C++ wxList::DeleteObject方法代码示例

void wxDialog::SetModal(bool flag)
{
   if ( flag )
       wxModelessWindows.DeleteObject(this);
   else
       wxModelessWindows.Append(this);
}

void wxDialogBase::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
{
    // We'll send a Cancel message by default, which may close the dialog.

    // Check for looping if the Cancel event handler calls Close().
    //
    // VZ: this is horrible and MT-unsafe. Can't we reuse some of these global
    //     lists here? don't dare to change it now, but should be done later!
    static wxList closing;

    if ( closing.Member(this) )
        return;

    closing.Append(this);

    // When a previously hidden (necessarily modeless) dialog is being closed,
    // we must not perform the usual validation and data transfer steps as they
    // had been already done when it was hidden and doing it again now would be
    // unexpected and could result in e.g. the dialog asking for confirmation
    // before discarding the changes being shown again, which doesn't make
    // sense as the dialog is not being closed in response to any user action.
    if ( !IsShown() || !SendCloseButtonClickEvent() )
    {
        // If the handler didn't close the dialog (e.g. because there is no
        // button with matching id) we still want to close it when the user
        // clicks the "x" button in the title bar, otherwise we shouldn't even
        // have put it there.
        //
        // Notice that using wxID_CLOSE might have been a better choice but we
        // use wxID_CANCEL for compatibility reasons.
        EndDialog(wxID_CANCEL);
    }

    closing.DeleteObject(this);
}

void wxDialogBase::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
{
    // We'll send a Cancel message by default, which may close the dialog.

    // Check for looping if the Cancel event handler calls Close().
    //
    // VZ: this is horrible and MT-unsafe. Can't we reuse some of these global
    //     lists here? don't dare to change it now, but should be done later!
    static wxList closing;

    if ( closing.Member(this) )
        return;

    closing.Append(this);

    if ( !SendCloseButtonClickEvent() )
    {
        // If the handler didn't close the dialog (e.g. because there is no
        // button with matching id) we still want to close it when the user
        // clicks the "x" button in the title bar, otherwise we shouldn't even
        // have put it there.
        //
        // Notice that using wxID_CLOSE might have been a better choice but we
        // use wxID_CANCEL for compatibility reasons.
        EndDialog(wxID_CANCEL);
    }

    closing.DeleteObject(this);
}

void wxDialogBase::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
{
    // We'll send a Cancel message by default, which may close the dialog.
    // Check for looping if the Cancel event handler calls Close().

    // Note that if a cancel button and handler aren't present in the dialog,
    // nothing will happen when you close the dialog via the window manager, or
    // via Close(). We wouldn't want to destroy the dialog by default, since
    // the dialog may have been created on the stack. However, this does mean
    // that calling dialog->Close() won't delete the dialog unless the handler
    // for wxID_CANCEL does so. So use Destroy() if you want to be sure to
    // destroy the dialog. The default OnCancel (above) simply ends a modal
    // dialog, and hides a modeless dialog.

    int idCancel = GetEscapeId();
    if ( idCancel == wxID_NONE )
        return;
    if ( idCancel == wxID_ANY )
        idCancel = wxID_CANCEL;

    // VZ: this is horrible and MT-unsafe. Can't we reuse some of these global
    //     lists here? don't dare to change it now, but should be done later!
    static wxList closing;

    if ( closing.Member(this) )
        return;

    closing.Append(this);

    wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, idCancel);
    cancelEvent.SetEventObject( this );
    GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog

    closing.DeleteObject(this);
}

bool wxDialog::Show(bool show)
{
    if ( !wxDialogBase::Show(show) )
    {
        // nothing to do
        return FALSE;
    }

    if ( show )
    {
        // usually will result in TransferDataToWindow() being called
        InitDialog();
    }

    if ( IsModal() )
    {
        if ( show )
        {
            DoShowModal();
        }
        else // end of modal dialog
        {
            // this will cause IsModalShowing() return FALSE and our local
            // message loop will terminate
            wxModalDialogs.DeleteObject(this);
        }
    }

    return TRUE;
}

void wxTopLevelWindowMotif::PreDestroy()
{
#ifdef __VMS
#pragma message disable codcauunr
#endif
   if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
        wxModelessWindows.DeleteObject(this);
#ifdef __VMS
#pragma message enable codcauunr
#endif

    m_icons.m_icons.Empty();

    DestroyChildren();

    // MessageDialog and FileDialog do not have a client widget
    if( GetClientWidget() )
    {
        XtRemoveEventHandler( (Widget)GetClientWidget(),
                              ButtonPressMask | ButtonReleaseMask |
                              PointerMotionMask | KeyPressMask,
                              False,
                              wxTLWEventHandler,
                              (XtPointer)this );
    }
}

void wxTopLevelWindowMotif::PreDestroy()
{
    wxModelessWindows.DeleteObject(this);

    DestroyChildren();

    // MessageDialog and FileDialog do not have a client widget
    if( GetClientWidget() )
    {
        XtRemoveEventHandler( (Widget)GetClientWidget(),
                              ButtonPressMask | ButtonReleaseMask |
                              PointerMotionMask | KeyPressMask,
                              False,
                              wxTLWEventHandler,
                              (XtPointer)this );
    }
}

MyChild::~MyChild(void)
{
  my_children.DeleteObject(this);
}