toplevel code transferred to wxTopLevelWindow

[wxWidgets.git] / src / os2 / dc.cpp

diff --git a/src/os2/dc.cpp b/src/os2/dc.cpp
index 8b435b6b01fcdcdb6230d0e4834b6ea37d1b0c3d..d2fe58841f1c9dcba262546909b3d211028c5526 100644 (file)
--- a/src/os2/dc.cpp
+++ b/src/os2/dc.cpp
@@ -1,489 +1,2314 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        dc.cpp
 // Purpose:     wxDC class
 /////////////////////////////////////////////////////////////////////////////
 // Name:        dc.cpp
 // Purpose:     wxDC class

-// Author:      AUTHOR
+// Author:      David Webster

 // Modified by:
 // Modified by:

-// Created:     01/02/97
+// Created:     10/14/99

 // RCS-ID:      $Id$
 // RCS-ID:      $Id$

-// Copyright:   (c) AUTHOR
-// Licence:    wxWindows licence
+// Copyright:   (c) David Webster
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "dc.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/window.h"
+    #include "wx/dc.h"
+    #include "wx/utils.h"
+    #include "wx/dialog.h"
+    #include "wx/app.h"
+    #include "wx/bitmap.h"
+    #include "wx/dcmemory.h"
+    #include "wx/log.h"
+    #include "wx/icon.h"
+    #include "wx/msgdlg.h"
+    #include "wx/module.h"

 #endif
 
 #endif
 

-#include "wx/dc.h"
+#include "wx/dcprint.h"

 
 

-#if !USE_SHARED_LIBRARY
-IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
-#endif
+#include <string.h>
+#include <math.h>
+
+#include "wx/os2/private.h"
+
+    IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)

 
 

-//-----------------------------------------------------------------------------
+//
+// wxWindows uses the Microsoft convention that the origin is the UPPER left.
+// Native OS/2 however in the GPI and PM define the origin as the LOWER left.
+// In order to map OS/2 GPI/PM y coordinates to wxWindows coordinates we must
+// perform the following transformation:
+//
+// Parent object height:     POBJHEIGHT
+// Desried origin:           WXORIGINY
+// Object to place's height: OBJHEIGHT
+//
+// To get the OS2 position from the wxWindows one:
+//
+// OS2Y = POBJHEIGHT - (WXORIGINY + OBJHEIGHT)
+//
+// For OS/2 wxDC's we will always determine m_vRclPaint as the size of the
+// OS/2 Presentation Space associated with the device context.  y is the
+// desired application's y coordinate of the origin in wxWindows space.
+// objy is the height of the object we are going to draw.
+//
+#define OS2Y(y, objy) ((m_vRclPaint.yTop - m_vRclPaint.yBottom) - (y + objy))
+
+// ---------------------------------------------------------------------------

 // constants
 // constants

-//-----------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+
+static const int VIEWPORT_EXTENT = 1000;

 
 

-#define mm2inches              0.0393700787402
-#define inches2mm              25.4
-#define mm2twips               56.6929133859
-#define twips2mm               0.0176388888889
-#define mm2pt                  2.83464566929
-#define pt2mm                  0.352777777778
+static const int MM_POINTS = 9;
+static const int MM_METRIC = 10;

 
 

-//-----------------------------------------------------------------------------
-// wxDCBase
-//-----------------------------------------------------------------------------
+// usually this is defined in math.h
+#ifndef M_PI
+    static const double M_PI = 3.14159265358979323846;
+#endif // M_PI

 
 

-long wxDCBase::DeviceToLogicalX(long x) const
+// ---------------------------------------------------------------------------
+// private functions
+// ---------------------------------------------------------------------------
+
+// convert degrees to radians
+static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
+
+int SetTextColor(
+  HPS                               hPS
+, int                               nForegroundColour
+)

 {
 {

-    long new_x = x - m_deviceOriginX;
-    if (new_x > 0)
-        return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
-    else
-        return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
-};
+    CHARBUNDLE                      vCbnd;
+
+    vCbnd.lColor =  nForegroundColour;
+    ::GpiSetAttrs( hPS       // presentation-space handle
+                  ,PRIM_CHAR // Char primitive.
+                  ,CBB_COLOR // sets color.
+                  ,0         //
+                  ,&vCbnd    // buffer for attributes.
+                 );
+    return 0;
+}

 
 

-long wxDCBase::DeviceToLogicalY(long y) const
+int QueryTextBkColor(
+  HPS                               hPS
+)

 {
 {

-    long new_y = y - m_deviceOriginY;
-    if (new_y > 0)
-        return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
-    else
-        return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
-};
+    CHARBUNDLE                      vCbnd;
+
+    ::GpiQueryAttrs( hPS            // presentation-space handle
+                    ,PRIM_CHAR      // Char primitive.
+                    ,CBB_BACK_COLOR // Background color.
+                    ,&vCbnd         // buffer for attributes.
+                   );
+    return vCbnd.lBackColor;
+}

 
 

-long wxDCBase::DeviceToLogicalXRel(long x) const
+
+int SetTextBkColor(
+  HPS                               hPS
+, int                               nBackgroundColour
+)

 {
 {

-    if (x > 0)
-        return (long)((double)(x) / m_scaleX + 0.5);
-    else
-        return (long)((double)(x) / m_scaleX - 0.5);
-};
+    CHARBUNDLE                      vCbnd;
+    int                             rc;
+
+    rc =  QueryTextBkColor(hPS);
+
+    vCbnd.lBackColor = nBackgroundColour;
+    ::GpiSetAttrs(hPS,            // presentation-space handle
+                  PRIM_CHAR,      // Char primitive.
+                  CBB_BACK_COLOR, // sets color.
+                  0,
+                  &vCbnd          // buffer for attributes.
+                 );
+    return rc;
+}

 
 

-long wxDCBase::DeviceToLogicalYRel(long y) const
+int SetBkMode(
+  HPS                               hPS
+, int                               nBackgroundMode
+)

 {
 {

-    if (y > 0)
-        return (long)((double)(y) / m_scaleY + 0.5);
+    if(nBackgroundMode == wxTRANSPARENT)
+        ::GpiSetBackMix( hPS
+                        ,BM_LEAVEALONE
+                       );

     else
     else

-        return (long)((double)(y) / m_scaleY - 0.5);
-};
+        // the background of the primitive takes  over whatever is underneath.
+        ::GpiSetBackMix( hPS
+                        ,BM_OVERPAINT
+                        );
+    return 0;
+}
+
+// ===========================================================================
+// implementation
+// ===========================================================================

 
 

-long wxDCBase::LogicalToDeviceX(long x) const
+#if wxUSE_DC_CACHEING
+
+/*
+ * This implementation is a bit ugly and uses the old-fashioned wxList class, so I will
+ * improve it in due course, either using arrays, or simply storing pointers to one
+ * entry for the bitmap, and two for the DCs. -- JACS
+ */
+
+// ---------------------------------------------------------------------------
+// wxDCCacheEntry
+// ---------------------------------------------------------------------------
+
+wxList wxDC::m_svBitmapCache;
+wxList wxDC::m_svDCCache;
+
+wxDCCacheEntry::wxDCCacheEntry(
+  WXHBITMAP                         hBitmap
+, int                               nWidth
+, int                               nHeight
+, int                               nDepth
+)

 {
 {

-    long new_x = x - m_logicalOriginX;
-    if (new_x > 0)
-        return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
-    else
-    return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
-};
+    m_hBitmap = hBitmap;
+    m_hPS     = NULLHANDLE;
+    m_nWidth  = nWidth;
+    m_nHeight = nHeight;
+    m_nDepth  = nDepth;
+} // end of wxDCCacheEntry::wxDCCacheEntry
+
+wxDCCacheEntry::wxDCCacheEntry(
+  HPS                               hPS
+, int                               nDepth
+)
+{
+    m_hBitmap = NULLHANDLE;
+    m_hPS     = hPS;
+    m_nWidth  = 0;
+    m_nHeight = 0;
+    m_nDepth  = nDepth;
+} // end of wxDCCacheEntry::wxDCCacheEntry
+
+wxDCCacheEntry::~wxDCCacheEntry()
+{
+    if (m_hBitmap)
+        ::GpiDeleteBitmap(m_hBitmap);
+    if (m_hPS)
+        ::GpiDestroyPS(m_hPS);
+} // end of wxDCCacheEntry::~wxDCCacheEntry
+
+wxDCCacheEntry* wxDC::FindBitmapInCache(
+  HPS                               hPS
+, int                               nWidth
+, int                               nHeight
+)
+{
+    int                             nDepth = 24; // we'll fix this later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
+    wxNode*                         pNode = m_svBitmapCache.First();
+    BITMAPINFOHEADER2               vBmpHdr;
+
+    while(pNode)
+    {
+        wxDCCacheEntry*             pEntry = (wxDCCacheEntry*)pNode->Data();
+
+        if (pEntry->m_nDepth == nDepth)
+        {
+            memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));

 
 

-long wxDCBase::LogicalToDeviceY(long y) const
+            if (pEntry->m_nWidth < nWidth || pEntry->m_nHeight < nHeight)
+            {
+                ::GpiDeleteBitmap((HBITMAP)pEntry->m_hBitmap);
+                vBmpHdr.cbFix     = sizeof(BITMAPINFOHEADER2);
+                vBmpHdr.cx        = nWidth;
+                vBmpHdr.cy        = nHeight;
+                vBmpHdr.cPlanes   = 1;
+                vBmpHdr.cBitCount = nDepth;
+
+                pEntry->m_hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
+                                                                  ,&vBmpHdr
+                                                                  ,0L, NULL, NULL
+                                                                 );
+                if (!pEntry->m_hBitmap)
+                {
+                    wxLogLastError(wxT("CreateCompatibleBitmap"));
+                }
+                pEntry->m_nWidth  = nWidth;
+                pEntry->m_nHeight = nHeight;
+                return pEntry;
+            }
+            return pEntry;
+        }
+        pNode = pNode->Next();
+    }
+    memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
+    vBmpHdr.cbFix     = sizeof(BITMAPINFOHEADER2);
+    vBmpHdr.cx        = nWidth;
+    vBmpHdr.cy        = nHeight;
+    vBmpHdr.cPlanes   = 1;
+    vBmpHdr.cBitCount = nDepth;
+
+    WXHBITMAP                       hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
+                                                                            ,&vBmpHdr
+                                                                            ,0L, NULL, NULL
+                                                                           );
+    if (!hBitmap)
+    {
+        wxLogLastError(wxT("CreateCompatibleBitmap"));
+    }
+    wxDCCacheEntry*                 pEntry = new wxDCCacheEntry( hBitmap
+                                                                ,nWidth
+                                                                ,nHeight
+                                                                ,nDepth
+                                                               );
+    AddToBitmapCache(pEntry);
+    return pEntry;
+} // end of FindBitmapInCache
+
+wxDCCacheEntry* wxDC::FindDCInCache(
+  wxDCCacheEntry*                   pNotThis
+, HPS                               hPS
+)

 {
 {

-    long new_y = y - m_logicalOriginY;
-    if (new_y > 0)
-        return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
-    else
-        return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
-};
+    int                             nDepth = 24; // we'll fix this up later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
+    wxNode*                         pNode = m_svDCCache.First();

 
 

-long wxDCBase::LogicalToDeviceXRel(long x) const
+    while(pNode)
+    {
+        wxDCCacheEntry*             pEntry = (wxDCCacheEntry*)pNode->Data();
+
+        //
+        // Don't return the same one as we already have
+        //
+        if (!pNotThis || (pNotThis != pEntry))
+        {
+            if (pEntry->m_nDepth == nDepth)
+            {
+                return pEntry;
+            }
+        }
+        pNode = pNode->Next();
+    }
+    wxDCCacheEntry*                 pEntry = new wxDCCacheEntry( hPS
+                                                                ,nDepth
+                                                               );
+    AddToDCCache(pEntry);
+    return pEntry;
+} // end of wxDC::FindDCInCache
+
+void wxDC::AddToBitmapCache(
+  wxDCCacheEntry*                   pEntry
+)

 {
 {

-    if (x > 0)
-        return (long)((double)(x) * m_scaleX + 0.5);
-    else
-        return (long)((double)(x) * m_scaleX - 0.5);
-};
+    m_svBitmapCache.Append(pEntry);
+} // end of wxDC::AddToBitmapCache

 
 

-long wxDCBase::LogicalToDeviceYRel(long y) const
+void wxDC::AddToDCCache(
+  wxDCCacheEntry*                   pEntry
+)

 {
 {

-    if (y > 0)
-        return (long)((double)(y) * m_scaleY + 0.5);
-    else
-        return (long)((double)(y) * m_scaleY - 0.5);
-};
+    m_svDCCache.Append(pEntry);
+} // end of wxDC::AddToDCCache
+
+void wxDC::ClearCache()
+{
+    m_svBitmapCache.DeleteContents(TRUE);
+    m_svBitmapCache.Clear();
+    m_svBitmapCache.DeleteContents(FALSE);
+    m_svDCCache.DeleteContents(TRUE);
+    m_svDCCache.Clear();
+    m_svDCCache.DeleteContents(FALSE);
+} // end of wxDC::ClearCache
+
+// Clean up cache at app exit
+class wxDCModule : public wxModule
+{
+public:
+    virtual bool OnInit() { return TRUE; }
+    virtual void OnExit() { wxDC::ClearCache(); }
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxDCModule)
+}; // end of CLASS wxDCModule
+
+IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)

 
 

-//-----------------------------------------------------------------------------
+#endif // ndef for wxUSE_DC_CACHEING
+
+// ---------------------------------------------------------------------------

 // wxDC
 // wxDC

-//-----------------------------------------------------------------------------
+// ---------------------------------------------------------------------------

 
 wxDC::wxDC(void)
 {
 
 wxDC::wxDC(void)
 {

-    m_canvas  = NULL;
+    wxColour                        vColor;
+
+    m_pCanvas      = NULL;
+
+    m_hOldBitmap   = 0;
+    m_hOldPen      = 0;
+    m_hOldBrush    = 0;
+    m_hOldFont     = 0;
+    m_hOldPalette  = 0;

 
 

-    m_oldBitmap  = 0;
-    m_oldPen     = 0;
-    m_oldBrush   = 0;
-    m_oldFont    = 0;
-    m_oldPalette = 0;
+    m_bOwnsDC      = FALSE;
+    m_hDC          = 0;
+    m_hOldPS       = NULL;
+    m_hPS          = NULL;
+    m_bIsPaintTime = FALSE; // True at Paint Time

 
 

-    m_bOwnsDC = FALSE;
-    m_hDC        = 0;
-    m_hDCCount   = 0;
-};
+    vColor.InitFromName("BLACK");
+    m_pen.SetColour(vColor);
+    vColor.Set("WHITE");
+    m_brush.SetColour(vColor);
+} // end of wxDC::wxDC

 
 wxDC::~wxDC(void)
 {
 
 wxDC::~wxDC(void)
 {

-    // TODO:
-};
+    if ( m_hDC != 0 )
+    {
+        SelectOldObjects(m_hDC);

 
 

-void wxDC::DestroyClippingRegion(void)
+        // if we own the HDC, we delete it, otherwise we just release it
+
+        if (m_bOwnsDC)
+        {
+            if(m_hPS)
+            {
+                ::GpiAssociate(m_hPS, NULLHANDLE);
+                ::GpiDestroyPS(m_hPS);
+            }
+            m_hPS = NULLHANDLE;
+            ::DevCloseDC((HDC)m_hDC);
+        }
+        else
+        {
+            //
+            // Just Dissacociate, not destroy if we don't own the DC
+            //
+            if(m_hPS)
+            {
+                ::GpiAssociate(m_hPS, NULLHANDLE);
+            }
+        }
+    }
+} // end of wxDC::~wxDC
+
+// This will select current objects out of the DC,
+// which is what you have to do before deleting the
+// DC.
+void wxDC::SelectOldObjects(
+  WXHDC                             hPS
+)

 {
 {

-    // TODO:
-};
+    if (hPS)
+    {
+        if (m_hOldBitmap)
+        {
+            ::GpiSetBitmap(hPS, (HBITMAP) m_hOldBitmap);
+            if (m_vSelectedBitmap.Ok())
+            {
+                m_vSelectedBitmap.SetSelectedInto(NULL);
+            }
+        }
+        m_hOldBitmap = 0;
+        //
+        // OS/2 has no other native GDI objects to set in a PS/DC like windows
+        //
+        m_hOldPen = 0;
+        m_hOldBrush = 0;
+        m_hOldFont = 0;
+        m_hOldPalette = 0;
+    }
+
+    m_brush           = wxNullBrush;
+    m_pen             = wxNullPen;
+    m_palette         = wxNullPalette;
+    m_font            = wxNullFont;
+    m_backgroundBrush = wxNullBrush;
+    m_vSelectedBitmap = wxNullBitmap;
+} // end of wxDC::SelectOldObjects
+
+// ---------------------------------------------------------------------------
+// clipping
+// ---------------------------------------------------------------------------
+
+#define DO_SET_CLIPPING_BOX()                    \
+{                                                \
+    RECTL rect;                                  \
+                                                 \
+    ::GpiQueryClipBox(m_hPS, &rect);             \
+                                                 \
+    m_clipX1 = (wxCoord) XDEV2LOG(rect.xLeft);   \
+    m_clipY1 = (wxCoord) YDEV2LOG(rect.yTop);    \
+    m_clipX2 = (wxCoord) XDEV2LOG(rect.xRight);  \
+    m_clipY2 = (wxCoord) YDEV2LOG(rect.yBottom); \
+}

 
 

-void wxDC::DoGetSize( int* width, int* height ) const
+void wxDC::DoSetClippingRegion(
+  wxCoord                           vX
+, wxCoord                           vY
+, wxCoord                           vWidth
+, wxCoord                           vHeight
+)
+{
+    RECTL                           vRect;
+
+    vY = OS2Y(vY,vHeight);
+    m_clipping    = TRUE;
+    vRect.xLeft   = vX;
+    vRect.yTop    = vY + vHeight;
+    vRect.xRight  = vX + vWidth;
+    vRect.yBottom = vY;
+    ::GpiIntersectClipRectangle(m_hPS, &vRect);
+    DO_SET_CLIPPING_BOX()
+} // end of wxDC::DoSetClippingRegion
+
+void wxDC::DoSetClippingRegionAsRegion(
+  const wxRegion&                   rRegion
+)

 {
 {

-    // TODO:
-};
+     wxCHECK_RET(rRegion.GetHRGN(), wxT("invalid clipping region"));
+     HRGN                           hRgnOld;
+
+     m_clipping = TRUE;
+     ::GpiSetClipRegion( m_hPS
+                        ,(HRGN)rRegion.GetHRGN()
+                        ,&hRgnOld
+                       );
+    DO_SET_CLIPPING_BOX()
+} // end of wxDC::DoSetClippingRegionAsRegion

 
 

-void wxDC::DoGetSizeMM( int* width, int* height ) const
+void wxDC::DestroyClippingRegion(void)
+{
+    if (m_clipping && m_hPS)
+    {
+         HRGN                       hRgnOld;
+         RECTL                      vRect;
+
+         // TODO: this should restore the previous clipped region
+         //       so that OnPaint processing works correctly, and
+         //       the update doesn't get destroyed after the first
+         //       DestroyClippingRegion
+         vRect.xLeft   = XLOG2DEV(0);
+         vRect.yTop    = YLOG2DEV(32000);
+         vRect.xRight  = XLOG2DEV(32000);
+         vRect.yBottom = YLOG2DEV(0);
+
+         HRGN                       hRgn = ::GpiCreateRegion(m_hPS, 1, &vRect);
+
+         ::GpiSetClipRegion(m_hPS, hRgn, &hRgnOld);
+     }
+      m_clipping = FALSE;
+} // end of wxDC::DestroyClippingRegion
+
+// ---------------------------------------------------------------------------
+// query capabilities
+// ---------------------------------------------------------------------------
+
+bool wxDC::CanDrawBitmap() const

 {
 {

-    // TODO:
-};
+    return TRUE;
+}

 
 

-void wxDC::SetMapMode( int mode )
+bool wxDC::CanGetTextExtent() const

 {
 {

-    // TODO:
-};
+    LONG                            lTechnology = 0L;
+
+    ::DevQueryCaps(GetHDC(), CAPS_TECHNOLOGY, 1L, &lTechnology);
+    return (lTechnology == CAPS_TECH_RASTER_DISPLAY) || (lTechnology == CAPS_TECH_RASTER_PRINTER);
+} // end of wxDC::CanGetTextExtent

 
 

-void wxDC::SetUserScale( double x, double y )
+int wxDC::GetDepth() const

 {
 {

-    m_userScaleX = x;
-    m_userScaleY = y;
+    LONG                            lArray[CAPS_COLOR_BITCOUNT];
+    int                             nBitsPerPixel;
+
+    if(::DevQueryCaps( GetHDC()
+                      ,CAPS_FAMILY
+                      ,CAPS_COLOR_BITCOUNT
+                      ,lArray
+                     ))
+    {
+        nBitsPerPixel = (int)lArray[CAPS_COLOR_BITCOUNT];
+    }
+    return nBitsPerPixel;
+} // end of wxDC::GetDepth

 
 

-    SetMapMode(m_mappingMode);
-};
+// ---------------------------------------------------------------------------
+// drawing
+// ---------------------------------------------------------------------------

 
 

-void wxDC::SetLogicalScale( double x, double y )
+void wxDC::Clear()
+{
+    ::GpiErase(m_hPS);
+} // end of wxDC::Clear
+
+void wxDC::DoFloodFill(
+  wxCoord                           vX
+, wxCoord                           vY
+, const wxColour&                   rCol
+, int                               nStyle
+)

 {
 {

-    // TODO:
-};
+    POINTL                          vPtlPos;
+    LONG                            lColor;
+    LONG                            lOptions;
+
+    vPtlPos.x = vX;             // Loads x-coordinate
+    vPtlPos.y = OS2Y(vY,0);     // Loads y-coordinate
+    ::GpiMove(m_hPS, &vPtlPos); // Sets current position
+    lColor = rCol.GetPixel();
+    lOptions = FF_BOUNDARY;
+    if(wxFLOOD_SURFACE == nStyle)
+        lOptions = FF_SURFACE;
+
+    ::GpiFloodFill(m_hPS, lOptions, lColor);
+} // end of wxDC::DoFloodFill
+
+bool wxDC::DoGetPixel(
+  wxCoord                           vX
+, wxCoord                           vY
+, wxColour*                         pCol
+) const
+{
+    POINTL                          vPoint;
+    LONG                            lColor;
+
+    vPoint.x = vX;
+    vPoint.y = OS2Y(vY,0);
+    lColor = ::GpiSetPel(m_hPS, &vPoint);

 
 

-void wxDC::SetLogicalOrigin( long x, long y )
+    //
+    // Get the color of the pen
+    //
+    LONG                            lPencolor = 0x00ffffff;
+
+    if (m_pen.Ok())
+    {
+        lPencolor = m_pen.GetColour().GetPixel();
+    }
+
+    //
+    // return the color of the pixel
+    //
+    if(pCol)
+        pCol->Set( GetRValue(lColor)
+                  ,GetGValue(lColor)
+                  ,GetBValue(lColor)
+                 );
+    return(lColor == lPencolor);
+} // end of wxDC::DoGetPixel
+
+void wxDC::DoCrossHair(
+  wxCoord                           vX
+, wxCoord                           vY
+)

 {
 {

-    // TODO:
-};
+    vY = OS2Y(vY,0);
+
+    wxCoord                         vX1 = vX - VIEWPORT_EXTENT;
+    wxCoord                         vY1 = vY - VIEWPORT_EXTENT;
+    wxCoord                         vX2 = vX + VIEWPORT_EXTENT;
+    wxCoord                         vY2 = vY + VIEWPORT_EXTENT;
+    POINTL                          vPoint[4];
+
+    vPoint[0].x = vX1;
+    vPoint[0].y = vY;
+
+    vPoint[1].x = vX2;
+    vPoint[1].y = vY;
+
+    ::GpiMove(m_hPS, &vPoint[0]);
+    ::GpiLine(m_hPS, &vPoint[1]);
+
+    vPoint[2].x = vX;
+    vPoint[2].y = vY1;
+
+    vPoint[3].x = vX;
+    vPoint[3].y = vY2;
+
+    ::GpiMove(m_hPS, &vPoint[2]);
+    ::GpiLine(m_hPS, &vPoint[3]);
+    CalcBoundingBox(vX1, vY1);
+    CalcBoundingBox(vX2, vY2);
+} // end of wxDC::DoCrossHair

 
 

-void wxDC::SetDeviceOrigin( long x, long y )
+void wxDC::DoDrawLine(
+  wxCoord                           vX1
+, wxCoord                           vY1
+, wxCoord                           vX2
+, wxCoord                           vY2
+)

 {
 {

-    // TODO:
-};
+    POINTL                          vPoint[2];
+
+    vY1 = OS2Y(vY1,0);
+    vY2 = OS2Y(vY2,0);
+
+    vPoint[0].x = vX1;
+    vPoint[0].y = vY1;
+    vPoint[1].x = vX2;
+    vPoint[1].y = vY2;
+    ::GpiMove(m_hPS, &vPoint[0]);
+    ::GpiLine(m_hPS, &vPoint[1]);
+    CalcBoundingBox(vX1, vY1);
+    CalcBoundingBox(vX2, vY2);
+} // end of wxDC::DoDrawLine
+
+//////////////////////////////////////////////////////////////////////////////
+// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
+// and ending at (x2, y2). The current pen is used for the outline and the
+// current brush for filling the shape. The arc is drawn in an anticlockwise
+// direction from the start point to the end point.
+//////////////////////////////////////////////////////////////////////////////
+void wxDC::DoDrawArc(
+  wxCoord                           vX1
+, wxCoord                           vY1
+, wxCoord                           vX2
+, wxCoord                           vY2
+, wxCoord                           vXc
+, wxCoord                           vYc
+)
+{
+     POINTL                         vPtlPos;
+     POINTL                         vPtlArc[2]; // Structure for current position
+     int                            nDx;
+     int                            nDy;
+     double                         dRadius;
+     double                         dAngl1;
+     double                         dAngl2;
+     double                         dAnglmid;
+     wxCoord                        vXm;
+     wxCoord                        vYm;
+     ARCPARAMS                      vArcp; // Structure for arc parameters
+
+    if((vX1 == vXc && vY1 == vXc) || (vX2 == vXc && vY2 == vXc))
+        return; // Draw point ??
+    dRadius = 0.5 * ( hypot( (double)(vY1 - vYc)
+                            ,(double)(vX1 - vXc)
+                           ) +
+                      hypot( (double)(vY2 - vYc)
+                            ,(double)(vX2 - vXc)
+                           )
+                     );
+
+    dAngl1 = atan2( (double)(vY1 - vYc)
+                   ,(double)(vX1 - vXc)
+                  );
+    dAngl2 = atan2( (double)(vY2 - vYc)
+                   ,(double)(vX2 - vXc)
+                  );
+    if(dAngl2 < dAngl1)
+        dAngl2 += M_PI * 2;
+
+    //
+    // GpiPointArc can't draw full arc
+    //
+     if(dAngl2 == dAngl1 || (vX1 == vX2 && vY1 == vY2) )
+     {
+        //
+        // Medium point
+        //
+        dAnglmid = (dAngl1 + dAngl2)/2. + M_PI;
+        vXm      = vXc + dRadius * cos(dAnglmid);
+        vYm      = vYc + dRadius * sin(dAnglmid);
+        DoDrawArc( vX1, vY1
+                  ,vXm, vYm
+                  ,vXc, vYc
+                 );
+        DoDrawArc( vXm, vYm
+                  ,vX2, vY2
+                  ,vXc, vYc
+                 );
+        return;
+    }

 
 

-void wxDC::SetInternalDeviceOrigin( long x, long y )
+    //
+    // Medium point
+    //
+    dAnglmid = (dAngl1 + dAngl2)/2.;
+    vXm      = vXc + dRadius * cos(dAnglmid);
+    vYm      = vYc + dRadius * sin(dAnglmid);
+
+    //
+    // Ellipse main axis (r,q), (p,s) with center at (0,0) */
+    //
+    vArcp.lR = 0;
+    vArcp.lQ = 1;
+    vArcp.lP = 1;
+    vArcp.lS = 0;
+    ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
+
+    vPtlPos.x = vX1; // Loads x-coordinate
+    vPtlPos.y = vY1; // Loads y-coordinate
+    ::GpiMove(m_hPS, &vPtlPos); // Sets current position
+    vPtlArc[0].x = vXm;
+    vPtlArc[0].y = vYm;
+    vPtlArc[1].x = vX2;
+    vPtlArc[1].y = vY2;
+    ::GpiPointArc(m_hPS, vPtlArc); // Draws the arc
+    CalcBoundingBox( (vXc - dRadius)
+                    ,(vYc - dRadius)
+                   );
+    CalcBoundingBox( (vXc + dRadius)
+                    ,(vYc + dRadius)
+                   );
+} // end of wxDC::DoDrawArc
+
+void wxDC::DoDrawCheckMark(
+  wxCoord                           vX1
+, wxCoord                           vY1
+, wxCoord                           vWidth
+, wxCoord                           vHeight
+)
+{
+    POINTL                          vPoint[2];
+
+    vY1 = OS2Y(vY1,vHeight);
+
+    vPoint[0].x = vX1;
+    vPoint[0].y = vY1;
+    vPoint[1].x = vX1 + vWidth;
+    vPoint[1].y = vY1 + vHeight;
+
+    ::GpiMove(m_hPS, &vPoint[0]);
+    ::GpiBox( m_hPS       // handle to a presentation space
+             ,DRO_OUTLINE // draw the box outline ? or ?
+             ,&vPoint[1]  // address of the corner
+             ,0L          // horizontal corner radius
+             ,0L          // vertical corner radius
+            );
+    if(vWidth > 4 && vHeight > 4)
+    {
+        int                         nTmp;
+
+        vPoint[0].x += 2; vPoint[0].y += 2;
+        vPoint[1].x -= 2; vPoint[1].y -= 2;
+        ::GpiMove(m_hPS, &vPoint[0]);
+        ::GpiLine(m_hPS, &vPoint[1]);
+        nTmp = vPoint[0].x;
+        vPoint[0].x = vPoint[1].x;
+        vPoint[1].x = nTmp;
+        ::GpiMove(m_hPS, &vPoint[0]);
+        ::GpiLine(m_hPS, &vPoint[1]);
+    }
+    CalcBoundingBox( vX1
+                    ,vY1
+                   );
+
+    wxCoord                         vX2 = vX1 + vWidth;
+    wxCoord                         vY2 = vY1 + vHeight;
+
+    CalcBoundingBox( vX2
+                    ,vY2
+                   );
+} // end of wxDC::DoDrawCheckMark
+
+void wxDC::DoDrawPoint(
+  wxCoord                           vX
+, wxCoord                           vY
+)

 {
 {

-    // TODO:
-};
+    POINTL                          vPoint;
+    COLORREF                        vColor = 0x00ffffff;

 
 

-void wxDC::GetInternalDeviceOrigin( long *x, long *y )
+    if (m_pen.Ok())
+    {
+        vColor = m_pen.GetColour().GetPixel();
+    }
+    ::GpiSetColor(m_hPS, vColor);
+    vPoint.x = vX;
+    vPoint.y = OS2Y(vY,0);
+    ::GpiSetPel(m_hPS, &vPoint);
+    CalcBoundingBox( vX
+                    ,vY
+                   );
+} // end of wxDC::DoDrawPoint
+
+void wxDC::DoDrawPolygon(
+  int                               n
+, wxPoint                           vPoints[]
+, wxCoord                           vXoffset
+, wxCoord                           vYoffset
+, int                               nFillStyle
+)

 {
 {

-    // TODO:
-};
+    ULONG                           ulCount = 1;    // Number of polygons.
+    POLYGON                         vPlgn;          // polygon.
+    ULONG                           flOptions = 0L; // Drawing options.

 
 

-void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
+//////////////////////////////////////////////////////////////////////////////
+// This contains fields of option bits... to draw boundary lines as well as
+// the area interior.
+//
+// Drawing boundary lines:
+//   POLYGON_NOBOUNDARY              Does not draw boundary lines.
+//   POLYGON_BOUNDARY                Draws boundary lines (the default).
+//
+// Construction of the area interior:
+//   POLYGON_ALTERNATE               Constructs interior in alternate mode
+//                                   (the default).
+//   POLYGON_WINDING                 Constructs interior in winding mode.
+//////////////////////////////////////////////////////////////////////////////
+
+    ULONG                           flModel = 0L; // Drawing model.
+
+//////////////////////////////////////////////////////////////////////////////
+// Drawing model.
+//   POLYGON_INCL  Fill is inclusive of bottom right (the default).
+//   POLYGON_EXCL  Fill is exclusive of bottom right.
+//       This is provided to aid migration from other graphics models.
+//////////////////////////////////////////////////////////////////////////////
+
+    LONG                            lHits = 0L; // Correlation/error indicator.
+    POINTL                          vPoint;
+    int                             i;
+    int                             nIsTRANSPARENT = 0;
+    LONG                            lBorderColor = 0L;
+    LONG                            lColor = 0L;
+
+    lBorderColor = m_pen.GetColour().GetPixel();
+    lColor       = m_brush.GetColour().GetPixel();
+    if(m_brush.GetStyle() == wxTRANSPARENT)
+        nIsTRANSPARENT = 1;
+
+    vPlgn.ulPoints = n;
+    vPlgn.aPointl = (POINTL*) calloc( n + 1
+                                     ,sizeof(POINTL)
+                                    ); // well, new will call malloc
+
+    for(i = 0; i < n; i++)
+    {
+        vPlgn.aPointl[i].x = vPoints[i].x;         // +xoffset;
+        vPlgn.aPointl[i].y = OS2Y(vPoints[i].y,0); // +yoffset;
+    }
+    flModel = POLYGON_BOUNDARY;
+    if(nFillStyle == wxWINDING_RULE)
+        flModel |= POLYGON_WINDING;
+    else
+        flModel |= POLYGON_ALTERNATE;
+
+    vPoint.x = vXoffset;
+    vPoint.y = OS2Y(vYoffset,0);
+
+    ::GpiSetColor(m_hPS, lBorderColor);
+    ::GpiMove(m_hPS, &vPoint);
+    lHits = ::GpiPolygons(m_hPS, ulCount, &vPlgn, flOptions, flModel);
+    free(vPlgn.aPointl);
+} // end of wxDC::DoDrawPolygon
+
+void wxDC::DoDrawLines(
+  int                               n
+, wxPoint                           vPoints[]
+, wxCoord                           vXoffset
+, wxCoord                           vYoffset
+)

 {
 {

-    // TODO:
-};
+    POINTL                          vPoint;

 
 

+    if (vXoffset != 0L || vXoffset != 0L)
+    {
+        int                             i;

 
 

-int wxDC::GetDepth() const
-{
-   // TODO:
-   return (1);
-}
+        vPoint.x = vPoints[0].x + vXoffset;
+        vPoint.y = OS2Y(vPoints[0].y + vYoffset,0);
+        ::GpiMove(m_hPS, &vPoint);

 
 

-wxSize wxDC::GetPPI() const
+        LONG                            lBorderColor = m_pen.GetColour().GetPixel();
+
+        ::GpiSetColor(m_hPS, lBorderColor);
+        for(i = 1; i < n; i++)
+        {
+            vPoint.x = vPoints[i].x + vXoffset;
+            vPoint.y = OS2Y(vPoints[i].y + vYoffset,0);
+            ::GpiLine(m_hPS, &vPoint);
+        }
+    }
+    else
+    {
+        int                         i;
+
+        CalcBoundingBox( vPoints[i].x
+                        ,vPoints[i].y
+                       );
+        vPoint.x = vPoints[0].x;
+        vPoint.y = OS2Y(vPoints[0].y,0);
+        ::GpiMove(m_hPS, &vPoint);
+
+        for (i = 0; i < n; i++)
+        {
+            CalcBoundingBox( vPoints[i].x
+                            ,vPoints[i].y
+                           );
+            vPoint.x = vPoints[i].x;
+            vPoint.y = OS2Y(vPoints[i].y,0);
+            ::GpiLine(m_hPS, &vPoint);
+        }
+    }
+} // end of wxDC::DoDrawLines
+
+void wxDC::DoDrawRectangle(
+  wxCoord                           vX
+, wxCoord                           vY
+, wxCoord                           vWidth
+, wxCoord                           vHeight
+)

 {
 {

-   int x = 1;
-   int y = 1;
-   // TODO:
-   return (wxSize(x,y));
-}
-void wxDC::GetTextExtent( const wxString& string
-                         ,long* x
-                         ,long* y
-                         ,long* decent
-                         ,long* externalLeading
-                         ,wxFont* theFont
-                        ) const
+    POINTL                          vPoint[2];
+    LONG                            lControl;
+    LONG                            lColor;
+    LONG                            lBorderColor;
+    int                             nIsTRANSPARENT = 0;
+
+    vY = OS2Y(vY,vHeight);
+
+    wxCoord                         vX2 = vX + vWidth;
+    wxCoord                         vY2 = vY + vHeight;
+
+    vPoint[0].x = vX;
+    vPoint[0].y = vY;
+    vPoint[1].x = vX + vWidth;
+    vPoint[1].y = vY + vHeight;
+    ::GpiMove(m_hPS, &vPoint[0]);
+    lColor       = m_brush.GetColour().GetPixel();
+    lBorderColor = m_pen.GetColour().GetPixel();
+    if (m_brush.GetStyle() == wxTRANSPARENT)
+        nIsTRANSPARENT = 1;
+    if(lColor == lBorderColor || nIsTRANSPARENT)
+    {
+        lControl = DRO_OUTLINEFILL; //DRO_FILL;
+        if(m_brush.GetStyle() == wxTRANSPARENT)
+            lControl = DRO_OUTLINE;
+
+        ::GpiSetColor(m_hPS, lColor);
+        ::GpiBox( m_hPS       // handle to a presentation space
+                 ,lControl   // draw the box outline ? or ?
+                 ,&vPoint[1]  // address of the corner
+                 ,0L          // horizontal corner radius
+                 ,0L          // vertical corner radius
+                );
+    }
+    else
+    {
+        lControl = DRO_OUTLINE;
+        ::GpiSetColor( m_hPS
+                      ,lBorderColor
+                     );
+        ::GpiBox( m_hPS
+                 ,lControl
+                 ,&vPoint[1]
+                 ,0L
+                 ,0L
+                );
+        lControl = DRO_FILL;
+        ::GpiSetColor( m_hPS
+                      ,lColor
+                     );
+        vPoint[0].x = vX + 1;
+        vPoint[0].y = vY + 1;
+        vPoint[1].x = vX + vWidth - 1;
+        vPoint[1].y = vY + vHeight - 1;
+        ::GpiMove(m_hPS, &vPoint[0]);
+        ::GpiBox( m_hPS
+                 ,lControl
+                 ,&vPoint[1]
+                 ,0L
+                 ,0L
+                );
+    }
+    CalcBoundingBox(vX, vY);
+    CalcBoundingBox(vX2, vY2);
+} // end of wxDC::DoDrawRectangle
+
+void wxDC::DoDrawRoundedRectangle(
+  wxCoord                           vX
+, wxCoord                           vY
+, wxCoord                           vWidth
+, wxCoord                           vHeight
+, double                            dRadius
+)

 {
 {

-   // TODO:
-}
-
-long wxDC::GetCharWidth() const
+    POINTL                          vPoint[2];
+    LONG                            lControl;
+
+    vY = OS2Y(vY,vHeight);
+
+    wxCoord                         vX2 = (vX + vWidth);
+    wxCoord                         vY2 = (vY + vHeight);
+
+    vPoint[0].x = vX;
+    vPoint[0].y = YLOG2DEV(vY) - vHeight;
+    vPoint[1].x = vX + vWidth;
+    vPoint[1].y = vY;
+    ::GpiMove(m_hPS, &vPoint[0]);
+
+    lControl = DRO_OUTLINEFILL; //DRO_FILL;
+    if (m_brush.GetStyle() == wxTRANSPARENT)
+        lControl = DRO_OUTLINE;
+    ::GpiBox( m_hPS         // handle to a presentation space
+             ,DRO_OUTLINE   // draw the box outline ? or ?
+             ,&vPoint[1]    // address of the corner
+             ,(LONG)dRadius // horizontal corner radius
+             ,(LONG)dRadius // vertical corner radius
+            );
+    CalcBoundingBox(vX, vY);
+    CalcBoundingBox(vX2, vY2);
+} // end of wxDC::DoDrawRoundedRectangle
+
+// Draw Ellipse within box (x,y) - (x+width, y+height)
+void wxDC::DoDrawEllipse(
+  wxCoord                           vX
+, wxCoord                           vY
+, wxCoord                           vWidth
+, wxCoord                           vHeight
+)

 {
 {

-    // TODO
-    return(1);
-}
-
-long wxDC::GetCharHeight() const
+    POINTL                          vPtlPos; // Structure for current position
+    FIXED                           vFxMult; // Multiplier for ellipse
+    ARCPARAMS                       vArcp;   // Structure for arc parameters
+
+    vY = OS2Y(vY,vHeight);
+
+    vArcp.lR = 0;
+    vArcp.lQ = vHeight/2;
+    vArcp.lP = vWidth/2;
+    vArcp.lS = 0;
+    ::GpiSetArcParams( m_hPS
+                      ,&vArcp
+                     ); // Sets parameters to default
+    vPtlPos.x = vX + vWidth/2;  // Loads x-coordinate
+    vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
+    ::GpiMove( m_hPS
+              ,&vPtlPos
+             ); // Sets current position
+    vFxMult = MAKEFIXED(1, 0);             /* Sets multiplier            */
+
+    //
+    // DRO_FILL, DRO_OTLINEFILL - where to get
+    //
+    ::GpiFullArc( m_hPS
+                 ,DRO_OUTLINE
+                 ,vFxMult
+                ); // Draws full arc with center at current position
+
+    wxCoord                         vX2 = (vX + vWidth);
+    wxCoord                         vY2 = (vY + vHeight);
+
+    CalcBoundingBox(vX, vY);
+    CalcBoundingBox(vX2, vY2);
+} // end of wxDC::DoDrawEllipse
+
+void wxDC::DoDrawEllipticArc(
+  wxCoord                           vX
+, wxCoord                           vY
+, wxCoord                           vWidth
+, wxCoord                           vHeight
+, double                            dSa
+, double                            dEa
+)
+{
+    POINTL                          vPtlPos; // Structure for current position
+    FIXED                           vFxMult; // Multiplier for ellipse
+    ARCPARAMS                       vArcp;   // Structure for arc parameters
+    FIXED                           vFSa;
+    FIXED                           vFSweepa; // Start angle, sweep angle
+    double                          dIntPart;
+    double                          dFractPart;
+    double                          dRadius;
+
+    vY = OS2Y(vY,vHeight);
+
+    dFractPart = modf(dSa,&dIntPart);
+    vFSa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
+    dFractPart = modf(dEa - dSa, &dIntPart);
+    vFSweepa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
+
+    //
+    // Ellipse main axis (r,q), (p,s) with center at (0,0)
+    //
+    vArcp.lR = 0;
+    vArcp.lQ = vHeight/2;
+    vArcp.lP = vWidth/2;
+    vArcp.lS = 0;
+    ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
+    vPtlPos.x = vX + vWidth/2  * (1. + cos(DegToRad(dSa))); // Loads x-coordinate
+    vPtlPos.y = vY + vHeight/2 * (1. + sin(DegToRad(dSa))); // Loads y-coordinate
+    ::GpiMove(m_hPS, &vPtlPos); // Sets current position
+
+    //
+    // May be not to the center ?
+    //
+    vPtlPos.x = vX + vWidth/2 ; // Loads x-coordinate
+    vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
+    vFxMult = MAKEFIXED(1, 0);  // Sets multiplier
+
+    //
+    // DRO_FILL, DRO_OTLINEFILL - where to get
+    //
+    ::GpiPartialArc( m_hPS
+                    ,&vPtlPos
+                    ,vFxMult
+                    ,vFSa
+                    ,vFSweepa
+                   );
+    wxCoord                         vX2 = (vX + vWidth);
+    wxCoord                         vY2 = (vY + vHeight);
+
+    CalcBoundingBox(vX, vY);
+    CalcBoundingBox(vX2, vY2);
+} // end of wxDC::DoDrawEllipticArc
+
+void wxDC::DoDrawIcon(
+  const wxIcon&                     rIcon
+, wxCoord                           vX
+, wxCoord                           vY
+)
+{
+    vY = OS2Y(vY,rIcon.GetHeight());
+    wxCHECK_RET( rIcon.Ok(), wxT("invalid icon in DrawIcon") );
+
+    ::WinDrawPointer( GetHPS()
+                     ,vX
+                     ,vY
+                     ,(HPOINTER)GetHiconOf(rIcon)
+                     ,DP_NORMAL
+                    );
+    CalcBoundingBox(vX, vY);
+    CalcBoundingBox(vX + rIcon.GetWidth(), vY + rIcon.GetHeight());
+} // end of wxDC::DoDrawIcon
+
+void wxDC::DoDrawBitmap(
+  const wxBitmap&                   rBmp
+, wxCoord                           vX
+, wxCoord                           vY
+, bool                              bUseMask
+)

 {
 {

-    // TODO
-    return(1);
+    POINTL                          vPoint = {vX, vY};
+
+    ::WinDrawBitmap( GetHPS()
+                    ,(HBITMAP)GetHbitmapOf(rBmp)
+                    ,NULL
+                    ,&vPoint
+                    ,0L
+                    ,0L
+                    ,DBM_NORMAL
+                   );
+} // end of wxDC::DoDrawBitmap
+
+void wxDC::DoDrawText(
+  const wxString&                   rsText
+, wxCoord                           vX
+, wxCoord                           vY
+)
+{
+    wxCoord                         vWidth;
+    wxCoord                         vHeight;
+
+    DrawAnyText( rsText
+                ,vX
+                ,vY
+               );
+
+    CalcBoundingBox(vX, vY);
+    GetTextExtent(rsText, &vWidth, &vHeight);
+    CalcBoundingBox((vX + vWidth), (vY + vHeight));
+} // end of wxDC::DoDrawText
+
+void wxDC::DrawAnyText(
+  const wxString&                   rsText
+, wxCoord                           vX
+, wxCoord                           vY
+)
+{
+    int                             nOldBackground = 0;
+    POINTL                          vPtlStart;
+    LONG                            lHits;
+    wxCoord                         vTextX = 0;
+    wxCoord                         vTextY = 0;
+
+    //
+    // prepare for drawing the text
+    //
+
+    //
+    // Set text color attributes
+    //
+    if (m_textForegroundColour.Ok())
+    {
+        SetTextColor( m_hPS
+                     ,(int)m_textForegroundColour.GetPixel()
+                    );
+    }
+
+    if (m_textBackgroundColour.Ok())
+    {
+        nOldBackground = SetTextBkColor( m_hPS
+                                        ,(int)m_textBackgroundColour.GetPixel()
+                                       );
+    }
+    SetBkMode( m_hPS
+              ,m_backgroundMode
+             );
+    GetTextExtent( rsText
+                  ,&vTextX
+                  ,&vTextY
+                 );
+    vPtlStart.x = vX;
+    vPtlStart.y = OS2Y(vY,vTextY);
+
+    lHits = ::GpiCharStringAt( m_hPS
+                              ,&vPtlStart
+                              ,rsText.length()
+                              ,(PCH)rsText.c_str()
+                             );
+    if (lHits != GPI_OK)
+    {
+        wxLogLastError(wxT("TextOut"));
+    }
+
+    //
+    // Restore the old parameters (text foreground colour may be left because
+    // it never is set to anything else, but background should remain
+    // transparent even if we just drew an opaque string)
+    //
+    if (m_textBackgroundColour.Ok())
+            SetTextBkColor( m_hPS
+                           ,nOldBackground
+                          );
+    SetBkMode( m_hPS
+              ,wxTRANSPARENT
+             );

 }
 
 }
 

-void wxDC::Clear()
+void wxDC::DoDrawRotatedText(
+  const wxString&                   rsText
+, wxCoord                           vX
+, wxCoord                           vY
+, double                            dAngle
+)

 {
 {

-   // TODO
+    if (dAngle == 0.0)
+    {
+        DoDrawText( rsText
+                   ,vX
+                   ,vY
+                  );
+    }
+
+   // TODO:
+   /*
+    if ( angle == 0.0 )
+    {
+        DoDrawText(text, x, y);
+    }
+    else
+    {
+        LOGFONT lf;
+        wxFillLogFont(&lf, &m_font);
+
+        // GDI wants the angle in tenth of degree
+        long angle10 = (long)(angle * 10);
+        lf.lfEscapement = angle10;
+        lf. lfOrientation = angle10;
+
+        HFONT hfont = ::CreateFontIndirect(&lf);
+        if ( !hfont )
+        {
+            wxLogLastError("CreateFont");
+        }
+        else
+        {
+            HFONT hfontOld = ::SelectObject(GetHdc(), hfont);
+
+            DrawAnyText(text, x, y);
+
+            (void)::SelectObject(GetHdc(), hfontOld);
+        }
+
+        // call the bounding box by adding all four vertices of the rectangle
+        // containing the text to it (simpler and probably not slower than
+        // determining which of them is really topmost/leftmost/...)
+        wxCoord w, h;
+        GetTextExtent(text, &w, &h);
+
+        double rad = DegToRad(angle);
+
+        // "upper left" and "upper right"
+        CalcBoundingBox(x, y);
+        CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
+        CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
+
+        // "bottom left" and "bottom right"
+        x += (wxCoord)(h*sin(rad));
+        y += (wxCoord)(h*cos(rad));
+        CalcBoundingBox(x, y);
+        CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
+    }
+*/

 }
 
 }
 

-void wxDC::SetFont(const wxFont& font)
+// ---------------------------------------------------------------------------
+// set GDI objects
+// ---------------------------------------------------------------------------
+
+void wxDC::SetPalette(
+  const wxPalette&                  rPalette
+)

 {
 {

-   // TODO
-}
+    if (m_hOldFont)
+    {
+        m_hOldFont = 0;
+    }
+    m_palette = rPalette;
+    if (!rPalette.Ok())
+    {
+        if (m_hOldFont)
+        {
+            m_hOldFont = 0;
+        }
+    }
+    HPALETTE                    hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
+    if (!m_hOldPalette)
+        m_hOldPalette = (WXHPALETTE)hOldPal;
+} // end of wxDC::SetPalette
+
+void wxDC::SetFont(
+  const wxFont&                     rFont
+)
+{
+    //
+    // Set the old object temporarily, in case the assignment deletes an object
+    // that's not yet selected out.
+    //
+    if (m_hOldFont)
+    {
+        m_hOldFont = 0;
+    }
+    m_font = rFont;
+    if (!rFont.Ok())
+    {
+        m_hOldFont = 0;
+    }
+
+    m_font.SetPS(m_hPS); // this will realize the font

 
 

-void wxDC::SetPen(const wxPen& pen)
+    if (m_font.Ok())
+    {
+        HFONT                       hFont = m_font.GetResourceHandle();
+        if (hFont == (HFONT) NULL)
+        {
+            wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
+        }
+        if (!m_hOldFont)
+            m_hOldFont = (WXHFONT) hFont;
+    }
+} // end of wxDC::SetFont
+
+void wxDC::SetPen(
+  const wxPen&                      rPen
+)

 {
 {

-   // TODO
+    wxCHECK_RET( Ok(), wxT("invalid window dc") );
+
+    if (m_pen == rPen)
+        return;
+    m_pen = rPen;
+    if (!m_pen.Ok())
+        return;
+
+    if (m_hOldPen)
+        m_hOldPen = 0L;
+    m_pen = rPen;
+
+    if (!m_pen.Ok())
+    {
+        if (m_hOldPen)
+        {
+            m_pen.SetPS((HPS)m_hOldPen);
+        }
+        m_hOldPen = 0L;
+    }
+
+    if (m_pen.Ok())
+    {
+        if (m_pen.GetResourceHandle())
+        {
+            m_pen.SetPS(m_hPS);
+            if (!m_hOldPen)
+                m_hOldPen = m_pen.GetPS();
+        }
+    }

 }
 }

-void wxDC::SetBrush(const wxBrush& brush)
+
+void wxDC::SetBrush(
+  const wxBrush&                    rBrush
+)

 {
 {

-   // TODO
-}
+    wxCHECK_RET( Ok(), wxT("invalid window dc") );
+
+    if (m_hOldBrush)
+        m_hOldBrush = 0L;
+    m_brush = rBrush;
+    if (!m_brush.Ok())
+    if (m_brush == rBrush)
+        return;
+    if (!m_brush.Ok())
+        if (m_hOldBrush)
+            m_hOldBrush = 0L;
+
+    if (!m_brush.Ok())
+    {
+        if (m_hOldBrush)
+        {
+            m_brush.SetPS((HPS)m_hOldBrush);
+        }
+        m_hOldBrush = 0L;
+    }
+
+    if (m_brush.Ok())
+    {
+        if (m_brush.GetResourceHandle())
+        {
+            m_brush.SetPS(m_hPS);
+            if (!m_hOldBrush)
+                m_hOldBrush = (WXHWND)m_brush.GetPS();
+        }
+    }
+} // end of wxDC::SetBrush

 
 

-void wxDC::SetBackground(const wxBrush& brush)
+void wxDC::SetBackground(
+  const wxBrush&                    rBrush
+)

 {
 {

-   // TODO
-}
+    m_backgroundBrush = rBrush;
+    if (!m_backgroundBrush.Ok())
+        return;
+    if (m_pCanvas)
+    {
+        bool                        bCustomColours = TRUE;
+
+        //
+        // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to
+        // change background colours from the control-panel specified colours.
+        //
+        if (m_pCanvas->IsKindOf(CLASSINFO(wxWindow)) &&
+            ((m_pCanvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS))
+            bCustomColours = FALSE;
+        if (bCustomColours)
+        {
+            if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
+            {
+                m_pCanvas->SetTransparent(TRUE);
+            }
+            else
+            {
+                //
+                // Setting the background brush of a DC
+                // doesn't affect the window background colour. However,
+                // I'm leaving in the transparency setting because it's needed by
+                // various controls (e.g. wxStaticText) to determine whether to draw
+                // transparently or not. TODO: maybe this should be a new function
+                // wxWindow::SetTransparency(). Should that apply to the child itself, or the
+                // parent?
+                // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
+                //
+                m_pCanvas->SetTransparent(FALSE);
+            }
+        }
+    }
+    COLORREF                        vNewColor = m_backgroundBrush.GetColour().GetPixel();
+    (void)::GpiSetBackColor((HPS)m_hPS, (LONG)vNewColor);
+} // end of wxDC::SetBackground

 
 

-void wxDC::SetLogicalFunction(int function)
+void wxDC::SetBackgroundMode(
+  int                               nMode
+)

 {
 {

-   // TODO
-}
+    m_backgroundMode = nMode;
+} // end of wxDC::SetBackgroundMode

 
 

-void wxDC::SetBackgroundMode(int mode)
+void wxDC::SetLogicalFunction(
+  int                               nFunction
+)

 {
 {

-   // TODO
-}
+    m_logicalFunction = nFunction;
+    SetRop((WXHDC)m_hDC);
+} // wxDC::SetLogicalFunction

 
 

-void wxDC::SetPalette(const wxPalette& palette)
+void wxDC::SetRop(
+  WXHDC                             hDC
+)

 {
 {

-   // TODO
-}
+    if (!hDC || m_logicalFunction < 0)
+        return;

 
 

-void wxDC::DoFloodFill( long x
-                       ,long y
-                       ,const wxColour& col
-                       ,int style
-                      )
+    LONG                            lCRop;
+    switch (m_logicalFunction)
+    {
+        case wxXOR:
+            lCRop = FM_XOR;
+            break;
+
+        case wxINVERT:
+            lCRop = FM_INVERT;
+            break;
+
+        case wxOR_REVERSE:
+            lCRop = FM_MERGESRCNOT;
+            break;
+
+        case wxAND_REVERSE:
+            lCRop = FM_NOTMASKSRC;
+            break;
+
+        case wxCLEAR:
+            lCRop = FM_ONE;
+            break;
+
+        case wxSET:
+            lCRop = FM_ZERO;
+            break;
+
+        case wxSRC_INVERT:
+            lCRop = FM_MERGENOTSRC;
+            break;
+
+        case wxOR_INVERT:
+            lCRop = FM_MERGESRCNOT;
+            break;
+
+        case wxAND:
+            lCRop = FM_AND;
+            break;
+
+        case wxOR:
+            lCRop = FM_OR;
+            break;
+
+        case wxAND_INVERT:
+            lCRop = FM_SUBTRACT;
+            break;
+
+        case wxEQUIV:
+        case wxNAND:
+        case wxCOPY:
+        default:
+            lCRop = FM_OVERPAINT;
+            break;
+    }
+    ::GpiSetMix((HPS)hDC, lCRop);
+} // end of wxDC::SetRop
+
+bool wxDC::StartDoc(
+  const wxString&                   rsMessage
+)

 {
 {

-   // TODO
-}
+    // We might be previewing, so return TRUE to let it continue.
+    return TRUE;
+} // end of wxDC::StartDoc

 
 

-bool wxDC::DoGetPixel(long x, long y, wxColour *col) const
+void wxDC::EndDoc()

 {
 {

-   // TODO
-   return(TRUE);
-}
+} // end of wxDC::EndDoc

 
 

-void wxDC::DoDrawPoint(long x, long y)
+void wxDC::StartPage()

 {
 {

-   // TODO
-}
+} // end of wxDC::StartPage

 
 

-void wxDC::DoDrawLine(long x1, long y1, long x2, long y2)
+void wxDC::EndPage()

 {
 {

-   // TODO
-}
+} // end of wxDC::EndPage

 
 

-void wxDC::DoDrawArc( long x1, long y1
-                     ,long x2, long y2
-                     ,long xc, long yc
-                    )
+// ---------------------------------------------------------------------------
+// text metrics
+// ---------------------------------------------------------------------------
+
+wxCoord wxDC::GetCharHeight() const

 {
 {

-   // TODO
+    FONTMETRICS                     vFM; // metrics structure
+
+    ::GpiQueryFontMetrics( m_hPS
+                          ,sizeof(FONTMETRICS)
+                          ,&vFM
+                         );
+    return YDEV2LOGREL(vFM.lXHeight);

 }
 
 }
 

-void wxDC::DoDrawEllipticArc( long x
-                             ,long y
-                             ,long w
-                             ,long h
-                             ,double sa
-                             ,double ea
-                            )
+wxCoord wxDC::GetCharWidth() const

 {
 {

-   // TODO
+    FONTMETRICS                     vFM; // metrics structure
+
+    ::GpiQueryFontMetrics( m_hPS
+                          ,sizeof(FONTMETRICS)
+                          ,&vFM
+                         );
+    return XDEV2LOGREL(vFM.lAveCharWidth);

 }
 
 }
 

-void wxDC::DoDrawRectangle(long x, long y, long width, long height)
+void wxDC::DoGetTextExtent(
+  const wxString&                   rsString
+, wxCoord*                          pvX
+, wxCoord*                          pvY
+, wxCoord*                          pvDescent
+, wxCoord*                          pvExternalLeading
+, wxFont*                           pTheFont
+) const

 {
 {

-   // TODO
+    POINTL                          avPoint[TXTBOX_COUNT];
+    POINTL                          vPtMin;
+    POINTL                          vPtMax;
+    int                             i;
+    int                             l;
+    FONTMETRICS                     vFM; // metrics structure
+    BOOL                            bRc;
+    char*                           pStr;
+    ERRORID                         vErrorCode; // last error id code
+    wxFont*                         pFontToUse = (wxFont*)pTheFont;
+
+    char                            zMsg[128]; // DEBUG
+    wxString                        sError;
+
+    if (!pFontToUse)
+        pFontToUse = (wxFont*)&m_font;
+    l = rsString.length();
+    pStr = (PCH) rsString.c_str();
+
+    //
+    // In world coordinates.
+    //
+    bRc = ::GpiQueryTextBox( m_hPS
+                            ,l
+                            ,pStr
+                            ,TXTBOX_COUNT // return maximum information
+                            ,avPoint      // array of coordinates points
+                           );
+    if(!bRc)
+    {
+       vErrorCode = ::WinGetLastError(wxGetInstance());
+       sError = wxPMErrorToStr(vErrorCode);
+       // DEBUG
+       sprintf(zMsg, "GpiQueryTextBox for %s: failed with Error: %x - %s", pStr, vErrorCode, sError.c_str());
+       (void)wxMessageBox( "wxWindows Menu sample"
+                          ,zMsg
+                          ,wxICON_INFORMATION
+                         );
+    }
+
+    vPtMin.x = avPoint[0].x;
+    vPtMax.x = avPoint[0].x;
+    vPtMin.y = avPoint[0].y;
+    vPtMax.y = avPoint[0].y;
+    for (i = 1; i < 4; i++)
+    {
+        if(vPtMin.x > avPoint[i].x) vPtMin.x = avPoint[i].x;
+        if(vPtMin.y > avPoint[i].y) vPtMin.y = avPoint[i].y;
+        if(vPtMax.x < avPoint[i].x) vPtMax.x = avPoint[i].x;
+        if(vPtMax.y < avPoint[i].y) vPtMax.y = avPoint[i].y;
+    }
+    ::GpiQueryFontMetrics( m_hPS
+                          ,sizeof(FONTMETRICS)
+                          ,&vFM
+                         );
+
+    if (pvX)
+        *pvX = (wxCoord)(vPtMax.x - vPtMin.x + 1);
+    if (pvY)
+        *pvY = (wxCoord)(vPtMax.y - vPtMin.y + 1);
+    if (pvDescent)
+        *pvDescent = vFM.lMaxDescender;
+    if (pvExternalLeading)
+        *pvExternalLeading = vFM.lExternalLeading;

 }
 
 }
 

-void wxDC::DoDrawRoundedRectangle( long x, long y
-                                  ,long width, long height
-                                  ,double radius
-                                 )
+void wxDC::SetMapMode(
+  int                               nMode
+)

 {
 {

-   // TODO
-}
+    int                             nPixelWidth = 0;
+    int                             nPixelHeight = 0;
+    int                             nMmWidth = 1;
+    int                             nMmHeight = 1;
+    LONG                            lArray[CAPS_VERTICAL_RESOLUTION];
+
+    m_mappingMode = nMode;
+
+    if(::DevQueryCaps( m_hDC
+                      ,CAPS_FAMILY
+                      ,CAPS_VERTICAL_RESOLUTION
+                      ,lArray
+                     ))
+    {
+        LONG                        lHorzRes;
+        LONG                        lVertRes;
+
+        nPixelWidth    = lArray[CAPS_WIDTH];
+        nPixelHeight   = lArray[CAPS_HEIGHT];
+        lHorzRes  = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
+        lVertRes  = lArray[CAPS_VERTICAL_RESOLUTION];   // returns pel/meter
+        nMmWidth  = (lHorzRes/1000) * nPixelWidth;
+        nMmWidth = (lVertRes/1000) * nPixelHeight;
+    }
+    if ((nPixelWidth == 0) || (nPixelHeight == 0) || (nMmWidth == 0) || (nMmHeight == 0))
+    {
+        return;
+    }
+
+    double                          dMm2pixelsX = nPixelWidth/nMmWidth;
+    double                          dMm2pixelsY = nPixelHeight/nMmHeight;
+
+    switch (nMode)
+    {
+        case wxMM_TWIPS:
+            m_logicalScaleX = (twips2mm * dMm2pixelsX);
+            m_logicalScaleY = (twips2mm * dMm2pixelsY);
+            break;
+
+        case wxMM_POINTS:
+            m_logicalScaleX = (pt2mm * dMm2pixelsX);
+            m_logicalScaleY = (pt2mm * dMm2pixelsY);
+            break;
+
+        case wxMM_METRIC:
+            m_logicalScaleX = dMm2pixelsX;
+            m_logicalScaleY = dMm2pixelsY;
+            break;
+
+        case wxMM_LOMETRIC:
+            m_logicalScaleX = (dMm2pixelsX/10.0);
+            m_logicalScaleY = (dMm2pixelsY/10.0);
+            break;
+
+        case wxMM_TEXT:
+        default:
+            m_logicalScaleX = 1.0;
+            m_logicalScaleY = 1.0;
+            break;
+    }
+    SIZEL                           vSize;
+    ULONG                           ulOptions;

 
 

-void wxDC::DoDrawEllipse(long x, long y, long width, long height)
+    ulOptions = ::GpiQueryPS(m_hPS, &vSize);
+    if (!ulOptions & PU_ARBITRARY)
+    {
+        ulOptions = PU_ARBITRARY | GPIF_DEFAULT;
+        ::GpiSetPS(m_hPS, &vSize, ulOptions);
+    }
+    m_nWindowExtX = (int)MS_XDEV2LOGREL(VIEWPORT_EXTENT);
+    m_nWindowExtY = (int)MS_YDEV2LOGREL(VIEWPORT_EXTENT);
+    // ????
+}; // end of wxDC::SetMapMode
+
+void wxDC::SetUserScale(
+  double                            dX
+, double                            dY
+)

 {
 {

-   // TODO
-}
+    m_userScaleX = dX;
+    m_userScaleY = dY;

 
 

-void wxDC::DoCrossHair(long x, long y)
+    SetMapMode(m_mappingMode);
+} // end of wxDC::SetUserScale
+
+void wxDC::SetAxisOrientation(
+  bool                              bXLeftRight
+, bool                              bYBottomUp
+)

 {
 {

-   // TODO
-}
+    m_signX = bXLeftRight ? 1 : -1;
+    m_signY = bYBottomUp ? -1 : 1;

 
 

-void wxDC::DoDrawIcon(const wxIcon& icon, long x, long y)
+    SetMapMode(m_mappingMode);
+} // end of wxDC::SetAxisOrientation
+
+void wxDC::SetSystemScale(
+  double                            dX
+, double                            dY
+)

 {
 {

-   // TODO
-}
+    m_scaleX = dX;
+    m_scaleY = dY;
+
+    SetMapMode(m_mappingMode);
+} // end of wxDC::SetSystemScale

 
 

-void wxDC::DoDrawBitmap( const wxBitmap &bmp
-                        ,long x, long y
-                        ,bool useMask
-                       )
+void wxDC::SetLogicalOrigin(
+  wxCoord                           vX
+, wxCoord                           vY
+)

 {
 {

-   // TODO
+    RECTL                           vRect;
+
+    ::GpiQueryPageViewport( m_hPS
+                           ,&vRect
+                          );
+    vRect.xRight -= vX;
+    vRect.yTop += vY;
+    vRect.xLeft = vX;
+    vRect.yBottom = vY;
+    ::GpiSetPageViewport( m_hPS
+                         ,&vRect
+                        );
+}; // end of wxDC::SetLogicalOrigin
+
+void wxDC::SetDeviceOrigin(
+  wxCoord                           vX
+, wxCoord                           vY
+)
+{
+    RECTL                           vRect;
+
+    m_deviceOriginX = vX;
+    m_deviceOriginY = vY;
+    ::GpiQueryPageViewport( m_hPS
+                           ,&vRect
+                          );
+    vRect.xLeft += vX;
+    vRect.xRight += vX;
+    vRect.yBottom -= vY;
+    vRect.yTop -= vY;
+    ::GpiSetPageViewport( m_hPS
+                         ,&vRect
+                        );
+}; // end of wxDC::SetDeviceOrigin
+
+// ---------------------------------------------------------------------------
+// coordinates transformations
+// ---------------------------------------------------------------------------
+
+wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
+{
+    return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);

 }
 
 }
 

-void wxDC::DoDrawText(const wxString& text, long x, long y)
+wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const

 {
 {

-   // TODO
+    return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX));

 }
 
 }
 

-bool wxDC::DoBlit( long xdest
-                  ,long ydest
-                  ,long width
-                  ,long height
-                  ,wxDC *source
-                  ,long xsrc
-                  ,long ysrc
-                  ,int  rop
-                  ,bool useMask
-                 )
-{
-   // TODO
-   return(TRUE);
+wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
+{
+    return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);

 }
 
 }
 

-void wxDC::DoDrawLines( int n, wxPoint points[]
-                       ,long xoffset, long yoffset
-                      )
+wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const

 {
 {

-   // TODO
+    return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY));

 }
 
 }
 

-void wxDC::DoDrawPolygon(int n, wxPoint points[]
-                         ,long xoffset, long yoffset
-                         ,int fillStyle
-                        )
+wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const

 {
 {

-   // TODO
+    return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);

 }
 
 }
 

-void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
+wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const

 {
 {

-   // TODO
+    return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX);

 }
 
 }
 

-void wxDC::DoSetClippingRegion( long x, long y
-                               ,long width, long height
-                              )
+wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const

 {
 {

-   // TODO
+    return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);

 }
 
 }
 

-#if wxUSE_SPLINES
-void wxDC::DoDrawSpline(wxList *points)
+wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const

 {
 {

-   // TODO
+    return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY);

 }
 }

-#endif

 
 

-void wxDC::SetRop(WXHDC dc)
+// ---------------------------------------------------------------------------
+// bit blit
+// ---------------------------------------------------------------------------
+
+bool wxDC::DoBlit(
+  wxCoord                           vXdest
+, wxCoord                           vYdest
+, wxCoord                           vWidth
+, wxCoord                           vHeight
+, wxDC*                             pSource
+, wxCoord                           vXsrc
+, wxCoord                           vYsrc
+, int                               nRop
+, bool                              bUseMask
+, wxCoord                           vXsrcMask
+, wxCoord                           vYsrcMask
+)

 {
 {

-    if (!dc || m_logicalFunction < 0)
-        return;
+    wxMask*                         pMask = NULL;
+    CHARBUNDLE                      vCbnd;
+    COLORREF                        vOldTextColor;
+    COLORREF                        vOldBackground = ::GpiQueryBackColor(m_hPS);

 
 

-    int c_rop;
-    // These may be wrong
-    switch (m_logicalFunction)
+    if (bUseMask)

     {
     {

-// TODO: Figure this stuff out
-        //    case wxXOR: c_rop = R2_XORPEN; break;
-//    case wxXOR: c_rop = R2_NOTXORPEN; break;
-//    case wxINVERT: c_rop = R2_NOT; break;
-//    case wxOR_REVERSE: c_rop = R2_MERGEPENNOT; break;
-//    case wxAND_REVERSE: c_rop = R2_MASKPENNOT; break;
-//    case wxCLEAR: c_rop = R2_WHITE; break;
-//    case wxSET: c_rop = R2_BLACK; break;
-//    case wxSRC_INVERT: c_rop = R2_NOTCOPYPEN; break;
-//    case wxOR_INVERT: c_rop = R2_MERGENOTPEN; break;
-//    case wxAND: c_rop = R2_MASKPEN; break;
-//    case wxOR: c_rop = R2_MERGEPEN; break;
-//    case wxAND_INVERT: c_rop = R2_MASKNOTPEN; break;
-//    case wxEQUIV:
-//    case wxNAND:
-//    case wxCOPY:
-    default:
-//      c_rop = R2_COPYPEN;
-        break;
-    }
-//    SetROP2((HDC) dc, c_rop);
-}
+        const wxBitmap&             rBmp = pSource->m_vSelectedBitmap;

 
 

-void wxDC::DoClipping(WXHDC dc)
-{
-    if (m_clipping && dc)
+        pMask = rBmp.GetMask();
+        if (!(rBmp.Ok() && pMask && pMask->GetMaskBitmap()))
+        {
+            bUseMask = FALSE;
+        }
+    }
+
+    ::GpiQueryAttrs( m_hPS
+                    ,PRIM_CHAR
+                    ,CBB_COLOR
+                    ,&vCbnd
+                   );
+    vOldTextColor = (COLORREF)vCbnd.lColor;
+
+    if (m_textForegroundColour.Ok())

     {
     {

-//      TODO:
-//      IntersectClipRect((HDC) dc, XLOG2DEV(m_clipX1), YLOG2DEV(m_clipY1),
-//                                  XLOG2DEV(m_clipX2), YLOG2DEV(m_clipY2));
+        vCbnd.lColor = (LONG)m_textForegroundColour.GetPixel();
+        ::GpiSetAttrs( m_hPS           // presentation-space handle
+                      ,PRIM_CHAR       // Char primitive.
+                      ,CBB_COLOR       // sets color.
+                      ,0
+                      ,&vCbnd          // buffer for attributes.
+                     );
+    }
+    if (m_textBackgroundColour.Ok())
+    {
+        ::GpiSetBackColor(m_hPS, (LONG)m_textBackgroundColour.GetPixel());

     }
     }

-}

 
 

-// This will select current objects out of the DC,
-// which is what you have to do before deleting the
-// DC.
-void wxDC::SelectOldObjects(WXHDC dc)
-{
-    if (dc)
+    LONG                            lRop = ROP_SRCCOPY;
+
+    switch (nRop)

     {
     {

-        if (m_oldBitmap)
+        case wxXOR:          lRop = ROP_SRCINVERT;        break;
+        case wxINVERT:       lRop = ROP_DSTINVERT;        break;
+        case wxOR_REVERSE:   lRop = 0x00DD0228;           break;
+        case wxAND_REVERSE:  lRop = ROP_SRCERASE;         break;
+        case wxCLEAR:        lRop = ROP_ZERO;             break;
+        case wxSET:          lRop = ROP_ONE;              break;
+        case wxOR_INVERT:    lRop = ROP_MERGEPAINT;       break;
+        case wxAND:          lRop = ROP_SRCAND;           break;
+        case wxOR:           lRop = ROP_SRCPAINT;         break;
+        case wxEQUIV:        lRop = 0x00990066;           break;
+        case wxNAND:         lRop = 0x007700E6;           break;
+        case wxAND_INVERT:   lRop = 0x00220326;           break;
+        case wxCOPY:         lRop = ROP_SRCCOPY;          break;
+        case wxNO_OP:        lRop = ROP_NOTSRCERASE;      break;
+        case wxSRC_INVERT:   lRop = ROP_SRCINVERT;        break;
+        case wxNOR:          lRop = ROP_NOTSRCCOPY;       break;
+        default:
+           wxFAIL_MSG( wxT("unsupported logical function") );
+           return FALSE;
+    }
+
+    bool                            bSuccess;
+
+    if (bUseMask)
+    {
+        //
+        // Blit bitmap with mask
+        //
+
+        //
+        // Create a temp buffer bitmap and DCs/PSs to access it and the mask
+        //
+        HDC                             hDCMask;
+        HDC                             hDCBuffer;
+        HPS                             hPSMask;
+        HPS                             hPSBuffer;
+        DEVOPENSTRUC                    vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
+        BITMAPINFOHEADER2               vBmpHdr;
+        HBITMAP                         hBufBitmap;
+        SIZEL                           vSize = {0, 0};
+        LONG                            rc;
+
+        memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
+        vBmpHdr.cbFix     = sizeof(BITMAPINFOHEADER2);
+        vBmpHdr.cx        = vWidth;
+        vBmpHdr.cy        = vHeight;
+        vBmpHdr.cPlanes   = 1;
+        vBmpHdr.cBitCount = 24;
+
+#if wxUSE_DC_CACHEING
+        if (TRUE)

         {
         {

-//            ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
-            if (m_selectedBitmap.Ok())
-            {
-                m_selectedBitmap.SetSelectedInto(NULL);
-            }
+            //
+            // create a temp buffer bitmap and DCs to access it and the mask
+            //
+            wxDCCacheEntry*         pDCCacheEntry1    = FindDCInCache( NULL
+                                                                      ,pSource->GetHPS()
+                                                                     );
+            wxDCCacheEntry*         pDCCacheEntry2    = FindDCInCache( pDCCacheEntry1
+                                                                      ,GetHPS()
+                                                                     );
+            wxDCCacheEntry*         pBitmapCacheEntry = FindBitmapInCache( GetHPS()
+                                                                          ,vWidth
+                                                                          ,vHeight
+                                                                         );
+
+            hPSMask = pDCCacheEntry1->m_hPS;
+            hDCBuffer = (HDC)pDCCacheEntry2->m_hPS;
+            hBufBitmap = (HBITMAP)pBitmapCacheEntry->m_hBitmap;

         }
         }

-        m_oldBitmap = 0;
-        if (m_oldPen)
+        else
+#endif

         {
         {

-//            ::SelectObject((HDC) dc, (HPEN) m_oldPen);
+            hDCMask = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
+            hDCBuffer = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
+            hPSMask = ::GpiCreatePS(vHabmain, hDCMask, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
+            hPSBuffer = ::GpiCreatePS(vHabmain, hDCBuffer, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
+            hBufBitmap = ::GpiCreateBitmap(GetHPS(), &vBmpHdr, 0L, NULL, NULL);

         }
         }

-        m_oldPen = 0;
-        if (m_oldBrush)
+
+        POINTL                          aPoint1[4] = { 0, 0
+                                                      ,vWidth, vHeight
+                                                      ,vXdest, vYdest
+                                                      ,vXdest + vWidth, vYdest + vHeight
+                                                     };
+        POINTL                          aPoint2[4] = { 0, 0
+                                                      ,vWidth, vHeight
+                                                      ,vXsrc, vYsrc
+                                                      ,vXsrc + vWidth, vYsrc + vHeight
+                                                     };
+        POINTL                          aPoint3[4] = { vXdest, vYdest
+                                                      ,vXdest + vWidth, vYdest + vHeight
+                                                      ,vXsrc, vYsrc
+                                                      ,vXsrc + vWidth, vYsrc + vHeight
+                                                     };
+        POINTL                          aPoint4[4] = { vXdest, vYdest
+                                                      ,vXdest + vWidth, vYdest + vHeight
+                                                      ,0, 0
+                                                      ,vWidth, vHeight
+                                                     };
+        ::GpiSetBitmap(hPSMask, (HBITMAP) pMask->GetMaskBitmap());
+        ::GpiSetBitmap(hPSBuffer, (HBITMAP) hBufBitmap);
+
+        //
+        // Copy dest to buffer
+        //
+        rc = ::GpiBitBlt( hPSBuffer
+                         ,GetHPS()
+                         ,4L
+                         ,aPoint1
+                         ,ROP_SRCCOPY
+                         ,BBO_IGNORE
+                        );
+        if (rc == GPI_ERROR)

         {
         {

-//            ::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
+            wxLogLastError(wxT("BitBlt"));

         }
         }

-        m_oldBrush = 0;
-        if (m_oldFont)
+
+        //
+        // Copy src to buffer using selected raster op
+        //
+        rc = ::GpiBitBlt( hPSBuffer
+                         ,GetHPS()
+                         ,4L
+                         ,aPoint2
+                         ,lRop
+                         ,BBO_IGNORE
+                        );
+        if (rc == GPI_ERROR)

         {
         {

-//            ::SelectObject((HDC) dc, (HFONT) m_oldFont);
+            wxLogLastError(wxT("BitBlt"));

         }
         }

-        m_oldFont = 0;
-        if (m_oldPalette)
+
+        //
+        // Set masked area in buffer to BLACK (pixel value 0)
+        //
+        COLORREF                        vPrevBkCol = ::GpiQueryBackColor(GetHPS());
+        COLORREF                        vPrevCol = ::GpiQueryColor(GetHPS());
+
+        ::GpiSetBackColor(GetHPS(), OS2RGB(255, 255, 255));
+        ::GpiSetColor(GetHPS(), OS2RGB(0, 0, 0));
+
+        rc = ::GpiBitBlt( hPSBuffer
+                         ,hPSMask
+                         ,4L
+                         ,aPoint2
+                         ,ROP_SRCAND
+                         ,BBO_IGNORE
+                        );
+        if (rc == GPI_ERROR)

         {
         {

-//            ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, TRUE);
+            wxLogLastError(wxT("BitBlt"));

         }
         }

-        m_oldPalette = 0;
-    }

 
 

-    m_brush = wxNullBrush;
-    m_pen = wxNullPen;
-    m_palette = wxNullPalette;
-    m_font = wxNullFont;
-    m_backgroundBrush = wxNullBrush;
-    m_selectedBitmap = wxNullBitmap;
+        //
+        // Set unmasked area in dest to BLACK
+        //
+        ::GpiSetBackColor(GetHPS(), OS2RGB(0, 0, 0));
+        ::GpiSetColor(GetHPS(), OS2RGB(255, 255, 255));
+        rc = ::GpiBitBlt( GetHPS()
+                         ,hPSMask
+                         ,4L
+                         ,aPoint3
+                         ,ROP_SRCAND
+                         ,BBO_IGNORE
+                        );
+        if (rc == GPI_ERROR)
+        {
+            wxLogLastError(wxT("BitBlt"));
+        }
+
+        //
+        // Restore colours to original values
+        //
+        ::GpiSetBackColor(GetHPS(), vPrevBkCol);
+        ::GpiSetColor(GetHPS(), vPrevCol);
+
+        //
+        // OR buffer to dest
+        //
+        rc = ::GpiBitBlt( GetHPS()
+                         ,hPSMask
+                         ,4L
+                         ,aPoint4
+                         ,ROP_SRCPAINT
+                         ,BBO_IGNORE
+                        );
+        if (rc == GPI_ERROR)
+        {
+            bSuccess = FALSE;
+            wxLogLastError(wxT("BitBlt"));
+        }
+
+        //
+        // Tidy up temporary DCs and bitmap
+        //
+        ::GpiSetBitmap(hPSMask, NULLHANDLE);
+        ::GpiSetBitmap(hPSBuffer, NULLHANDLE);
+#if !wxUSE_DC_CACHEING
+        ::GpiDestroyPS(hPSMask);
+        ::GpiDestroyPS(hPSBuffer);
+        ::DevCloseDC(hDCMask);
+        ::DevCloseDC(hDCBuffer);
+        ::GpiDeleteBitmap(hBufBitmap);
+#endif
+        bSuccess = TRUE;
+    }
+    else // no mask, just BitBlt() it
+    {
+        POINTL                          aPoint[4] = { vXdest, vYdest
+                                                     ,vXdest + vWidth, vYdest + vHeight
+                                                     ,vXsrc, vYsrc
+                                                     ,vXsrc + vWidth, vYsrc + vHeight
+                                                    };
+
+        bSuccess = (::GpiBitBlt( m_hPS
+                                ,pSource->GetHPS()
+                                ,4L
+                                ,aPoint
+                                ,lRop
+                                ,BBO_IGNORE
+                               ) != GPI_ERROR);
+        if (!bSuccess )
+        {
+            wxLogLastError(wxT("BitBlt"));
+        }
+    }
+    vCbnd.lColor = (LONG)vOldTextColor;
+    ::GpiSetAttrs( m_hPS           // presentation-space handle
+                  ,PRIM_CHAR       // Char primitive.
+                  ,CBB_COLOR       // sets color.
+                  ,0
+                  ,&vCbnd          // buffer for attributes.
+                 );
+    ::GpiSetBackColor(m_hPS, (LONG)vOldBackground);
+    return bSuccess;

 }
 
 }
 

-//
-// Private functions
-//
+void wxDC::DoGetSize(
+  int*                              pnWidth
+, int*                              pnHeight
+) const
+{
+    LONG                            lArray[CAPS_HEIGHT];

 
 

+    if(::DevQueryCaps( m_hDC
+                      ,CAPS_FAMILY
+                      ,CAPS_HEIGHT
+                      ,lArray
+                     ))
+    {
+        *pnWidth  = lArray[CAPS_WIDTH];
+        *pnHeight = lArray[CAPS_HEIGHT];
+    }
+}; // end of wxDC::DoGetSize(
+
+void wxDC::DoGetSizeMM(
+  int*                              pnWidth
+, int*                              pnHeight
+) const
+{
+    LONG                            lArray[CAPS_VERTICAL_RESOLUTION];
+
+    if(::DevQueryCaps( m_hDC
+                      ,CAPS_FAMILY
+                      ,CAPS_VERTICAL_RESOLUTION
+                      ,lArray
+                     ))
+    {
+        int                         nWidth;
+        int                         nHeight;
+        int                         nHorzRes;
+        int                         nVertRes;
+
+        nWidth    = lArray[CAPS_WIDTH];
+        nHeight   = lArray[CAPS_HEIGHT];
+        nHorzRes  = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
+        nVertRes  = lArray[CAPS_VERTICAL_RESOLUTION];   // returns pel/meter
+        nWidth  = (nHorzRes/1000) * nWidth;
+        nHeight = (nVertRes/1000) * nHeight;
+    }
+}; // end of wxDC::DoGetSizeMM
+
+wxSize wxDC::GetPPI() const
+{
+    LONG                            lArray[CAPS_VERTICAL_RESOLUTION];
+    int                             nWidth;
+    int                             nHeight;
+
+    if(::DevQueryCaps( m_hDC
+                      ,CAPS_FAMILY
+                      ,CAPS_VERTICAL_RESOLUTION
+                      ,lArray
+                     ))
+    {
+        int                         nPelWidth;
+        int                         nPelHeight;
+        int                         nHorzRes;
+        int                         nVertRes;
+
+        nPelWidth  = lArray[CAPS_WIDTH];
+        nPelHeight = lArray[CAPS_HEIGHT];
+        nHorzRes   = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
+        nVertRes   = lArray[CAPS_VERTICAL_RESOLUTION];   // returns pel/meter
+        nWidth   = (nHorzRes/39.3) * nPelWidth;
+        nHeight  = (nVertRes/39.3) * nPelHeight;
+    }
+    return (wxSize(nWidth,nHeight));
+} // end of wxDC::GetPPI
+
+void wxDC::SetLogicalScale(
+  double                            dX
+, double                            dY
+)
+{
+    m_logicalScaleX = dX;
+    m_logicalScaleY = dY;
+}; // end of wxDC::SetLogicalScale
+
+#if WXWIN_COMPATIBILITY
+void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y,
+                         float *descent, float *externalLeading,
+                         wxFont *theFont, bool use16bit) const
+{
+    wxCoord x1, y1, descent1, externalLeading1;
+    GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
+    *x = x1; *y = y1;
+    if (descent)
+        *descent = descent1;
+    if (externalLeading)
+        *externalLeading = externalLeading1;
+}
+#endif