Re: Progress Dialog Box

From:

"AliR $VC++ MVP$" <AliR@online.nospam>

Newsgroups:

microsoft.public.vc.mfc

Date:

Fri, 23 Mar 2007 16:28:25 GMT

Message-ID:

<JeTMh.18059$uo3.11330@newssvr14.news.prodigy.net>

Well you forgot to show the window. And that while loop after AfxBeginThread
is messing you up.

How about this?
UINT DownloadFunction(LPVOID lParam)
{
   CProgressDlgDlg *pDlg = (CProgressDlgDlg *)lParam;

   pDlg->EnableWindow(FALSE);
   pDlg->m_Dlg.ShowWindow(SW_SHOW);
   pDlg->m_Dlg.m_ProgressBar.SetRange(0,100);

   for (int i = 0; i < 100;i++)
   {
      pDlg->m_Dlg.m_ProgressBar.StepIt();
      Sleep(100);
   }

   pDlg->m_Dlg.ShowWindow(SW_HIDE);
   pDlg->EnableWindow(TRUE);

   return 1;
}

void CProgressDlgDlg::OnBnClickedButton1()
{
   if (m_Dlg.GetSafeHwnd() == NULL)
   {
      m_Dlg.Create(CProgressDialog::IDD,this);
   }
   AfxBeginThread(DownloadFunction,this);
}

AliR.

<vani.sathya@gmail.com> wrote in message
news:1174641668.869197.171650@l75g2000hse.googlegroups.com...

Hi All,

  I'm very new to VC++ , MFC programming. I have a Button in a
property page. On clicking this button i want a "Progress Dialog Box"
to pop up and run as a seperate thread. The problem is i'm not able to
see the "Progress Dialog Box" and the application goes to hang state.
Please help.

Here's the part of the code..

********** In the property page*******************

void FlashDlg::OnDownloadButton()
{

abort_flag = FALSE;
thread_finished_flag = FALSE;

cpd.Create( );

CWinThread * dl_thread = AfxBeginThread(::DownLoadFunction, this);//
Start downloading thread

while (thread_finished_flag == FALSE)
if (cpd.CheckCancelButton()) abort_flag = TRUE;

AfxMessageBox(result_str);

}

UINT DownLoadFunction(LPVOID lParam)
{
FlashDlg * p = (FlashDlg *)lParam;

p->cpd.SetUpper(25);

for(int i=0 ; i < 25 ; i=i+2)
{
p->cpd.SetPos(i);
Sleep(100);
}
p->thread_finished_flag = TRUE;
return 0;
}

***************** In the ProgressDialog*****************

BOOL CProgressDlg::Create(CWnd *pParent)
{
   // Get the true parent of the dialog

   m_pParentWnd = CWnd::GetSafeOwner(pParent);

   if((m_pParentWnd!=NULL) && m_pParentWnd->IsWindowEnabled())
   {
     m_pParentWnd->EnableWindow(FALSE);
     m_bParentDisabled = TRUE;
   }

   if(!CDialog::Create(CProgressDlg::IDD,pParent))
   {
     ReEnableParent();
     return FALSE;
   }

   return TRUE;
}