::OnCustomDrawNotify -> uses Menu- and HighLight-Colors, handling of TABs
• MenuToolBar::OnMouseMove -> send MessageString

New

• CGradientMenu::ChangeState -> set state (gray / check) of MenuItem
• CGradientMenu::SetMenuColors -> set colors for Menu-Text, -GrayText, -BackGround, -Highlights
• MenuToolBar::OnEraseBkgnd -> uses Menu-Background

Sample

// Create a Menu which size is nearly independent of the screen resolution
 
MainFrame.h
[otected:  
 
   CToolBar m_wndMenuBar;
   CFont    dfont;
   int      iFontHight;
   int      iMenuFontHight;
   int      iGradientWidth;
]
 
MainFrame.cpp
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#include "afxadv.h" // for AFX_IDM_FIRST_MDICHILD
#include "GradientMenu.h"
 
CMainFrame::~CMainFrame()
{
  dfont.DeleteObject ();
} 
 
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
  int _scx, _scy;
  HDC hdc;
 
  hDC = ::GetDC (NULL); 
  _scx = GetDeviceCaps(hDC, HORZRES);
  _scy = GetDeviceCaps(hDC, VERTRES);
  _scb = GetDeviceCaps(hDC, BITSPIXEL);
  ::ReleaseDC (NULL, hDC); 
 
// resolution dependent font size for the menubar
  iFontHight = 16 * _scy / 768;
// resolution dependent font size for the popup menus
  iMenuFontHight = 14 * _scy / 768;
  iGradientWidth = iMenuFontHight + 8;
 
  dfont.CreateFont (
   iFontHight,      // nHeight
   0,         // nWidth
   0,         // nEscapement
   0,         // nOrientation
   FW_BOLD,       // nWeight
   FALSE,       // bItalic
   FALSE,       // bUnderline
   0,         // cStrikeOut
   ANSI_CHARSET,      // nCharSet
   OUT_DEFAULT_PRECIS,    // nOutPrecision
   CLIP_DEFAULT_PRECIS,   // nClipPrecision
   DEFAULT_QUALITY,     // nQuality
   DEFAULT_PITCH | FF_SWISS,  // nPitchAndFamily
   "Arial");      // lpszFacename
 
  // Create Menu Toolbar
  if (!m_wndMenuBar.CreateEx(this, TBSTYLE_FLAT | TBSTYLE_WRAPABLE, 
       WS_CHILD | WS_VISIBLE | CBRS_ALIGN_TOP
       | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC,
       CRect(0,0,_scx, 0), CG_ID_VIEW_MENUBAR))
  {
   AfxMessageBox ("Failed to create menubar");
   return -1;   // fail to create
  }
// no Bitmaps
   m_wndMenuBar.GetToolBarCtrl ().SetBitmapSize(CSize (0, 0)); 
// necessary for the button text, the exact button
// size is later calculate automatic
   m_wndMenuBar.GetToolBarCtrl ().SetButtonSize (
     CSize (90, 8 + iFontHight));
// set the resolution dependant font
   m_wndMenuBar.GetToolBarCtrl ().SetFont (&dfont, TRUE);
  
  TBBUTTON   tbb; 
  int    nStr;
 
  memset(&tbb, 0, sizeof(TBBUTTON));
 
  tbb.fsState = TBSTATE_ENABLED;
  tbb.fsStyle = TBSTYLE_BUTTON|TBSTYLE_AUTOSIZE;
  tbb.iBitmap = -1;
  tbb.dwData = NULL;
 
  // Add Menu-Buttons
  nStr =  m_wndMenuBar.GetToolBarCtrl ().AddStrings(IDString (IDS_MB_FILE));
  tbb.iString = nStr;
  tbb.idCommand = ID_MB_FILE;
  m_wndMenuBar.GetToolBarCtrl ().AddButtons(1, &tbb);
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  nStr =  m_wndMenuBar.GetToolBarCtrl ().AddStrings(IDString (IDS_MB_WINDOW));
  tbb.iString = nStr;
  tbb.idCommand = ID_MB_WINDOW;
  m_wndMenuBar.GetToolBarCtrl ().AddButtons(1, &tbb);
 
  // Dock the Menu-Bar on top of the window
  EnableDocking(CBRS_ALIGN_ANY);
  m_wndMenuBar.EnableDocking(CBRS_ALIGN_TOP);
  DockControlBar(&m_wndMenuBar);
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}
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void CMainFrame::OnFile()
{
  RECT rec;
  POINT pnt;
 
  m_wndMenuBar.GetToolBarCtrl ().GetRect (ID_MB_FILE, &rec);
  ClientToScreen(&rec);
  pnt.y = rec.bottom - 1;
  pnt.x = rec.left;
  
  // Set up the colours.. Might want these in program options
  COLORREF rgb1(RGB(128, 255, 128));
  COLORREF rgb2(RGB(0, 0, 0));
  COLORREF rgbText(RGB(255, 255, 255));
  COLORREF rgbMText(RGB(0, 0, 90));
  COLORREF rgbMGray = GetSysColor(COLOR_GRAYTEXT);
  COLORREF rgbMBack (RGB(255, 255, 230));
  
  // Create a menu, set the width of gradient
  CGradientMenu oMenu(iGradientWidth, TRUE, iMenuFontHight);
  oMenu.LoadMenu(IDR_BEARBEITEN);
  
  // Select colours and set the title for the 1st menu
  // sub menus will take the name of the item selected in the parent.
  oMenu.SetGradientColors(rgb1, rgb2, rgbText);
  oMenu.SetMenuColors(rgbMText, rgbMGray, rgbMBack);
  oMenu.SetTitle((CString)IDString (IDS_MB_FILE)); 
    // i do this for easier changing language in rc-file
  
  // Show the menu!
  oMenu.TrackPopupMenu(0, pnt.x, pnt.y, this);
}
//   P.S.
//   if you include the following lines in your file-menu you 
//   can get the last used files in your GradientMenu
//
//   MENUITEM SEPARATOR
//   MENUITEM "Last File",   ID_FILE_MRU_FIRST, GRAYED
 
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// including the list of views to window-menu
// i have already made a enumeration of the shown windows
// iImgCnt = count of shown windows
// iImgAct = number of window that has actually the focus
// pImgDoc[i] = array with pointers to Doc-Objects
 
void CMainFrame::OnWindow()
{
  RECT rec;
  POINT pnt;
  int i;
  UINT flags;
  CMedGrf32Doc* pDoc;
  POSITION pos;
  CWnd* pFrame;
  CMyView* pView;
  char buf[1024], bff[_MAX_PATH];
 
  m_wndMenuBar.GetToolBarCtrl ().GetRect (ID_MB_FENSTER, &rec);
  ClientToScreen(&rec);
  pnt.y = rec.bottom - 1;
  pnt.x = rec.left;
  
  // Set up the colours.. Might want these in program options
  COLORREF rgb1(RGB(128, 255, 128));
  COLORREF rgb2(RGB(0, 0, 0));
  COLORREF rgbText(RGB(255, 255, 255));
  COLORREF rgbMText(RGB(0, 0, 90));
  COLORREF rgbMGray = GetSysColor(COLOR_GRAYTEXT);
  COLORREF rgbMBack (RGB(255, 255, 230));
  
  // Create a menu, set the width of gradient
  CGradientMenu oMenu(iGradientWidth, TRUE, iMenuFontHight);
  oMenu.LoadMenu(IDR_FENSTER);
 
  oMenu.AppendMenu (MFT_SEPARATOR, 0, "");
  for (i = 0; i < iImgCnt; i++)
  {
   flags = MF_STRING | MF_ENABLED;
   if (i == iImgAct)
     flags |= MF_CHECKED;
   *bff = 0;
   if (pImgDoc[i] != NULL)
   {
     pDoc = (CMyDoc*)pImgDoc[i];
     pos = pDoc->GetFirstViewPosition();
     pView = (CMyView*)pDoc->GetNextView(pos);
     pFrame = pView->GetParentFrame ();
     pFrame->GetWindowText (bff, sizeof (bff));
   }
   sprintf (buf, "%d %s", i + 1, bff);
   oMenu.AppendMenu (flags, AFX_IDM_FIRST_MDICHILD + i, buf);
  }
  
  // Select colours and set the title for the 1st menu
  // sub menus will take the name of the item selected in the parent.
  oMenu.SetGradientColors(rgb1, rgb2, rgbText);
  oMenu.SetMenuColors(rgbMText, rgbMGray, rgbMBack);
  oMenu.SetTitle((CString)IDString (IDS_MB_FENSTER));
  
  // Show the menu!
  oMenu.TrackPopupMenu(0, pnt.x, pnt.y, this);
}
]

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