Solved

Disabling close button on CMDIChildWnd

Posted on 1998-02-17
2
383 Views
Last Modified: 2013-11-20
I am writing a MDI application that has multiple document templates.  On start up, there is one document type that I want to open and not let the user close/destroy.  I want to disable the close button (X) in the corner of the CMDIChildWnd.  I have seen how to use PreCreateWindow to change the style for the minimize and maximize controls;  but I haven't figured out how to disable the close.

0
Comment
Question by:dembowskis
[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 15

Accepted Solution

by:
Tommy Hui earned 100 total points
ID: 1316306
You'll need to catch the WM_SYSCOMMAND and check wParam parameter. If
  if ((wp & SC_CLOSE) == SC_CLOSE)
  {
    // ignore
  }
  else
  {
    // call base class
  }


0
 

Author Comment

by:dembowskis
ID: 1316307
Well, that wasn't exactly the answer I was looking for.  But it was enough of a hint that I got going in the right direction. And since you saved me a lot of time, I graded it high.

Your response would ignore the SC_CLOSE, but my question was how do I -DISABLE- the close button.  Researching the information on WM_SYSCOMMAND and SC_CLOSE got me on the GetSysMenu method and the following solution, which I placed in the OnActivateMdiFrame:

CMenu *lwSysMenu = GetSystemMenu( FALSE );
lwSysMenu->EnableMenuItem( SC_CLOSE, MF_BYCOMMAND | MF_GRAYED );

Thank you!!

0

Featured Post

[Webinar] Learn How Hackers Steal Your Credentials

Do You Know How Hackers Steal Your Credentials? Join us and Skyport Systems to learn how hackers steal your credentials and why Active Directory must be secure to stop them. Thursday, July 13, 2017 10:00 A.M. PDT

Question has a verified solution.

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

Here is how to use MFC's automatic Radio Button handling in your dialog boxes and forms.  Beginner programmers usually start with a OnClick handler for each radio button and that's just not the right way to go.  MFC has a very cool system for handli…
Introduction: Ownerdraw of the grid button.  A singleton class implentation and usage. Continuing from the fifth article about sudoku.   Open the project in visual studio. Go to the class view – CGridButton should be visible as a class.  R…
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, viewers are given an introduction to using the Windows 10 Snipping Tool, how to quickly locate it when it's needed and also how make it always available with a single click of a mouse button, by pinning it to the Desktop Task Bar. Int…

630 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