Solved

Dynamic Menu Options

Posted on 1997-02-21
1
332 Views
Last Modified: 2013-11-20
In the following snippet of code I have created a new popup menu and added a couple menu items with AppendMenu().  The popup is then appended to the menu associated with the CFrame window of the program.  The function is called from the OnCreate() message handler of the CView class of the
program:
      
int CSigmaView::OnCreate( LPCREATESTRUCT lpCreateStruct)
{
      ...

      cCWReport.SetRptMenu(this->GetParent());
            
      ...

      return 0;
}

  When the program runs, the top-level menu option "Reports" is apparently created OK because it appears at the end of the menu bar for the frame window. When the new menu option is selected it becomes highlighted and the program appears to hang for a few seconds as though it is processing something but the popup menu never appears and no error is generated.  I have used standard command ID's for the added menu items just for the sake of creating and testing the function.

void CSigmaReport::SetRptMenu(CWnd *pWnd)
{
      CMenu *pMenu;
      CMenu cPopup;

      cPopup.CreatePopupMenu();

      cPopup.AppendMenu(MF_ENABLED|MF_STRING,                           ID_FILE_OPEN, "&Bay Details");
      cPopup.AppendMenu(MF_ENABLED|MF_STRING,                           ID_FILE_OPEN, "&Vac Details");
      pMenu = pWnd->GetMenu();

      pMenu->AppendMenu(MF_POPUP|MF_STRING,                           (UINT)cPopup.GetSafeHmenu(),
                  "&Reports");
      pWnd->DrawMenuBar();
};
0
Comment
Question by:armg
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 23

Accepted Solution

by:
chensu earned 70 total points
ID: 1300304
In your program, cPopup is created on the stack. As soon as it goes out of the function (SetRptMenu) scope, it is destroyed automatically (the destructor CMenu::~CMenu() is called).

You should either put cPopup as a member varible of CSigmaView or allocate it dynamically by using new and delete.

Method 1:
CMenu cPopup; // member varible of CSigmaView

Method 2:
CMenu *pcPopup; // member varible of CSigmaView

pcPopup = new CMenu;
pcPopup->CreatePopupMenu();

void CSigmaView::OnDestroy()
{
    delete pcPopup;
    ...
}

0

Featured Post

On Demand Webinar - Networking for the Cloud Era

This webinar discusses:
-Common barriers companies experience when moving to the cloud
-How SD-WAN changes the way we look at networks
-Best practices customers should employ moving forward with cloud migration
-What happens behind the scenes of SteelConnect’s one-click button

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I'll describe -- and show pictures of -- some of the significant additions that have been made available to programmers in the MFC Feature Pack for Visual C++ 2008.  These same feature are in the MFC libraries that come with Visual …
Introduction: Load and Save to file, Document-View interaction inside the SDI. Continuing from the second article about sudoku.   Open the project in visual studio. From the class view select CSudokuDoc and double click to open the header …
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…
Suggested Courses

617 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question