Window is not closing by clicking close icon in dialog in VC++

Question

0.00/5 (No votes)

See more:

C++

Hi, can somebody tell why the window is not closing by clicking close icon in title bar?

Posted 13-Apr-11 1:42am

bunathangaraj

Add a Solution

3 solutions

Solution 3

There are a few ways to close windows:
1) Modal dialog: handle WM_CLOSE or WM_COMMAND and close the window by calling EndDialog.
2) Modeless windows (popup or overlapped) handle the WM_CLOSE message by DestroyWindow.
3) Application windows: handle the WM_CLOSE or any command by DestroyWindow and handle the WM_DESTROY by PostQuitMessage to end the message loop.
Regards.

Posted 14-Apr-11 5:03am

mbue

Solution 2

Probably because the message handler is missing for the dialog.

Have a look here:
Windows Message Handling - Part 1[^]

Good luck!

Posted 13-Apr-11 1:46am

E.F. Nijboer

Comments

Hans Dietrich 13-Apr-11 7:55am

If the message map entry or message handler is missing, it would be passed to default handler, which would close it.

E.F. Nijboer 13-Apr-11 8:11am

Correct, there is a message handler but this prevents the dialog from closing because the WM_CLOSE isn't handled properly.

Hans Dietrich 13-Apr-11 8:13am

Exactly, which is what I said in my Solution 1.

Sergey Alexandrovich Kryukov 13-Apr-11 8:31am

For MFC? Right, my 5.
--SA

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Hans Dietrich · Accepted Answer · 2011-04-13T01:45:00

Solution 1

You have overridden WM_CLOSE (or Onclose) and prevent the default message handling.

Posted 13-Apr-11 1:45am

Hans Dietrich

Comments

Sergey Alexandrovich Kryukov 13-Apr-11 8:31am

And this advice can be used even for raw Windows code, my 5.
Teamwork!
--SA

Albert Holguin 13-Apr-11 10:26am

another thing that may cause this is overriding message handling methods (that affect all messages instead of just WM_CLOSE).... good answer though, my 5