> BOOL IsListBoxOwnerDraw();
> // Generated message map functions
>protected:
> //{{AFX_MSG(CTitleTip)
> afx_msg void OnPaint();
> //}}AFX_MSG
> DECLARE_MESSAGE_MAP()
>};
>/////////////////////////////////////////////////////////////////////////////
>// TitleTip.cpp : implementation file //
>#include "stdafx.h"
>#include "TitleTip.h"
>#ifdef _DEBUG
>#define new DEBUG_NEW
>#undef THIS_FILE
>static char THIS_FILE[] = __FILE__;
>#endif
>/////////////////////////////////////////////////////////////////////////////
>// CTitleTip
>LPCSTR CTitleTip::m_pszWndClass = NULL;
>CTitleTip::CTitleTip() : m_nNoIndex(-1) {
> // Зарегистрировать класс окна, если он еще не зарегистрирован
> // другим экземпляром CTitleTip.
> if (m_pszWndClass == NULL) {
> m_pszWndClass = AfxRegisterWndClass(CS_SAVEBITS | CS_HREDRAW | CS_VREDRAW);
> }
> m_nItemIndex = m_nNoIndex;
> m_pListBox = NULL;
>}
>CTitleTip::~CTitleTip() { }
>BOOL CTitleTip::Create(CListBox* pParentWnd) {
> ASSERT_VALID(pParentWnd);
> m_pListBox = pParentWnd;
> // Не рисовать рамку для обычных элементов "список", так как
> // строки с пользовательской отрисовкой добавляют рамку автоматически.
> DWORD dwStyle = WS_POPUP;
> if (!IsListBoxOwnerDraw()) {
> dwStyle |= WS_BORDER;
> }
> return CreateEx(0, m_pszWndClass, NULL, dwStyle, 0, 0, 0, 0, pParentWnd->GetSafeHwnd(), NULL, NULL);
>}
>BOOL CTitleTip::IsListBoxOwnerDraw() {
> ASSERT_VALID(m_pListBox);
> DWORD dwStyle = m_pListBox->GetStyle();
> return (dwStyle & LBS_OWNERDRAWFIXED) || (dwStyle & LBS_OWNERDRAWVARIABLE);
>}
>void CTitleTip::Show(CRect DisplayRect, int nItemIndex) {
> ASSERT_VALID(m_pListBox);
> ASSERT(nItemIndex < m_pListBox->GetCount());
> ASSERT(nItemIndex >= 0);
> ASSERT(::IsWindow(m_hWnd));
> ASSERT(!DisplayRect.IsRectEmpty());
> // Пометить для обновления, если новая строка.
> if (m_nItemIndex != nItemIndex) {
> m_nItemIndex = nItemIndex;
> InvalidateRect(NULL);
> }
> // Установить позицию и видимость окна.
> CRect WindowRect;
> GetWindowRect(WindowRect);
> int nSWPFlags = SWP_SHOWWINDOW | SWP_NOACTIVATE;
> if (WindowRect == DisplayRect) {
> nSWPFlags |= SWP_NOMOVE | SWP_NOSIZE;
> }
> VERIFY(SetWindowPos(&wndTopMost, DisplayRect.left, DisplayRect.top, DisplayRect.Width(), DisplayRect.Height(), nSWPFlags));
>}
>void CTitleTip::Hide() {
> ASSERT(::IsWindow(m_hWnd));
> ShowWindow(SW_HIDE);
>}
>BEGIN_MESSAGE_MAP(CTitleTip, CWnd)
> //{{AFX_MSG_MAP(CTitleTip)
> ON_WM_PAINT()
> //}}AFX_MSG_MAP
>END_MESSAGE_MAP()
>/////////////////////////////////////////////////////////////////////////////
>// CTitleTip message handlers
>void CTitleTip::OnPaint() {
> ASSERT(m_nItemIndex != m_nNoIndex);
> CPaintDC DC(this);
> int nSavedDC = DC.SaveDC();
> CRect ClientRect;
> GetClientRect(ClientRect);
> if (IsListBoxOwnerDraw()) {
> // Доверим рисование элементу "список".
> DRAWITEMSTRUCT DrawItemStruct;
> DrawItemStruct.CtlType = ODT_LISTBOX;
> DrawItemStruct.CtlID = m_pListBox->GetDlgCtrlID();
> DrawItemStruct.itemID = m_nItemIndex;
> DrawItemStruct.itemAction = ODA_DRAWENTIRE;
> DrawItemStruct.hwndItem = m_pListBox->GetSafeHwnd();
> DrawItemStruct.hDC = DC.GetSafeHdc();
> DrawItemStruct.rcItem = ClientRect;
> DrawItemStruct.itemData = m_pListBox->GetItemData(m_nItemIndex);
> DrawItemStruct.itemState = (m_pListBox->GetSel(m_nItemIndex) > 0 ? ODS_SELECTED : 0);
> if (m_pListBox->GetStyle() & LBS_MULTIPLESEL) {
> if (m_pListBox->GetCaretIndex() == m_nItemIndex) {
> DrawItemStruct.itemState |= ODS_FOCUS;
> }
> } else {
> DrawItemStruct.itemState |= ODS_FOCUS;
> }
> m_pListBox->DrawItem(&DrawItemStruct);
> } else {
> // Рисуем самостоятельно
> CFont* pFont = m_pListBox->GetFont();
> ASSERT_VALID(pFont);
> DC.SelectObject(pFont);
> COLORREF clrBackground = RGB(255, 255, 255);
> if (m_pListBox->GetSel(m_nItemIndex) > 0) {
> DC.SetTextColor(::GetSysColor(COLOR_HIGHLIGHTTEXT));
> clrBackground = ::GetSysColor(COLOR_HIGHLIGHT);
> }
> // Рисуем фон
> DC.FillSolidRect(ClientRect, clrBackground);
> // Рисуем текст строки
> CString strItem;
> m_pListBox->GetText(m_nItemIndex, strItem);
> ASSERT(!strItem.IsEmpty());
> DC.SetBkMode(TRANSPARENT);
> DC.TextOut(1, –1, strItem);
> }
> DC.RestoreDC(nSavedDC);
> // Не вызываем CWnd::OnPaint() для сообщений отрисовки
