C++ wxBookCtrlEvent::GetOldSelection方法代码示例

/// Apply the styles when a different tab is selected, so the previews are
/// up to date
void wxRichTextFormattingDialog::OnTabChanged(wxBookCtrlEvent& event)
{
    if (m_ignoreUpdates)
        return;

    if (GetBookCtrl() != event.GetEventObject())
    {
        event.Skip();
        return;
    }

    int oldPageId = event.GetOldSelection();
    if (oldPageId != -1)
    {
        wxWindow* page = GetBookCtrl()->GetPage(oldPageId);
        if (page)
            page->TransferDataFromWindow();
    }

    int pageId = event.GetSelection();
    if (pageId != -1)
    {
        wxWindow* page = GetBookCtrl()->GetPage(pageId);
        if (page)
            page->TransferDataToWindow();
    }
}

void wxNotebook::OnSelChange(wxBookCtrlEvent& event)
{
    // is it our tab control?
    if ( event.GetEventObject() == this )
        ChangePage(event.GetOldSelection(), event.GetSelection());

    // we want to give others a chance to process this message as well
    event.Skip();
}

void wxNotebook::OnSelChange (
  wxBookCtrlEvent&                  rEvent
)
{
    //
    // Is it our tab control?
    //
    if (rEvent.GetEventObject() == this)
    {
        int   nPageCount = GetPageCount();
        int   nSel;
        ULONG ulOS2Sel = (ULONG)rEvent.GetOldSelection();
        bool  bFound = false;

        for (nSel = 0; nSel < nPageCount; nSel++)
        {
            if (ulOS2Sel == (ULONG)m_alPageId[nSel])
            {
                bFound = true;
                break;
            }
        }

        if (!bFound)
            return;

        m_pages[nSel]->Show(false);

        ulOS2Sel = (ULONG)rEvent.GetSelection();

        bFound = false;

        for (nSel = 0; nSel < nPageCount; nSel++)
        {
            if (ulOS2Sel == (ULONG)m_alPageId[nSel])
            {
                bFound = true;
                break;
            }
        }

        if (!bFound)
            return;

        wxNotebookPage*         pPage = m_pages[nSel];

        pPage->Show(true);
        m_nSelection = nSel;
    }

    //
    // We want to give others a chance to process this message as well
    //
    rEvent.Skip();
} // end of wxNotebook::OnSelChange

void MainFrame::OnPageChanged(wxBookCtrlEvent& event)
{
    event.Skip();
    wxString message;
    message << "Page changed event. Old=" << event.GetOldSelection() << ". New: =" << event.GetSelection();
    m_log->AppendText(message + "\n");
    wxWindow* curpage = m_book->GetCurrentPage();
    int sel = m_book->FindPage(curpage);
    if(sel != event.GetSelection()) {
        wxMessageBox("FATAL ERROR: current page does not match the selection!!",
                     "Notebook Demo",
                     wxICON_ERROR | wxOK | wxCENTER);
    }
}

void clMultiBook::OnEventProxy(wxBookCtrlEvent& event)
{
    if(event.GetEventObject() == this) {
        // Avoid loops
        event.Skip();
        return;
    }
    int selection = event.GetSelection();
    int oldSelection = event.GetOldSelection();

    Notebook* book = dynamic_cast<Notebook*>(event.GetEventObject());
    if(!book) {
        clWARNING() << "clMultiBook::OnEventProxy no notebook event object!";
        return;
    }

    // Convert the event
    wxBookCtrlEvent proxyEvent(event.GetEventType());
    proxyEvent.SetEventObject(this);
    proxyEvent.SetSelection(wxNOT_FOUND);
    proxyEvent.SetOldSelection(wxNOT_FOUND);
    if(selection != wxNOT_FOUND) { proxyEvent.SetSelection(BookIndexToGlobalIndex(book, selection)); }
    if(oldSelection != wxNOT_FOUND) { proxyEvent.SetOldSelection(BookIndexToGlobalIndex(book, oldSelection)); }

    // Process the event
    if((event.GetEventType() == wxEVT_BOOK_TAB_CONTEXT_MENU) || (event.GetEventType() == wxEVT_BOOK_PAGE_CHANGED)) {
        // Use ProcessEvent
        GetEventHandler()->ProcessEvent(proxyEvent);
    } else if((event.GetEventType() == wxEVT_BOOK_PAGE_CLOSING) || (event.GetEventType() == wxEVT_BOOK_PAGE_CHANGING)) {
        // Handle with ProcessEvent with Veto option
        GetEventHandler()->ProcessEvent(proxyEvent);
        if(!proxyEvent.IsAllowed()) { event.Veto(); }
    } else {
        // Handle with AddPendingEvent
        GetEventHandler()->AddPendingEvent(proxyEvent);
        if(event.GetEventType() == wxEVT_BOOK_PAGE_CLOSED) {
            // A page was closed
            CallAfter(&clMultiBook::UpdateView);
        }
    }
}

void wxGenericMDIClientWindow::OnPageChanged(wxBookCtrlEvent& event)
{
    PageChanged(event.GetOldSelection(), event.GetSelection());

    event.Skip();
}

void HClusterDlg::OnNotebookChange(wxBookCtrlEvent& event)
{
    int tab_idx = event.GetOldSelection();
    m_panel->SetActive(tab_idx == 1);
}