Disable "close" menu items

Posted on 2002-04-12
Last Modified: 2013-11-20
I have a MDI window applications. Each child window have it's own set of thread and if these thread are running and user close window (by click on the cross button of system menu, or  on menu File_Exit) it may lead to an error cos some my threads are not completly stopped.

How to disable the system menu buttons and File_Exit, I want to avoid user close program until they stop the processing threads ?
Question by:ahTri
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
  • 3

Expert Comment

ID: 6936242
Write the WM_SYSCOMMAND handler in your CChildFrame class and check for SC_CLOSE

In ChildFrm.h add
          // NOTE - the ClassWizard will add and remove member functions here.
          //    DO NOT EDIT what you see in these blocks of generated code!
     afx_msg void OnSysCommand( UINT nID, LPARAM lParam );

In ChildFrm.cpp
          // NOTE - the ClassWizard will add and remove mapping macros here.
          //    DO NOT EDIT what you see in these blocks of generated code !

void CChildFrame::OnSysCommand( UINT nID, LPARAM lParam )
     if(nID == SC_CLOSE )
          //Close button pressed
                //Close your threads or
     CMDIChildWnd::OnSysCommand( nID,lParam );
LVL 49

Accepted Solution

DanRollins earned 50 total points
ID: 6939644
Alternative: disable the button and the menu command:

CMenu *pSysMenu = GetSystemMenu(FALSE);
ASSERT(pSysMenu != NULL);

-- Dan

Author Comment

ID: 6940862
Although manojbkumar's comment gave me a fair bit of useful information , DanRollins' comment is more directly answer my question.


Author Comment

ID: 6943754
Hi DanRollins,

I can get the system menu from CChildFrame, but how to get the system menu from a sub class of CDocument or CView ? Say my classes are CDifarDocument and CDifarView

From CDifarDocument I get the CDifarView, and from CDifarView get the system menu but fail the ASSERT(pSysMenu != NULL);


Author Comment

ID: 6943770
Or how to get the CChildFrame from CDifarDocument or CDifarView ?

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
function returning CString in a regular win32 DLL 8 215
ShiftLeft challenge 21 95
Modbus - whats the maximum I can store in one register? 4 84
Problem to App 4 145
Introduction: Displaying information on the statusbar.   Continuing from the third article about sudoku.   Open the project in visual studio. Status bar – let’s display the timestamp there.  We need to get the timestamp from the document s…
Introduction: Dialogs (1) modal - maintaining the database. Continuing from the ninth article about sudoku.   You might have heard of modal and modeless dialogs.  Here with this Sudoku application will we use one of each type: a modal dialog …
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.
Finding and deleting duplicate (picture) files can be a time consuming task. My wife and I, our three kids and their families all share one dilemma: Managing our pictures. Between desktops, laptops, phones, tablets, and cameras; over the last decade…
Suggested Courses

734 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