I have written an application which puts up a modal dialog
box and prompts the user for some input information.  I
then create a modeless dialog box with a progress bar.  I
then start running some code which can take a long time
to run.  This code sends progress data to the modeless dialog
box to update the progress bar.  This all works fine but
I would like to add an abort button in the modeless dialog.
I have tried this I can't get the abort button to work.  Does
anyone know how to get this to work?  Below is an example of
how I put the application together.

One other thing I noticed is I get the hour glass if I do
not call the modal dialog before calling DriverMain.

Thanks.

  #include "CDriver.h"
  #include "CDriverDlg.h"

  #include "utility.h"

  CDriverApp gcDriverApp;
  CDriverApp *gcpApplication;

  BEGIN_MESSAGE_MAP(CDriverApp, CWinApp)
    ON_COMMAND(ID_HELP, CWinApp::OnHelp)
  END_MESSAGE_MAP()

  CDriverApp::CDriverApp()
  {
    gcpApplication = this;
  }

  BOOL CDriverApp::InitInstance()
  {
    CDriverDlg cDriverDlg;

    cDriverDlg.m_strStartTime = m_strStartTime;
    cDriverDlg.m_strEndTime   = m_strEndTime  ;
    cDriverDlg.m_strFrequency = m_strFrequency;

    if (IDOK == cDriverDlg.DoModal())
    {
      m_strStartTime = cDriverDlg.m_strStartTime;
      m_strEndTime   = cDriverDlg.m_strEndTime  ;
      m_strFrequency = cDriverDlg.m_strFrequency;

      DriverMain();
    }

    return FALSE;
  }

  BOOL CDriverApp::DriverMain()
  {
    CExecuteDlg cDlg;
    cDlg.Create(IDD_EXECUTE);
    cDlg.UpdateWindow();

    for (m_cClock.m_iTimeCounter  = m_cClock.m_iStartCounter;
         m_cClock.m_iTimeCounter <= m_cClock.m_iEndCounter  ;
         m_cClock.m_iTimeCounter++)
    {
      DO SOME STUFF HERE

      INT iTimeRatio = INT(100.0F * (m_fTime / m_fEndTime));

      SendMessage(cDlg.m_hWnd, WM_COMMAND, IDC_UPDATE_TIME,
LPARAM(iTimeRatio));
    }

    cDlg.DestroyWindow();

    return FALSE;
  }

--
Remove the PPP for the correct email address.

You could try setting a global abort flag, testing it after each call to
SendMessage.

Johan Rosengren
Responsable Informatique
PACTA S.A.

I guess I should have stated the Abort button never gets serviced.  That
is the problem.

Neal,

I think that the problem is that your loop is keeping you from processing
any messages (like button clicks).  What you want to do either start a
worker thread to do the processing or check the message pump from time to
time to see if the user has clicked on the abort button or tried to do
something else...  See the code below.

Hope this helps,
Chris

void CheckMessagePump()
{
    MSG msg;

    // Handle all of the messages on the queue.
    while( ::PeekMessage(&msg, NULL, NULL, NULL, PM_REMOVE) )
    {
        ::TranslateMessage(&msg);
        ::DispatchMessage(&msg);
    }

  BOOL CDriverApp::DriverMain()
  {
    CExecuteDlg cDlg;
    cDlg.Create(IDD_EXECUTE);
    cDlg.UpdateWindow();

    for (m_cClock.m_iTimeCounter  = m_cClock.m_iStartCounter;
         m_cClock.m_iTimeCounter <= m_cClock.m_iEndCounter  ;
         m_cClock.m_iTimeCounter++)
    {
      DO SOME STUFF HERE

      INT iTimeRatio = INT(100.0F * (m_fTime / m_fEndTime));

      SendMessage(cDlg.m_hWnd, WM_COMMAND, IDC_UPDATE_TIME,
LPARAM(iTimeRatio));

        // Now check the message pump to handle any messages...
        CheckMessagePump();
    }

    cDlg.DestroyWindow();

    return FALSE;
  }