]> git.saurik.com Git - wxWidgets.git/blobdiff - src/msw/dcprint.cpp
don't append anything back in DoDeleteOneItem() if the control becomes empty (fixes...
[wxWidgets.git] / src / msw / dcprint.cpp
index 55eac864f758522f44d86ac500c7061122ed3eba..628e6e81b2217364fed0c46add04d756739c6603 100644 (file)
 /////////////////////////////////////////////////////////////////////////////
-// Name:        dcprint.cpp
+// Name:        src/msw/dcprint.cpp
 // Purpose:     wxPrinterDC class
 // Author:      Julian Smart
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$
-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:    wxWindows licence
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "dcprint.h"
-#endif
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
+#if wxUSE_PRINTING_ARCHITECTURE
+
+#include "wx/dcprint.h"
+#include "wx/msw/dcprint.h"
+
 #ifndef WX_PRECOMP
+    #include "wx/msw/wrapcdlg.h"
+    #include "wx/string.h"
+    #include "wx/log.h"
+    #include "wx/window.h"
+    #include "wx/dcmemory.h"
+    #include "wx/math.h"
 #endif
 
-#include "wx/string.h"
-#include "wx/log.h"
-#include "wx/window.h"
 #include "wx/msw/private.h"
-#include "wx/dcprint.h"
-#include "math.h"
 
-#if wxUSE_COMMON_DIALOGS
-#include <commdlg.h>
+#if wxUSE_WXDIB
+    #include "wx/msw/dib.h"
 #endif
 
+#include "wx/printdlg.h"
+#include "wx/msw/printdlg.h"
+
 #ifndef __WIN32__
-#include <print.h>
+    #include <print.h>
 #endif
 
-#if !USE_SHARED_LIBRARY
-IMPLEMENT_CLASS(wxPrinterDC, wxDC)
+// mingw32 defines GDI_ERROR incorrectly
+#if defined(__GNUWIN32__) || !defined(GDI_ERROR)
+    #undef GDI_ERROR
+    #define GDI_ERROR ((int)-1)
 #endif
 
+#if defined(__WXUNIVERSAL__) && wxUSE_POSTSCRIPT_ARCHITECTURE_IN_MSW
+    #define wxUSE_PS_PRINTING 1
+#else
+    #define wxUSE_PS_PRINTING 0
+#endif
+
+// ----------------------------------------------------------------------------
+// wxWin macros
+// ----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxPrinterDCImpl, wxMSWDCImpl)
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxPrinterDC construction
+// ----------------------------------------------------------------------------
+
+#if 0
 // This form is deprecated
-wxPrinterDC::wxPrinterDC(const wxString& driver_name, const wxString& device_name, const wxString& file, bool interactive, int orientation)
+wxPrinterDC::wxPrinterDC(const wxString& driver_name,
+                         const wxString& device_name,
+                         const wxString& file,
+                         bool interactive,
+                         int orientation)
 {
     m_isInteractive = interactive;
-    
-    if (!file.IsNull() && file != "")
+
+    if ( !file.empty() )
         m_printData.SetFilename(file);
-    
+
 #if wxUSE_COMMON_DIALOGS
-    if (interactive)
+    if ( interactive )
     {
         PRINTDLG pd;
-        
+
         pd.lStructSize = sizeof( PRINTDLG );
-        pd.hwndOwner=(HWND) NULL;
-        pd.hDevMode=(HANDLE)NULL;
-        pd.hDevNames=(HANDLE)NULL;
-        pd.Flags=PD_RETURNDC | PD_NOSELECTION | PD_NOPAGENUMS;
-        pd.nFromPage=0;
-        pd.nToPage=0;
-        pd.nMinPage=0;
-        pd.nMaxPage=0;
-        pd.nCopies=1;
-        pd.hInstance=(HINSTANCE)NULL;
-        
-        if ( PrintDlg( &pd ) != 0 )
+        pd.hwndOwner = (HWND) NULL;
+        pd.hDevMode = (HANDLE)NULL;
+        pd.hDevNames = (HANDLE)NULL;
+        pd.Flags = PD_RETURNDC | PD_NOSELECTION | PD_NOPAGENUMS;
+        pd.nFromPage = 0;
+        pd.nToPage = 0;
+        pd.nMinPage = 0;
+        pd.nMaxPage = 0;
+        pd.nCopies = 1;
+        pd.hInstance = (HINSTANCE)NULL;
+
+        m_ok = PrintDlg( &pd ) != 0;
+        if ( m_ok )
         {
             m_hDC = (WXHDC) pd.hDC;
-            m_ok = TRUE;
         }
-        else
-        {
-            m_ok = FALSE;
-            return;
-        }
-        
-        //     m_dontDelete = TRUE;
     }
     else
-#endif
-        if ((!driver_name.IsNull() && driver_name != "") &&
-            (!device_name.IsNull() && device_name != "") &&
-            (!file.IsNull() && file != ""))
+#endif // wxUSE_COMMON_DIALOGS
+    {
+        if ( !driver_name.empty() && !device_name.empty() && !file.empty() )
         {
-            m_hDC = (WXHDC) CreateDC((char *) (const char *) driver_name, (char *) (const char *) device_name, (char *) (const char *) file, NULL);
-            m_ok = m_hDC ? TRUE: FALSE;
+            m_hDC = (WXHDC) CreateDC(driver_name.wx_str(),
+                                     device_name.wx_str(),
+                                     file.fn_str(),
+                                     NULL);
         }
-        else
+        else // we don't have all parameters, ask the user
         {
             wxPrintData printData;
             printData.SetOrientation(orientation);
             m_hDC = wxGetPrinterDC(printData);
-            m_ok = m_hDC ? TRUE: FALSE;
-        }
-        
-        if (m_hDC)
-        {
-            //     int width = GetDeviceCaps(m_hDC, VERTRES);
-            //     int height = GetDeviceCaps(m_hDC, HORZRES);
-            SetMapMode(wxMM_TEXT);
         }
-        SetBrush(*wxBLACK_BRUSH);
-        SetPen(*wxBLACK_PEN);
+
+        m_ok = m_hDC ? true: false;
+
+        // as we created it, we must delete it as well
+        m_bOwnsDC = true;
+    }
+
+    Init();
 }
+#endif
 
-wxPrinterDC::wxPrinterDC(const wxPrintData& printData)
+wxPrinterDCImpl::wxPrinterDCImpl( wxPrinterDC *owner, const wxPrintData& printData ) :
+    wxMSWDCImpl( owner )
 {
     m_printData = printData;
 
-    m_isInteractive = FALSE;
+    m_isInteractive = false;
 
     m_hDC = wxGetPrinterDC(printData);
-    m_ok = (m_hDC != 0);
-    
-    if (m_hDC)
-        SetMapMode(wxMM_TEXT);
-    
-    SetBrush(*wxBLACK_BRUSH);
-    SetPen(*wxBLACK_PEN);
+    m_ok = m_hDC != 0;
+    m_bOwnsDC = true;
+
+    Init();
 }
 
 
-wxPrinterDC::wxPrinterDC(WXHDC theDC)
+wxPrinterDCImpl::wxPrinterDCImpl( wxPrinterDC *owner, WXHDC dc ) :
+    wxMSWDCImpl( owner )
 {
-    m_isInteractive = FALSE;
-    
-    m_hDC = theDC;
-    m_ok = TRUE;
-    if (m_hDC)
+    m_isInteractive = false;
+
+    m_hDC = dc;
+    m_bOwnsDC = true;
+    m_ok = true;
+}
+
+void wxPrinterDCImpl::Init()
+{
+    if ( m_hDC )
     {
         //     int width = GetDeviceCaps(m_hDC, VERTRES);
         //     int height = GetDeviceCaps(m_hDC, HORZRES);
         SetMapMode(wxMM_TEXT);
+
+        SetBrush(*wxBLACK_BRUSH);
+        SetPen(*wxBLACK_PEN);
     }
-    SetBrush(*wxBLACK_BRUSH);
-    SetPen(*wxBLACK_PEN);
 }
 
-wxPrinterDC::~wxPrinterDC(void)
-{
-}
+// ----------------------------------------------------------------------------
+// wxPrinterDCImpl {Start/End}{Page/Doc} methods
+// ----------------------------------------------------------------------------
 
-bool wxPrinterDC::StartDoc(const wxString& message)
+bool wxPrinterDCImpl::StartDoc(const wxString& message)
 {
     DOCINFO docinfo;
     docinfo.cbSize = sizeof(DOCINFO);
-    docinfo.lpszDocName = (const char *)message;
+    docinfo.lpszDocName = message.wx_str();
 
     wxString filename(m_printData.GetFilename());
 
-    if (filename.IsEmpty())
+    if (filename.empty())
         docinfo.lpszOutput = NULL;
     else
-        docinfo.lpszOutput = (const char *) filename;
+        docinfo.lpszOutput = filename.wx_str();
 
-#if defined(__WIN95__)
     docinfo.lpszDatatype = NULL;
     docinfo.fwType = 0;
-#endif
-    
+
     if (!m_hDC)
-        return FALSE;
-    
-    int ret =
-#ifndef __WIN32__
-        ::StartDoc((HDC) m_hDC, &docinfo);
-#else
-#ifdef UNICODE
-    ::StartDocW((HDC) m_hDC, &docinfo);
-#else
-#ifdef __TWIN32__
-    ::StartDoc((HDC) m_hDC, &docinfo);
-#else
-    ::StartDocA((HDC) m_hDC, &docinfo);
-#endif
-#endif
-#endif
-    
-#ifndef __WIN16__
-    if (ret <= 0)
+        return false;
+
+    if ( ::StartDoc(GetHdc(), &docinfo) <= 0 )
     {
-        DWORD lastError = GetLastError();
-        wxLogDebug("wxDC::StartDoc failed with error: %d\n", lastError);
+        wxLogLastError(wxT("StartDoc"));
+        return false;
     }
-#endif
-    
-    return (ret > 0);
+
+    return true;
 }
 
-void wxPrinterDC::EndDoc(void)
+void wxPrinterDCImpl::EndDoc()
 {
     if (m_hDC) ::EndDoc((HDC) m_hDC);
 }
 
-void wxPrinterDC::StartPage(void)
+void wxPrinterDCImpl::StartPage()
 {
     if (m_hDC)
         ::StartPage((HDC) m_hDC);
 }
 
-void wxPrinterDC::EndPage(void)
+void wxPrinterDCImpl::EndPage()
 {
     if (m_hDC)
         ::EndPage((HDC) m_hDC);
 }
 
+
+wxRect wxPrinterDCImpl::GetPaperRect()
+
+{
+    if (!IsOk()) return wxRect(0, 0, 0, 0);
+    int w = ::GetDeviceCaps((HDC) m_hDC, PHYSICALWIDTH);
+    int h = ::GetDeviceCaps((HDC) m_hDC, PHYSICALHEIGHT);
+    int x = -::GetDeviceCaps((HDC) m_hDC, PHYSICALOFFSETX);
+    int y = -::GetDeviceCaps((HDC) m_hDC, PHYSICALOFFSETY);
+    return wxRect(x, y, w, h);
+}
+
+
+#if !wxUSE_PS_PRINTING
+
 // Returns default device and port names
 static bool wxGetDefaultDeviceName(wxString& deviceName, wxString& portName)
 {
-    deviceName = "";
+    deviceName.clear();
 
     LPDEVNAMES  lpDevNames;
-    LPSTR       lpszDriverName;
-    LPSTR       lpszDeviceName;
-    LPSTR       lpszPortName;
-    
+    LPTSTR      lpszDeviceName;
+    LPTSTR      lpszPortName;
+
     PRINTDLG    pd;
 
     // Cygwin has trouble believing PRINTDLG is 66 bytes - thinks it is 68
 #ifdef __GNUWIN32__
+    memset(&pd, 0, 66);
     pd.lStructSize    = 66; // sizeof(PRINTDLG);
 #else
+    memset(&pd, 0, sizeof(PRINTDLG));
     pd.lStructSize    = sizeof(PRINTDLG);
 #endif
 
@@ -232,160 +267,231 @@ static bool wxGetDefaultDeviceName(wxString& deviceName, wxString& portName)
     pd.hDevNames      = NULL; // Ditto
     pd.Flags          = PD_RETURNDEFAULT;
     pd.nCopies        = 1;
-    
+
     if (!PrintDlg((LPPRINTDLG)&pd))
     {
         if ( pd.hDevMode )
             GlobalFree(pd.hDevMode);
         if (pd.hDevNames)
             GlobalFree(pd.hDevNames);
-        
-        return FALSE;
+
+        return false;
     }
-    
+
     if (pd.hDevNames)
     {
         lpDevNames = (LPDEVNAMES)GlobalLock(pd.hDevNames);
-        lpszDriverName = (LPSTR)lpDevNames + lpDevNames->wDriverOffset;
-        lpszDeviceName = (LPSTR)lpDevNames + lpDevNames->wDeviceOffset;
-        lpszPortName   = (LPSTR)lpDevNames + lpDevNames->wOutputOffset;
-        GlobalUnlock(pd.hDevNames);
-        GlobalFree(pd.hDevNames);
-        pd.hDevNames=NULL;
+        lpszDeviceName = (LPTSTR)lpDevNames + lpDevNames->wDeviceOffset;
+        lpszPortName   = (LPTSTR)lpDevNames + lpDevNames->wOutputOffset;
 
         deviceName = lpszDeviceName;
         portName = lpszPortName;
+
+        GlobalUnlock(pd.hDevNames);
+        GlobalFree(pd.hDevNames);
+        pd.hDevNames=NULL;
     }
-    
+
     if (pd.hDevMode)
     {
         GlobalFree(pd.hDevMode);
         pd.hDevMode=NULL;
     }
-    return ( deviceName != "" );
+    return ( !deviceName.empty() );
 }
 
-#if 0
-// This uses defaults, except for orientation, so we should eliminate this function
-// and use the 2nd form (passing wxPrintData) instead.
-WXHDC wxGetPrinterDC(int orientation)
+#endif // !wxUSE_PS_PRINTING
+
+// Gets an HDC for the specified printer configuration
+WXHDC WXDLLEXPORT wxGetPrinterDC(const wxPrintData& printDataConst)
 {
-    HDC         hDC;
-    LPDEVMODE   lpDevMode = NULL;
-    LPDEVNAMES  lpDevNames;
-    LPSTR       lpszDriverName;
-    LPSTR       lpszDeviceName;
-    LPSTR       lpszPortName;
-    
-    PRINTDLG    pd;
-    // __GNUWIN32__ has trouble believing PRINTDLG is 66 bytes - thinks it is 68
-#ifdef __GNUWIN32__
-    pd.lStructSize    = 66; // sizeof(PRINTDLG);
-#else
-    pd.lStructSize    = sizeof(PRINTDLG);
-#endif
-    pd.hwndOwner      = (HWND)NULL;
-    pd.hDevMode       = NULL; // Will be created by PrintDlg
-    pd.hDevNames      = NULL; // Ditto
-    pd.Flags          = PD_RETURNDEFAULT;
-    pd.nCopies        = 1;
-    
-    if (!PrintDlg((LPPRINTDLG)&pd))
+#if wxUSE_PS_PRINTING
+    // TODO
+    wxUnusedVar(printDataConst);
+    return 0;
+#else // native Windows printing
+    wxWindowsPrintNativeData *data =
+        (wxWindowsPrintNativeData *) printDataConst.GetNativeData();
+
+    data->TransferFrom( printDataConst );
+
+    wxString deviceName = printDataConst.GetPrinterName();
+    if ( deviceName.empty() )
     {
-        if ( pd.hDevMode )
-            GlobalFree(pd.hDevMode);
-        if (pd.hDevNames)
-            GlobalFree(pd.hDevNames);
-        
-        return(0);
+        // Retrieve the default device name
+        wxString portName;
+        if ( !wxGetDefaultDeviceName(deviceName, portName) )
+        {
+            return 0; // Could not get default device name
+        }
     }
-    
-    if (!pd.hDevNames)
+
+
+    HGLOBAL hDevMode = (HGLOBAL)(DWORD) data->GetDevMode();
+
+    DEVMODE *lpDevMode = hDevMode ? (DEVMODE *)::GlobalLock(hDevMode) : NULL;
+
+    HDC hDC = ::CreateDC(NULL, deviceName.wx_str(), NULL, lpDevMode);
+    if ( !hDC )
+        wxLogLastError(_T("CreateDC(printer)"));
+
+    if ( lpDevMode )
+        ::GlobalUnlock(hDevMode);
+
+    return (WXHDC) hDC;
+#endif // PostScript/Windows printing
+}
+
+// ----------------------------------------------------------------------------
+// wxPrinterDCImpl bit blitting/bitmap drawing
+// ----------------------------------------------------------------------------
+
+// helper of DoDrawBitmap() and DoBlit()
+static
+bool DrawBitmapUsingStretchDIBits(HDC hdc,
+                                  const wxBitmap& bmp,
+                                  wxCoord x, wxCoord y)
+{
+#if wxUSE_WXDIB
+    wxDIB dib(bmp);
+    bool ok = dib.IsOk();
+    if ( !ok )
+        return false;
+
+    DIBSECTION ds;
+    if ( !::GetObject(dib.GetHandle(), sizeof(ds), &ds) )
     {
-        if ( pd.hDevMode )
-            GlobalFree(pd.hDevMode);
+        wxLogLastError(_T("GetObject(DIBSECTION)"));
+
+        return false;
     }
-    
-    lpDevNames = (LPDEVNAMES)GlobalLock(pd.hDevNames);
-    lpszDriverName = (LPSTR)lpDevNames + lpDevNames->wDriverOffset;
-    lpszDeviceName = (LPSTR)lpDevNames + lpDevNames->wDeviceOffset;
-    lpszPortName   = (LPSTR)lpDevNames + lpDevNames->wOutputOffset;
-    GlobalUnlock(pd.hDevNames);
-    
-    if ( pd.hDevMode )
+
+    // ok, we've got all data we need, do blit it
+    if ( ::StretchDIBits
+            (
+                hdc,
+                x, y,
+                ds.dsBmih.biWidth, ds.dsBmih.biHeight,
+                0, 0,
+                ds.dsBmih.biWidth, ds.dsBmih.biHeight,
+                ds.dsBm.bmBits,
+                (LPBITMAPINFO)&ds.dsBmih,
+                DIB_RGB_COLORS,
+                SRCCOPY
+            ) == GDI_ERROR )
     {
-        lpDevMode = (DEVMODE*) GlobalLock(pd.hDevMode);
-        lpDevMode->dmOrientation = orientation;
-        lpDevMode->dmFields |= DM_ORIENTATION;
+        wxLogLastError(wxT("StretchDIBits"));
+
+        return false;
     }
-    
-#ifdef __WIN32__
-    hDC = CreateDC(lpszDriverName, lpszDeviceName, lpszPortName, (DEVMODE *)lpDevMode);
+
+    return true;
 #else
-    hDC = CreateDC(lpszDriverName, lpszDeviceName, lpszPortName, (LPSTR)lpDevMode);
+    return false;
 #endif
-    
-    if (pd.hDevMode && lpDevMode)
-        GlobalUnlock(pd.hDevMode);
-    
-    if (pd.hDevNames)
-    {
-        GlobalFree(pd.hDevNames);
-        pd.hDevNames=NULL;
-    }
-    if (pd.hDevMode)
-    {
-        GlobalFree(pd.hDevMode);
-        pd.hDevMode=NULL;
-    }
-    return (WXHDC) hDC;
 }
-#endif
 
-// Gets an HDC for the specified printer configuration
-WXHDC WXDLLEXPORT wxGetPrinterDC(const wxPrintData& printDataConst)
+void wxPrinterDCImpl::DoDrawBitmap(const wxBitmap& bmp,
+                               wxCoord x, wxCoord y,
+                               bool useMask)
 {
-    wxPrintData printData = printDataConst;
-    printData.ConvertToNative();
-    
-    char* driverName = (char*) NULL;
-    
-    wxString devNameStr = printData.GetPrinterName();
-    char* deviceName;
-    char* portName = (char*) NULL; // Obsolete in WIN32
-    
-    if (devNameStr == "")
-        deviceName = (char*) NULL;
-    else
-        deviceName = (char*) (const char*) devNameStr;
+    wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxPrinterDC::DrawBitmap") );
 
-    LPDEVMODE lpDevMode = (LPDEVMODE) NULL;
+    int width = bmp.GetWidth(),
+        height = bmp.GetHeight();
 
-    HGLOBAL hDevMode = (HGLOBAL) printData.GetNativeData();
+    if ( !(::GetDeviceCaps(GetHdc(), RASTERCAPS) & RC_STRETCHDIB) ||
+            !DrawBitmapUsingStretchDIBits(GetHdc(), bmp, x, y) )
+    {
+        // no support for StretchDIBits() or an error occurred if we got here
+        wxMemoryDC memDC;
 
-    if ( hDevMode )
-        lpDevMode = (DEVMODE*) GlobalLock(hDevMode);
+        memDC.SelectObjectAsSource(bmp);
 
-    if (devNameStr == "")
-    {
-        // Retrieve the default device name
-        wxString portName;
-        bool ret = wxGetDefaultDeviceName(devNameStr, portName);
+        GetOwner()->Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask);
 
-        wxASSERT_MSG( ret, "Could not get default device name." );
+        memDC.SelectObject(wxNullBitmap);
+    }
+}
 
-        deviceName = (char*) (const char*) devNameStr;
+bool wxPrinterDCImpl::DoBlit(wxCoord xdest, wxCoord ydest,
+                         wxCoord width, wxCoord height,
+                         wxDC *source,
+                         wxCoord WXUNUSED(xsrc), wxCoord WXUNUSED(ysrc),
+                         int WXUNUSED(rop), bool useMask,
+                         wxCoord WXUNUSED(xsrcMask), wxCoord WXUNUSED(ysrcMask))
+{
+    wxDCImpl *impl = source->GetImpl();
+    wxMSWDCImpl *msw_impl = wxDynamicCast(impl, wxMSWDCImpl);
+    if (!msw_impl)
+        return false;
+
+    wxBitmap& bmp = msw_impl->GetSelectedBitmap();
+    wxMask *mask = useMask ? bmp.GetMask() : NULL;
+    if ( mask )
+    {
+        // If we are printing source colours are screen colours not printer
+        // colours and so we need copy the bitmap pixel by pixel.
+        RECT rect;
+        HDC dcSrc = GetHdcOf(*msw_impl);
+        MemoryHDC dcMask(dcSrc);
+        SelectInHDC selectMask(dcMask, (HBITMAP)mask->GetMaskBitmap());
+
+        for (int x = 0; x < width; x++)
+        {
+            for (int y = 0; y < height; y++)
+            {
+                COLORREF cref = ::GetPixel(dcMask, x, y);
+                if (cref)
+                {
+                    HBRUSH brush = ::CreateSolidBrush(::GetPixel(dcSrc, x, y));
+                    rect.left = xdest + x;
+                    rect.right = rect.left + 1;
+                    rect.top = ydest + y;
+                    rect.bottom = rect.top + 1;
+                    ::FillRect(GetHdc(), &rect, brush);
+                    ::DeleteObject(brush);
+                }
+            }
+        }
     }
-    
-#ifdef __WIN32__
-    HDC hDC = CreateDC(driverName, deviceName, portName, (DEVMODE *) lpDevMode);
-#else
-    HDC hDC = CreateDC(driverName, deviceName, portName, (LPSTR) lpDevMode);
-#endif
-    
-    if (hDevMode && lpDevMode)
-        GlobalUnlock(hDevMode);
-    
-    return (WXHDC) hDC;
+    else // no mask
+    {
+        if ( !(::GetDeviceCaps(GetHdc(), RASTERCAPS) & RC_STRETCHDIB) ||
+                !DrawBitmapUsingStretchDIBits(GetHdc(), bmp, xdest, ydest) )
+        {
+            // no support for StretchDIBits
+
+            // as we are printing, source colours are screen colours not
+            // printer colours and so we need copy the bitmap pixel by pixel.
+            HDC dcSrc = GetHdcOf(*msw_impl);
+            RECT rect;
+            for (int y = 0; y < height; y++)
+            {
+                // optimization: draw identical adjacent pixels together.
+                for (int x = 0; x < width; x++)
+                {
+                    COLORREF col = ::GetPixel(dcSrc, x, y);
+                    HBRUSH brush = ::CreateSolidBrush( col );
+
+                    rect.left = xdest + x;
+                    rect.top = ydest + y;
+                    while( (x + 1 < width) &&
+                                (::GetPixel(dcSrc, x + 1, y) == col ) )
+                    {
+                        ++x;
+                    }
+                    rect.right = xdest + x + 1;
+                    rect.bottom = rect.top + 1;
+                    ::FillRect((HDC) m_hDC, &rect, brush);
+                    ::DeleteObject(brush);
+                }
+            }
+        }
+    }
+
+    return true;
 }
 
+#endif
+    // wxUSE_PRINTING_ARCHITECTURE