?
Solved

Disable ALT-F4

Posted on 1998-12-21
2
Medium Priority
?
343 Views
Last Modified: 2013-11-20
I have a full screen application which I would like to prevent exiting using ALT-F4.  How do I disable ALT-F4 from exiting my program?  The program is derived from CDialog and was written using MSVC 5.0.

Thanks for the help.
0
Comment
Question by:oblong
[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
2 Comments
 
LVL 6

Accepted Solution

by:
thresher_shark earned 600 total points
ID: 1326541
To disable the ALT-F4 key combination, you want to override the OnClose member function of your application.  To do this, do the following:
1) Open Class Wizard
2) Override the WM_CLOSE message
3) Leave the function blank.  i.e. replace:
   void CMyDlg::OnClose ()
   { CDialog::OnClose (); }
   
   with

   void CMyDlg::OnClose ()
   { }

The ALT-F4 combination sends a WM_CLOSE message which is not acted upon with the blank function.  Note that this will also disable the use of double clicking the system menu since ALT-F4 and double clicking it are essentially the same thing.  Make sure you provide an alternative means for your program to exit though!  If you have any further questions on any of the above, please feel free to ask.  Thanks!
0
 

Author Comment

by:oblong
ID: 1326542
Thank you very much thresher.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

This is to be the first in a series of articles demonstrating the development of a complete windows based application using the MFC classes.  I’ll try to keep each article focused on one (or a couple) of the tasks that one may meet.   Introductio…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
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.
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
Suggested Courses
Course of the Month15 days, 4 hours left to enroll

770 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