Re: writing to gui from thread

From:

"Alexander" <the44secs@yahoo.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

21 Feb 2007 02:43:11 -0800

Message-ID:

<1172054591.049637.41310@a75g2000cwd.googlegroups.com>

Post a message to the gui. It is a thread, after all, it should not
stop to interact with the gui.

On Feb 21, 4:44 pm, "Jinny King" <jinnyk...@126.com> wrote:

I think that the AfxGetMainWnd() in the thread cause the asserttion. Beca=

use

the main window associated with the thread maybe different with the
application main window. you can use AfxGetApp()->m_pMainWnd to instead of
the AfxGetMainWnd().

"kunal s patel" <kunalspa...@discussions.microsoft.com> =D0=B4=C8=EB=CF=

=FB=CF=A2=D0 =CE=C5:009D9EA4-71B6-4DFB-91F7-9A18E3609...@microsoft.com...

Hi all,
Here is a part of code:

#include "maindlg.h"

UINT MyThread(LPVOID obj); //thread function definition
class Cmaindlg
{
//this is the class of main gui with a listbox
CListbox m_listbox;
};

#include "sim.h"
#include "maindlg.h"

class sim
{
  //another file
  void proc(); //this function access the gui
  void run();
}

Now when someone press a button in maindlg application i spawn a thread
like this:

UINT MyThread(LPVOID obj)
{
   sim s;
   s.proc();
}

The function proc is defined as

void sim::proc()
{
  Cmaindlg* pmain = (Cmaindlg*) AfxGetMainWnd();
  pmain->m_listbox.AddString("Hi");
}

Now when i try to run this application, i get an assertion error. I am =

not

able to understand what is going wrong. Can anyone explain me the way o=

of
it. Basically i want to access the gui objects from thread.

thanks
kunal- Hide quoted text -

- Show quoted text -