Using MRU on submenu

The following contains a method for putting MRU's on a separate submenu.

After studying Todd C. Gleason's method for implementing MRU's on a submenu MRU's, I ended up taking a slightly different approach. Namely, a helper function to handle the application's OnUpdateFileMruFile1(CCmdUI* pCmdUI) function.

CRecentFileList::UpdateMenu() seems to work OK if there's another item on the submenu before the MRU. So we insert such an item, update the menu, and then remove the inserted menu.

The update function seems to be called under various circumstances.
  • m_pMenu != 0 && m_pSubMenu != 0 -- popup menu opened up but not the submenu
    Don't do anything
  • m_pMenu != 0 && m_pSubMenu == 0 -- Opening the submenu
    Fix up then menu
  • m_pMenu == 0 && m_pSubMenu == 0 -- We've clicked on menu
    Don't do anything
//////////////////////////////////////////////////////////////////////
// SubmenuMRU.h
//
#ifndef _SUBMENUMRU_H_
#define _SUBMENUMRU_H_

class SubmenuMRU
{
public:
  static void Handle_OnUpdateFileMruFile1(CCmdUI* pCmdUI, CRecentFileList* pRecentFileList);
};

#endif
//////////////////////////////////////////////////////////////////////
// SubmenuMRU.cpp
//
#include 
#include 

#include "SubmenuMRU.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

void SubmenuMRU::Handle_OnUpdateFileMruFile1(CCmdUI* pCmdUI, CRecentFileList* pRecentFileList)
{
	if (pRecentFileList == NULL) // no MRU files
		pCmdUI->Enable(FALSE);
	else
    {
        if (pCmdUI->m_pMenu && !pCmdUI->m_pSubMenu) // Only do something if we're the submenu
        {
            // Insert a separator so that CRecentFileList::UpdateMenu() will behave
            pCmdUI->m_pMenu->InsertMenu(0, MF_SEPARATOR | MF_BYPOSITION);
            pCmdUI->m_nIndex++;
            pCmdUI->m_nIndexMax++;

            pRecentFileList->UpdateMenu(pCmdUI); // Update the menu

            // Get rid of the separator we just inerted
            pCmdUI->m_pMenu->DeleteMenu(0, MF_BYPOSITION);
            pCmdUI->m_nIndex--;
            pCmdUI->m_nIndexMax--;
        }
    }
}
//////////////////////////////////////////////////////////////////////
// Snippet from test program's MenuTest.rc
//
IDR_MAINFRAME MENU PRELOAD DISCARDABLE 
BEGIN
    POPUP "&File"
    BEGIN
		...
        POPUP "Recent &Files"
        BEGIN
            MENUITEM "Recent File", ID_FILE_MRU_FILE1, GRAYED
        END
        MENUITEM SEPARATOR
        MENUITEM "E&xit", ID_APP_EXIT
    END
	...
END
//////////////////////////////////////////////////////////////////////
// Snippet from test program's MenuTest.cpp
//
#include "SubmenuMRU.h"

BEGIN_MESSAGE_MAP(CMenuTestApp, CWinApp)
	...
	ON_UPDATE_COMMAND_UI(ID_FILE_MRU_FILE1, OnUpdateFileMruFile1)
END_MESSAGE_MAP()


void CMenuTestApp::OnUpdateFileMruFile1(CCmdUI* pCmdUI) 
{
    // TODO: Add your command update UI handler code here
    SubmenuMRU::Handle_OnUpdateFileMruFile1(pCmdUI, m_pRecentFileList);
}



Comments

  • How to delete a item of recent file list?

    Posted by Legacy on 08/21/2001 12:00am

    Originally posted by: Cherry

    When select a file from recent file list.
    But the file wat changed by others and not the format I need.
    So I want to delete this file from recent file list.
    I know add a file is AddToRecentFileList(LPCTSTR lpszPathName), but how to delete one?
    Thank you!

    Reply
Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • If you need new tools and tricks to make your meetings profitable and productive, then 5 Tips in 5 Minutes: A Quick Guide for More Profitable Sales Meetings is for you. Timely, practical tips that you can incorporate in just seconds will save you literally hours in travel and meeting time, not to mention help you to focus on what your sales prospects really want to know and how you can meet their needs. Get 5in5: A Quick Guide for More Profitable Sales Meetings and start building your sales the smarter, faster …

  • Managing your company's financials is the backbone of your business and is vital to the long-term health and viability of your company. To continue applying the necessary financial rigor to support rapid growth, the accounting department needs the right tools to most efficiently do their job. Read this white paper to understand the 10 essentials of a complete financial management system and how the right solution can help you keep up with the rapidly changing business world.

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds