Solved

MFC Modeless Dialog Problem

Posted on 1997-12-03
11
463 Views
Last Modified: 2008-02-01
In the InitInstance of my app I create a modal dialog, close it, then create a modeless dialog box.  This worked when built using static mfc but when I switched the project to shared MFC and using run time library multithreaded dll, I receive an access violation in the second initdialog.  A getitem for a clistctrl is failing.
0
Comment
Question by:richp
11 Comments
 
LVL 11

Expert Comment

by:alexo
ID: 1174721
The source code might help.
0
 

Author Comment

by:richp
ID: 1174722
CCommonLogin login(m_pMainWnd,login_name,server_name);
if (login.DoModal()!=IDOK)
    return FALSE;

mktSetManager = new CMarketSetManager;
mktSetManager->Create(IDD_MARKETSET_DIALOG, m_pMainWnd);

0
 
LVL 15

Expert Comment

by:Tommy Hui
ID: 1174723
Where in your source code did you get the access violation?
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!

 

Author Comment

by:richp
ID: 1174724
In the InitDialog of the Create(IDD_MARKETSET...
I have a CListCtrl in the dialog and a GetItem fails.
0
 
LVL 2

Expert Comment

by:AlFa
ID: 1174725
In the InitDialog of CMarketSetManager you've to call CDialog::OnInitDialog() before triing to access a control either by a control variable or GetDlgItem.
0
 

Author Comment

by:richp
ID: 1174726
This is already being done...

BOOL CMarketSetManager::OnInitDialog()
{
      CDialog::OnInitDialog();

.....

0
 
LVL 2

Expert Comment

by:anichini
ID: 1174727
Where in InitInstance is the dialog code called? Are you sure that m_pMainWnd has a valid window handle at that point?
0
 

Author Comment

by:richp
ID: 1174728
The first dialog is called after the:
      CMainFrame* pMainFrame = new CMainFrame;

      if (!pMainFrame->LoadFrame(IDR_MAINFRAME))
            return FALSE;
      m_pMainWnd = pMainFrame;

m_pMainWnd has a valid pointer after that.

0
 
LVL 2

Expert Comment

by:AlFa
ID: 1174729
So OnInitDialog() is called before dialog is physiqualy created try to put initialisation in OnShowWindow ( with a flag to ensure one shot).

0
 

Author Comment

by:richp
ID: 1174730
The problem was a bad text pointer and length in the GetItem.


0
 
LVL 10

Accepted Solution

by:
RONSLOW earned 200 total points
ID: 1174731
Please remove this question now that you have answered it (can you submit you own answer?)

Alternatively, reduce the value of the question to 0 points so other experts don't waste thier time reading all this only to discover that you've answered the question yourself.

Thanks

0

Featured Post

Independent Software Vendors: 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

Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
Written by John Humphreys C++ Threading and the POSIX Library This article will cover the basic information that you need to know in order to make use of the POSIX threading library available for C and C++ on UNIX and most Linux systems.   [s…
The goal of the video will be to teach the user the concept of local variables and scope. An example of a locally defined variable will be given as well as an explanation of what scope is in C++. The local variable and concept of scope will be relat…
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.

679 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