src/msw/ownerdrw.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        msw/ownerdrw.cpp
// Purpose:     implementation of wxOwnerDrawn class
// Author:      Vadim Zeitlin
// Modified by:
// Created:     13.11.97
// RCS-ID:      $Id$
// Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence:     wxWindows license
///////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/msw/private.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
  #include "wx/window.h"
  #include "wx/msw/private.h"
  #include "wx/font.h"
  #include "wx/bitmap.h"
  #include "wx/dcmemory.h"
  #include "wx/menu.h"
  #include "wx/utils.h"
#endif

#include "wx/settings.h"
#include "wx/ownerdrw.h"
#include "wx/menuitem.h"
#include "wx/fontutil.h"

#if wxUSE_OWNER_DRAWN


// ============================================================================
// implementation of wxOwnerDrawn class
// ============================================================================

// ctor
// ----
wxOwnerDrawn::wxOwnerDrawn(const wxString& str,
                           bool bCheckable, bool WXUNUSED(bMenuItem))
            : m_strName(str)
{
#if defined(__WXMSW__) && defined(__WIN32__) && defined(SM_CXMENUCHECK)
    // get the default menu height and font from the system
    NONCLIENTMETRICS nm;
    nm.cbSize = sizeof (NONCLIENTMETRICS);
    SystemParametersInfo (SPI_GETNONCLIENTMETRICS,0,&nm,0);
    m_nMinHeight = nm.iMenuHeight;

    // nm.iMenuWidth is the system default for the width of
    // menu icons and checkmarks
    if (ms_nDefaultMarginWidth == 0)
    {
       ms_nDefaultMarginWidth = nm.iMenuWidth;
       ms_nLastMarginWidth = nm.iMenuWidth;
    }

    wxNativeFontInfo info;
    memcpy(&info.lf, &nm.lfMenuFont, sizeof(LOGFONT));
    m_font.Create(info);
#else
    // windows clean install default
    m_nMinHeight = 18;

    if (ms_nDefaultMarginWidth == 0)
    {
        ms_nDefaultMarginWidth = 18;
        ms_nLastMarginWidth = 18;
    }
    if (wxNORMAL_FONT)
       m_font = *wxNORMAL_FONT;
#endif

    m_bCheckable   = bCheckable;
    m_bOwnerDrawn  = FALSE;
    m_nHeight      = 0;
    m_nMarginWidth = ms_nLastMarginWidth;
}


// these items will be set during the first invocation of the c'tor,
// because the values will be determined by checking the system settings,
// which is a chunk of code
size_t wxOwnerDrawn::ms_nDefaultMarginWidth = 0;
size_t wxOwnerDrawn::ms_nLastMarginWidth = 0;


// drawing
// -------

// get size of the item
bool wxOwnerDrawn::OnMeasureItem(size_t *pwidth, size_t *pheight)
{
  wxMemoryDC dc;

  wxString str = wxStripMenuCodes(m_strName);

  // # without this menu items look too tightly packed (at least under Windows)
  str += wxT('W'); // 'W' is typically the widest letter

  if (m_font.Ok())
      dc.SetFont(GetFont());

  dc.GetTextExtent(str, (long *)pwidth, (long *)pheight);

  if (!m_strAccel.IsEmpty())
  {
      // measure the accelerator string, and add it's width to
      // the total item width, plus 16 (Accelerators are right justified,
      // with the right edge of the text rectangle 16 pixels left of
      // the right edge of the menu)

      int accel_width, accel_height;
      dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);
      *pwidth += (accel_width + 16);
  }

  // JACS: items still look too tightly packed, so adding 5 pixels.
  (*pheight) = (*pheight) + 5;

  // Ray Gilbert's changes - Corrects the problem of a BMP
  // being placed next to text in a menu item, and the BMP does
  // not match the size expected by the system.  This will
  // resize the space so the BMP will fit.  Without this, BMPs
  // must be no larger or smaller than 16x16.
  if (m_bmpChecked.Ok())
  {
      // Is BMP height larger then text height?
      size_t adjustedHeight = m_bmpChecked.GetHeight() +
                              wxSystemSettings::GetMetric(wxSYS_EDGE_Y);
      if (*pheight < adjustedHeight)
          *pheight = adjustedHeight;

      // Does BMP encroach on default check menu position?
      size_t adjustedWidth = m_bmpChecked.GetWidth() +
                             (wxSystemSettings::GetMetric(wxSYS_EDGE_X) * 2);
      if (ms_nDefaultMarginWidth < adjustedWidth)
          *pwidth += adjustedWidth - ms_nDefaultMarginWidth;

      // Do we need to widen margin to fit BMP?
      if ((size_t)GetMarginWidth() < adjustedWidth)
          SetMarginWidth(adjustedWidth);
  }

  // make sure that this item is at least as
  // tall as the user's system settings specify
  if (*pheight < m_nMinHeight)
    *pheight = m_nMinHeight;

  m_nHeight = *pheight;                // remember height for use in OnDrawItem

  return TRUE;
}

// searching for this macro you'll find all the code where I'm using the native
// Win32 GDI functions and not wxWindows ones. Might help to whoever decides to
// port this code to X. (VZ)

// JACS: TODO. Why does a disabled but highlighted item still
// get drawn embossed? How can we tell DrawState that we don't want the
// embossing?

#if defined(__WIN32__) && !defined(__SC__) && !defined(__TWIN32__)
#define   O_DRAW_NATIVE_API     // comments below explain why I use it
#endif

// draw the item
bool wxOwnerDrawn::OnDrawItem(wxDC& dc,
                              const wxRect& rc,
                              wxODAction act,
                              wxODStatus st)
{
  // we do nothing on focus change
  if ( act == wxODFocusChanged )
    return TRUE;

  // wxColor <-> RGB
  #define   ToRGB(col)  PALETTERGB(col.Red(), col.Green(), col.Blue())
  #define   UnRGB(col)  GetRValue(col), GetGValue(col), GetBValue(col)

  // set the colors
  // --------------
  DWORD colBack, colText;
  if ( st & wxODSelected ) {
    colBack = GetSysColor(COLOR_HIGHLIGHT);
    if (!(st & wxODDisabled))
    {
        colText = GetSysColor(COLOR_HIGHLIGHTTEXT);
    }
     else
    {
        colText = GetSysColor(COLOR_GRAYTEXT);
    }
  }
  else {
    // fall back to default colors if none explicitly specified
    colBack = m_colBack.Ok() ? ToRGB(m_colBack) : GetSysColor(COLOR_WINDOW);
    colText = m_colText.Ok() ? ToRGB(m_colText) : GetSysColor(COLOR_WINDOWTEXT);
  }

  #ifdef  O_DRAW_NATIVE_API
    #define  hdc           (HDC)dc.GetHDC()
    COLORREF colOldText = ::SetTextColor(hdc, colText),
             colOldBack = ::SetBkColor(hdc, colBack);
  #else
    dc.SetTextForeground(wxColor(UnRGB(colText)));
    dc.SetTextBackground(wxColor(UnRGB(colBack)));
  #endif

  // select the font and draw the text
  // ---------------------------------


  // determine where to draw and leave space for a check-mark.
  // Add 3 pixel padding so text appears well within highlight rectangle
  int x = rc.x + GetMarginWidth() + 3;


  // using native API because it reckognizes '&'
  #ifdef  O_DRAW_NATIVE_API
    int nPrevMode = SetBkMode(hdc, TRANSPARENT);
    HBRUSH hbr = CreateSolidBrush(colBack),
           hPrevBrush = (HBRUSH)SelectObject(hdc, hbr);

    RECT rectFill = { rc.GetLeft(), rc.GetTop(), rc.GetRight()+1, rc.GetBottom() };

    if ( st & wxODSelected && m_bmpChecked.Ok()) {
        // only draw the highlight under the text, not under
        // the bitmap or checkmark; leave a 1-pixel gap.
        rectFill.left = GetMarginWidth() + 1;
    }

    FillRect(hdc, &rectFill, hbr);

    DeleteObject(hbr);

    // use default font if no font set
    HFONT hfont;
    if ( m_font.Ok() ) {
      m_font.RealizeResource();
      hfont = (HFONT)m_font.GetResourceHandle();
    }
    else {
      hfont = (HFONT)::GetStockObject(SYSTEM_FONT);
    }

    HFONT hPrevFont = (HFONT) ::SelectObject(hdc, hfont);

    wxString strMenuText = m_strName.BeforeFirst('\t');

    ::DrawState(hdc, NULL, NULL,
                (LPARAM)strMenuText.c_str(), strMenuText.length(),
                x, rc.y + 1, rc.GetWidth(), rc.GetHeight(),
                DST_PREFIXTEXT |
                (((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));

    if ( !m_strAccel.empty() )
    {
        int accel_width, accel_height;
        dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);

        ::DrawState(hdc, NULL, NULL,
                    (LPARAM)m_strAccel.c_str(), m_strAccel.length(),
                    rc.GetRight() - accel_width - 16, rc.y + 1, 0, 0,
                    DST_TEXT |
                    (((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
    }

    (void)SelectObject(hdc, hPrevBrush);
    (void)SelectObject(hdc, hPrevFont);
    (void)SetBkMode(hdc, nPrevMode);
  #else
    dc.SetFont(GetFont());
    dc.DrawText(wxStripMenuCodes(m_strName), x, rc.y);
  #endif  //O_DRAW_NATIVE_API

  // draw the bitmap
  // ---------------
  if ( IsCheckable() && !m_bmpChecked.Ok() ) {
    if ( st & wxODChecked ) {
      // using native APIs for performance and simplicity
#ifdef  O_DRAW_NATIVE_API
      // what goes on: DrawFrameControl creates a b/w mask,
      // then we copy it to screen to have right colors

        // first create a monochrome bitmap in a memory DC
      HDC hdcMem = CreateCompatibleDC(hdc);
      HBITMAP hbmpCheck = CreateBitmap(GetMarginWidth(), m_nHeight, 1, 1, 0);
      SelectObject(hdcMem, hbmpCheck);

        // then draw a check mark into it
      RECT rect = { 0, 0, GetMarginWidth(), m_nHeight };
      if ( m_nHeight > 0 )
      {
        ::DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
      }

        // finally copy it to screen DC and clean up
      BitBlt(hdc, rc.x, rc.y, GetMarginWidth(), m_nHeight,
             hdcMem, 0, 0, SRCCOPY);

      DeleteDC(hdcMem);
      DeleteObject(hbmpCheck);
#else
        // #### to do: perhaps using Marlett font (create equiv. font under X)
//        wxFAIL("not implemented");
#endif  //O_DRAW_NATIVE_API
    }
  }
  else {
    // for uncheckable item we use only the 'checked' bitmap
    wxBitmap bmp(GetBitmap(IsCheckable() ? ((st & wxODChecked) != 0) : TRUE));
    if ( bmp.Ok() ) {
      wxMemoryDC dcMem(&dc);
      dcMem.SelectObject(bmp);

      // center bitmap
      int nBmpWidth = bmp.GetWidth(),
          nBmpHeight = bmp.GetHeight();

      // there should be enough place!
      wxASSERT((nBmpWidth <= rc.GetWidth()) && (nBmpHeight <= rc.GetHeight()));

      int heightDiff = m_nHeight - nBmpHeight;
      dc.Blit(rc.x + (GetMarginWidth() - nBmpWidth) / 2,
              rc.y + heightDiff / 2,
              nBmpWidth, nBmpHeight,
              &dcMem, 0, 0, wxCOPY, TRUE /* use mask */);

      if ( st & wxODSelected ) {

          int x1, y1, x2, y2;
          x1 = rc.x;
          y1 = rc.y;
          x2 = x1 + GetMarginWidth() - 1;
          y2 = y1 + m_nHeight - 1;

          dc.SetPen(*wxWHITE_PEN);
          dc.DrawLine(x1, y1, x2, y1);
          dc.DrawLine(x1, y1, x1, y2);
          dc.SetPen(*wxGREY_PEN);
          dc.DrawLine(x1, y2-1, x2, y2-1);
          dc.DrawLine(x2, y1, x2, y2);
      }
    }
  }

  #ifdef  O_DRAW_NATIVE_API
    ::SetTextColor(hdc, colOldText);
    ::SetBkColor(hdc, colOldBack);

    #undef  hdc
  #endif  //O_DRAW_NATIVE_API

  return TRUE;
}


#endif // wxUSE_OWNER_DRAWN
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: msw/ownerdrw.cpp
	3	// Purpose: implementation of wxOwnerDrawn class
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 13.11.97
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
	9	// Licence: wxWindows license
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation
	14	#endif
	15
	16	// For compilers that support precompilation, includes "wx.h".
	17	#include "wx/wxprec.h"
	18	#include "wx/msw/private.h"
	19
	20	#ifdef __BORLANDC__
	21	#pragma hdrstop
	22	#endif
	23
	24	#ifndef WX_PRECOMP
	25	#include "wx/window.h"
	26	#include "wx/msw/private.h"
	27	#include "wx/font.h"
	28	#include "wx/bitmap.h"
	29	#include "wx/dcmemory.h"
	30	#include "wx/menu.h"
	31	#include "wx/utils.h"
	32	#endif
	33
	34	#include "wx/settings.h"
	35	#include "wx/ownerdrw.h"
	36	#include "wx/menuitem.h"
	37	#include "wx/fontutil.h"
	38
	39	#if wxUSE_OWNER_DRAWN
	40
	41
	42	// ============================================================================
	43	// implementation of wxOwnerDrawn class
	44	// ============================================================================
	45
	46	// ctor
	47	// ----
	48	wxOwnerDrawn::wxOwnerDrawn(const wxString& str,
	49	bool bCheckable, bool WXUNUSED(bMenuItem))
	50	: m_strName(str)
	51	{
	52	#if defined(__WXMSW__) && defined(__WIN32__) && defined(SM_CXMENUCHECK)
	53	// get the default menu height and font from the system
	54	NONCLIENTMETRICS nm;
	55	nm.cbSize = sizeof (NONCLIENTMETRICS);
	56	SystemParametersInfo (SPI_GETNONCLIENTMETRICS,0,&nm,0);
	57	m_nMinHeight = nm.iMenuHeight;
	58
	59	// nm.iMenuWidth is the system default for the width of
	60	// menu icons and checkmarks
	61	if (ms_nDefaultMarginWidth == 0)
	62	{
	63	ms_nDefaultMarginWidth = nm.iMenuWidth;
	64	ms_nLastMarginWidth = nm.iMenuWidth;
	65	}
	66
	67	wxNativeFontInfo info;
	68	memcpy(&info.lf, &nm.lfMenuFont, sizeof(LOGFONT));
	69	m_font.Create(info);
	70	#else
	71	// windows clean install default
	72	m_nMinHeight = 18;
	73
	74	if (ms_nDefaultMarginWidth == 0)
	75	{
	76	ms_nDefaultMarginWidth = 18;
	77	ms_nLastMarginWidth = 18;
	78	}
	79	if (wxNORMAL_FONT)
	80	m_font = *wxNORMAL_FONT;
	81	#endif
	82
	83	m_bCheckable = bCheckable;
	84	m_bOwnerDrawn = FALSE;
	85	m_nHeight = 0;
	86	m_nMarginWidth = ms_nLastMarginWidth;
	87	}
	88
	89
	90	// these items will be set during the first invocation of the c'tor,
	91	// because the values will be determined by checking the system settings,
	92	// which is a chunk of code
	93	size_t wxOwnerDrawn::ms_nDefaultMarginWidth = 0;
	94	size_t wxOwnerDrawn::ms_nLastMarginWidth = 0;
	95
	96
	97	// drawing
	98	// -------
	99
	100	// get size of the item
	101	bool wxOwnerDrawn::OnMeasureItem(size_t pwidth, size_t pheight)
	102	{
	103	wxMemoryDC dc;
	104
	105	wxString str = wxStripMenuCodes(m_strName);
	106
	107	// # without this menu items look too tightly packed (at least under Windows)
	108	str += wxT('W'); // 'W' is typically the widest letter
	109
	110	if (m_font.Ok())
	111	dc.SetFont(GetFont());
	112
	113	dc.GetTextExtent(str, (long )pwidth, (long )pheight);
	114
	115	if (!m_strAccel.IsEmpty())
	116	{
	117	// measure the accelerator string, and add it's width to
	118	// the total item width, plus 16 (Accelerators are right justified,
	119	// with the right edge of the text rectangle 16 pixels left of
	120	// the right edge of the menu)
	121
	122	int accel_width, accel_height;
	123	dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);
	124	*pwidth += (accel_width + 16);
	125	}
	126
	127	// JACS: items still look too tightly packed, so adding 5 pixels.
	128	(pheight) = (pheight) + 5;
	129
	130	// Ray Gilbert's changes - Corrects the problem of a BMP
	131	// being placed next to text in a menu item, and the BMP does
	132	// not match the size expected by the system. This will
	133	// resize the space so the BMP will fit. Without this, BMPs
	134	// must be no larger or smaller than 16x16.
	135	if (m_bmpChecked.Ok())
	136	{
	137	// Is BMP height larger then text height?
	138	size_t adjustedHeight = m_bmpChecked.GetHeight() +
	139	wxSystemSettings::GetMetric(wxSYS_EDGE_Y);
	140	if (*pheight < adjustedHeight)
	141	*pheight = adjustedHeight;
	142
	143	// Does BMP encroach on default check menu position?
	144	size_t adjustedWidth = m_bmpChecked.GetWidth() +
	145	(wxSystemSettings::GetMetric(wxSYS_EDGE_X) * 2);
	146	if (ms_nDefaultMarginWidth < adjustedWidth)
	147	*pwidth += adjustedWidth - ms_nDefaultMarginWidth;
	148
	149	// Do we need to widen margin to fit BMP?
	150	if ((size_t)GetMarginWidth() < adjustedWidth)
	151	SetMarginWidth(adjustedWidth);
	152	}
	153
	154	// make sure that this item is at least as
	155	// tall as the user's system settings specify
	156	if (*pheight < m_nMinHeight)
	157	*pheight = m_nMinHeight;
	158
	159	m_nHeight = *pheight; // remember height for use in OnDrawItem
	160
	161	return TRUE;
	162	}
	163
	164	// searching for this macro you'll find all the code where I'm using the native
	165	// Win32 GDI functions and not wxWindows ones. Might help to whoever decides to
	166	// port this code to X. (VZ)
	167
	168	// JACS: TODO. Why does a disabled but highlighted item still
	169	// get drawn embossed? How can we tell DrawState that we don't want the
	170	// embossing?
	171
	172	#if defined(__WIN32__) && !defined(__SC__) && !defined(__TWIN32__)
	173	#define O_DRAW_NATIVE_API // comments below explain why I use it
	174	#endif
	175
	176	// draw the item
	177	bool wxOwnerDrawn::OnDrawItem(wxDC& dc,
	178	const wxRect& rc,
	179	wxODAction act,
	180	wxODStatus st)
	181	{
	182	// we do nothing on focus change
	183	if ( act == wxODFocusChanged )
	184	return TRUE;
	185
	186	// wxColor <-> RGB
	187	#define ToRGB(col) PALETTERGB(col.Red(), col.Green(), col.Blue())
	188	#define UnRGB(col) GetRValue(col), GetGValue(col), GetBValue(col)
	189
	190	// set the colors
	191	// --------------
	192	DWORD colBack, colText;
	193	if ( st & wxODSelected ) {
	194	colBack = GetSysColor(COLOR_HIGHLIGHT);
	195	if (!(st & wxODDisabled))
	196	{
	197	colText = GetSysColor(COLOR_HIGHLIGHTTEXT);
	198	}
	199	else
	200	{
	201	colText = GetSysColor(COLOR_GRAYTEXT);
	202	}
	203	}
	204	else {
	205	// fall back to default colors if none explicitly specified
	206	colBack = m_colBack.Ok() ? ToRGB(m_colBack) : GetSysColor(COLOR_WINDOW);
	207	colText = m_colText.Ok() ? ToRGB(m_colText) : GetSysColor(COLOR_WINDOWTEXT);
	208	}
	209
	210	#ifdef O_DRAW_NATIVE_API
	211	#define hdc (HDC)dc.GetHDC()
	212	COLORREF colOldText = ::SetTextColor(hdc, colText),
	213	colOldBack = ::SetBkColor(hdc, colBack);
	214	#else
	215	dc.SetTextForeground(wxColor(UnRGB(colText)));
	216	dc.SetTextBackground(wxColor(UnRGB(colBack)));
	217	#endif
	218
	219	// select the font and draw the text
	220	// ---------------------------------
	221
	222
	223	// determine where to draw and leave space for a check-mark.
	224	// Add 3 pixel padding so text appears well within highlight rectangle
	225	int x = rc.x + GetMarginWidth() + 3;
	226
	227
	228	// using native API because it reckognizes '&'
	229	#ifdef O_DRAW_NATIVE_API
	230	int nPrevMode = SetBkMode(hdc, TRANSPARENT);
	231	HBRUSH hbr = CreateSolidBrush(colBack),
	232	hPrevBrush = (HBRUSH)SelectObject(hdc, hbr);
	233
	234	RECT rectFill = { rc.GetLeft(), rc.GetTop(), rc.GetRight()+1, rc.GetBottom() };
	235
	236	if ( st & wxODSelected && m_bmpChecked.Ok()) {
	237	// only draw the highlight under the text, not under
	238	// the bitmap or checkmark; leave a 1-pixel gap.
	239	rectFill.left = GetMarginWidth() + 1;
	240	}
	241
	242	FillRect(hdc, &rectFill, hbr);
	243
	244	DeleteObject(hbr);
	245
	246	// use default font if no font set
	247	HFONT hfont;
	248	if ( m_font.Ok() ) {
	249	m_font.RealizeResource();
	250	hfont = (HFONT)m_font.GetResourceHandle();
	251	}
	252	else {
	253	hfont = (HFONT)::GetStockObject(SYSTEM_FONT);
	254	}
	255
	256	HFONT hPrevFont = (HFONT) ::SelectObject(hdc, hfont);
	257
	258	wxString strMenuText = m_strName.BeforeFirst('\t');
	259
	260	::DrawState(hdc, NULL, NULL,
	261	(LPARAM)strMenuText.c_str(), strMenuText.length(),
	262	x, rc.y + 1, rc.GetWidth(), rc.GetHeight(),
	263	DST_PREFIXTEXT \|
	264	(((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
	265
	266	if ( !m_strAccel.empty() )
	267	{
	268	int accel_width, accel_height;
	269	dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);
	270
	271	::DrawState(hdc, NULL, NULL,
	272	(LPARAM)m_strAccel.c_str(), m_strAccel.length(),
	273	rc.GetRight() - accel_width - 16, rc.y + 1, 0, 0,
	274	DST_TEXT \|
	275	(((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
	276	}
	277
	278	(void)SelectObject(hdc, hPrevBrush);
	279	(void)SelectObject(hdc, hPrevFont);
	280	(void)SetBkMode(hdc, nPrevMode);
	281	#else
	282	dc.SetFont(GetFont());
	283	dc.DrawText(wxStripMenuCodes(m_strName), x, rc.y);
	284	#endif //O_DRAW_NATIVE_API
	285
	286	// draw the bitmap
	287	// ---------------
	288	if ( IsCheckable() && !m_bmpChecked.Ok() ) {
	289	if ( st & wxODChecked ) {
	290	// using native APIs for performance and simplicity
	291	#ifdef O_DRAW_NATIVE_API
	292	// what goes on: DrawFrameControl creates a b/w mask,
	293	// then we copy it to screen to have right colors
	294
	295	// first create a monochrome bitmap in a memory DC
	296	HDC hdcMem = CreateCompatibleDC(hdc);
	297	HBITMAP hbmpCheck = CreateBitmap(GetMarginWidth(), m_nHeight, 1, 1, 0);
	298	SelectObject(hdcMem, hbmpCheck);
	299
	300	// then draw a check mark into it
	301	RECT rect = { 0, 0, GetMarginWidth(), m_nHeight };
	302	if ( m_nHeight > 0 )
	303	{
	304	::DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
	305	}
	306
	307	// finally copy it to screen DC and clean up
	308	BitBlt(hdc, rc.x, rc.y, GetMarginWidth(), m_nHeight,
	309	hdcMem, 0, 0, SRCCOPY);
	310
	311	DeleteDC(hdcMem);
	312	DeleteObject(hbmpCheck);
	313	#else
	314	// #### to do: perhaps using Marlett font (create equiv. font under X)
	315	// wxFAIL("not implemented");
	316	#endif //O_DRAW_NATIVE_API
	317	}
	318	}
	319	else {
	320	// for uncheckable item we use only the 'checked' bitmap
	321	wxBitmap bmp(GetBitmap(IsCheckable() ? ((st & wxODChecked) != 0) : TRUE));
	322	if ( bmp.Ok() ) {
	323	wxMemoryDC dcMem(&dc);
	324	dcMem.SelectObject(bmp);
	325
	326	// center bitmap
	327	int nBmpWidth = bmp.GetWidth(),
	328	nBmpHeight = bmp.GetHeight();
	329
	330	// there should be enough place!
	331	wxASSERT((nBmpWidth <= rc.GetWidth()) && (nBmpHeight <= rc.GetHeight()));
	332
	333	int heightDiff = m_nHeight - nBmpHeight;
	334	dc.Blit(rc.x + (GetMarginWidth() - nBmpWidth) / 2,
	335	rc.y + heightDiff / 2,
	336	nBmpWidth, nBmpHeight,
	337	&dcMem, 0, 0, wxCOPY, TRUE /* use mask */);
	338
	339	if ( st & wxODSelected ) {
	340
	341	int x1, y1, x2, y2;
	342	x1 = rc.x;
	343	y1 = rc.y;
	344	x2 = x1 + GetMarginWidth() - 1;
	345	y2 = y1 + m_nHeight - 1;
	346
	347	dc.SetPen(*wxWHITE_PEN);
	348	dc.DrawLine(x1, y1, x2, y1);
	349	dc.DrawLine(x1, y1, x1, y2);
	350	dc.SetPen(*wxGREY_PEN);
	351	dc.DrawLine(x1, y2-1, x2, y2-1);
	352	dc.DrawLine(x2, y1, x2, y2);
	353	}
	354	}
	355	}
	356
	357	#ifdef O_DRAW_NATIVE_API
	358	::SetTextColor(hdc, colOldText);
	359	::SetBkColor(hdc, colOldBack);
	360
	361	#undef hdc
	362	#endif //O_DRAW_NATIVE_API
	363
	364	return TRUE;
	365	}
	366
	367
	368	#endif // wxUSE_OWNER_DRAWN
	369