VC Multiple MRU Menu issues

Q: I imagine DevStudio97 to separate the MRU submenus for different document types, such as breaking into the most recent workspace and the most recently opened file. I looked for it on the CodeGuru, but I didn't get anything.

A: This can be solved. I've kept the CRecentFileList object, let the MFC framework manage the default document type, and then added a handle to the second document type, and I'm going to go step-by-step through the problem:

Using custom menu IDs, such as Id_file_mru_myfile1, you should also add Id_file_mru_myfile2, Id_file_mru_myfile3, ... in the string table. id_file_mru_myfile##

2. To add a new member to the Application class: Crecentfilelist* m_precentlistmyfiles;
4. In the initialization InitInstance () Add the following code:

   M_precentlistmyfiles =new crecentfilelist (5, "My recent File List", "myfile%d", 5);

   M_precentlistmyfiles->readlist ();

6. In ExitInstance () add m_precentlistmyfiles->writelist ();
8. Add the UI processing Update_command_ui:m_precentlistmyfiles->updatemenu (pCmdUI) to the Id_file_mru_myfile1;
10. Add the following code to the application message map: On_command_ex_range (Id_file_mru_myfile1, Id_file_mru_myfile##,onopenrecentmyfile)
12. The following is the handler function for the above message: BOOL cmyapp::onopenrecentmyfile (UINT NID)
{
int nindex = nid-id_file_mru_myfile1;
　　if (OpenDocumentFile (*m_precentlistmyfiles) [nindex]) = = NULL)
M_precentlistmyfiles->remove (nindex);
return TRUE;
}
14. Overloaded cwinapp::addtorecentfilelist () void Ck2App::AddToRecentFileList(LPCTSTR lpszPathName)
　　{
　　// Somehow determine doc type, I used file extension
　　CString strExt;
　　CString strPathName = lpszPathName;
　　int nPos = strPathName.ReverseFind( '.' );
　　if ( nPos != -1 )
　　　　　　strExt = strPathName.Mid( nPos + 1 );
　　if ( strExt.CompareNoCase( "XXX" ) == 0 )
　　　　{
　　　　if (m_pRecentListMyFiles!= NULL)
　　　　　 {
　　　　　　　　// fully qualify the path name
　　　　　　　　TCHAR szTemp[_MAX_PATH];
　　　　　　　　AfxFullPath(szTemp, lpszPathName);
　　　　　　　　// then add to recent file list
　　　　　　　　m_pRecentListMyFiles->Add(szTemp);
　　　　　　}
　　　　}
　　　　else　　// Otherwise, let base class put it on default MRU
　　　　　　CWinApp::AddToRecentFileList(lpszPathName);
　　}
16. And, of course, don't forget to delete M_precentlistmyfiles in the application's destructor.