Solved

modal

Posted on 1998-07-21
5
247 Views
Last Modified: 2013-11-20
I use Visual C++5
 I would like to make my window 's application same modal dialog. when i execeute my application
the other application cann't use till i quit my application.
Please advise me to do it.
thank you
0
Comment
Question by:eakkung
  • 3
5 Comments
 

Author Comment

by:eakkung
ID: 1319480
Edited text of question
0
 
LVL 1

Accepted Solution

by:
atari earned 180 total points
ID: 1319481
Hi, I call your application-class CApplic : CWinApp. Add the following variable to your Applic.h-File:

HANDLE m_hInstanceSem;

Then add the following function to your Applic.cpp-file, there where you find the functions InitInstance() and ExitInstance().

BOOL CApplic::IsFirstInstance()
{
  // Define a global semaphore to see if we are already running an instance
  m_hInstanceSem=CreateSemaphore(NULL,0,1,_T("INSTANCE_CHECK__1"));
  if (!m_hInstanceSem)
      return FALSE;

  if (m_hInstanceSem!=NULL && GetLastError()==ERROR_ALREADY_EXISTS)
  {
    CloseHandle(m_hInstanceSem);
    m_hInstanceSem=NULL;
    return FALSE;
  }
 
  return TRUE;
}

Then in the beginning your InitInstance()-function add the following:
BOOL CApplic::InitInstance()
{
  if (!IsFirstInstance())
  {
     AfxMessageBox("Application is already running ...");
     return FALSE;
  }
 
.   and so on.

Then if you run your program first, the program starts correctly. But if you run your program a second time, the above message appears and the program never starts.

Hope this helps.

Bye,
atari
0
 
LVL 8

Expert Comment

by:trestan
ID: 1319482
Actually I do not understand the question thoroughly. Did he want to make the application can be run only once?
0
 
LVL 1

Expert Comment

by:atari
ID: 1319483
To trestan, it sounds for me like this, or wasn't this the question ?
0
 
LVL 1

Expert Comment

by:atari
ID: 1319484
Can we get any answer from you, eakkung ???

Bye,
atari
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

In this article, I'll describe -- and show pictures of -- some of the significant additions that have been made available to programmers in the MFC Feature Pack for Visual C++ 2008.  These same feature are in the MFC libraries that come with Visual …
Introduction: Dialogs (1) modal - maintaining the database. Continuing from the ninth article about sudoku.   You might have heard of modal and modeless dialogs.  Here with this Sudoku application will we use one of each type: a modal dialog …
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.
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …

863 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

Need Help in Real-Time?

Connect with top rated Experts

27 Experts available now in Live!

Get 1:1 Help Now