Solved

how to prevent a mdi child from closing?

Posted on 2001-06-14
8
388 Views
Last Modified: 2013-11-20
how to prevent a mdi child from closig? i have tried disable the WS_SYSMENU but a chlid can still be closed by ctrl-f4.

thanks.
0
Comment
Question by:bunwong
  • 3
  • 2
  • 2
  • +1
8 Comments
 
LVL 42

Expert Comment

by:sedgwick
ID: 6190868
u mean alt+F4, not Ctrl+F4

0
 
LVL 2

Accepted Solution

by:
MadYugoslav earned 100 total points
ID: 6190881
Override mesage handler for message WM_CLOSE.
0
 
LVL 6

Expert Comment

by:MichaelS
ID: 6190895
Set CS_NOCLOSE window style for you child window
0
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!

 
LVL 42

Expert Comment

by:sedgwick
ID: 6190913
override WindowProc() as follow:
LRESULT WindowProc(
  UINT uMsg,      // message identifier
  WPARAM wParam,  // first message parameter
  LPARAM lParam   // second message parameter
);



LRESULT CDynamicControlsDlg::WindowProc(UINT uMsg,
WPARAM wParam,LPARAM lParam)
{
     if(uMsg == WM_CLOSE)
          return 0;

     return CDialog::WindowProc(uMsg,wParam,lParam);
}

good luck
0
 
LVL 42

Expert Comment

by:sedgwick
ID: 6190926
sorry, for child frame its should look like this:
LRESULT CChildFrame::WindowProc(UINT uMsg,
WPARAM wParam,LPARAM lParam)
{
    if(uMsg == WM_CLOSE)
         return 0;

    return CMDIChildWnd::WindowProc(uMsg,wParam,lParam);
}

btw, when u press ALT+F4 the main frame receives the WM_CLOSE and shut down the application so u need to take this under consideration
0
 

Author Comment

by:bunwong
ID: 6190939
it works, i am amazed how simple it is. thanks MadYugoslav
0
 
LVL 2

Expert Comment

by:MadYugoslav
ID: 6190948
Thanks.
0
 
LVL 6

Expert Comment

by:MichaelS
ID: 6190974
>it works
yep, it works but how :)
user see the close button, press it and nothing happens. or even better, user can do nothing, no minimize, no maximaze.

The solution I proposed allows you to have close button but it's disabled and from that point it's clear that window can't be closed
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone 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
Login Script to Copy Folders 12 47
repeatEnd java challenge 42 85
difference between String.subString() and String.subSequence() 6 273
mapAB Challlenge 35 174
Introduction: Finishing the grid – keyboard support for arrow keys to manoeuvre, entering the numbers.  The PreTranslateMessage function is to be used to intercept and respond to keyboard events. Continuing from the fourth article about sudoku. …
Have you tried to learn about Unicode, UTF-8, and multibyte text encoding and all the articles are just too "academic" or too technical? This article aims to make the whole topic easy for just about anyone to understand.
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.
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial

726 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