]> git.saurik.com Git - wxWidgets.git/blobdiff - src/msw/font.cpp
wxUniversal fix.
[wxWidgets.git] / src / msw / font.cpp
index 2df27bb969eec459694eef08c90d8b26df570a14..9b40d9cb927fe601f325e2c5c6a16f1ce9c9e4a3 100644 (file)
@@ -5,7 +5,7 @@
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$
-// Copyright:   (c) wxWindows team
+// Copyright:   (c) wxWidgets team
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
@@ -17,7 +17,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "font.h"
 #endif
 
@@ -35,6 +35,7 @@
     #include "wx/app.h"
     #include "wx/font.h"
     #include "wx/log.h"
+    #include "wx/encinfo.h"
 #endif // WX_PRECOMP
 
 #include "wx/msw/private.h"
 
 #include "wx/tokenzr.h"
 
-IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
+#if wxUSE_EXTENDED_RTTI
+
+wxBEGIN_ENUM( wxFontFamily )
+    wxENUM_MEMBER( wxDEFAULT )
+    wxENUM_MEMBER( wxDECORATIVE )
+    wxENUM_MEMBER( wxROMAN )
+    wxENUM_MEMBER( wxSCRIPT )
+    wxENUM_MEMBER( wxSWISS )
+    wxENUM_MEMBER( wxMODERN )
+    wxENUM_MEMBER( wxTELETYPE )
+wxEND_ENUM( wxFontFamily )
+
+wxBEGIN_ENUM( wxFontStyle )
+    wxENUM_MEMBER( wxNORMAL )
+    wxENUM_MEMBER( wxITALIC )
+    wxENUM_MEMBER( wxSLANT )
+wxEND_ENUM( wxFontStyle )
+
+wxBEGIN_ENUM( wxFontWeight )
+    wxENUM_MEMBER( wxNORMAL )
+    wxENUM_MEMBER( wxLIGHT )
+    wxENUM_MEMBER( wxBOLD )
+wxEND_ENUM( wxFontWeight )
+
+IMPLEMENT_DYNAMIC_CLASS_WITH_COPY_XTI(wxFont, wxGDIObject,"wx/font.h")
+
+wxBEGIN_PROPERTIES_TABLE(wxFont)
+    wxPROPERTY( Size,int, SetPointSize, GetPointSize, 12 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+    wxPROPERTY( Family, int  , SetFamily, GetFamily, (int)wxDEFAULT , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // wxFontFamily
+    wxPROPERTY( Style, int , SetStyle, GetStyle, (int)wxNORMAL , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // wxFontStyle
+    wxPROPERTY( Weight, int , SetWeight, GetWeight, (int)wxNORMAL , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // wxFontWeight
+    wxPROPERTY( Underlined, bool , SetUnderlined, GetUnderlined, false , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+    wxPROPERTY( Face, wxString , SetFaceName, GetFaceName, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+    wxPROPERTY( Encoding, wxFontEncoding , SetEncoding, GetEncoding, wxFONTENCODING_DEFAULT , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+wxEND_PROPERTIES_TABLE()
+
+wxCONSTRUCTOR_6( wxFont , int , Size , int , Family , int , Style , int , Weight , bool , Underlined , wxString , Face )
+
+wxBEGIN_HANDLERS_TABLE(wxFont)
+wxEND_HANDLERS_TABLE()
+
+#else
+    IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
+#endif
+
 
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 
+// the mask used to extract the pitch from LOGFONT::lfPitchAndFamily field
+static const int PITCH_MASK = FIXED_PITCH | VARIABLE_PITCH;
+
 // ----------------------------------------------------------------------------
 // wxFontRefData - the internal description of the font
 // ----------------------------------------------------------------------------
@@ -60,11 +108,14 @@ public:
     // constructors
     wxFontRefData()
     {
-        Init(-1, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL,
-             FALSE, _T(""), wxFONTENCODING_DEFAULT);
+        Init(-1, wxSize(0, 0), FALSE, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL,
+             wxFONTWEIGHT_NORMAL, FALSE, wxEmptyString,
+             wxFONTENCODING_DEFAULT);
     }
 
     wxFontRefData(int size,
+                  const wxSize& pixelSize,
+                  bool sizeUsingPixels,
                   int family,
                   int style,
                   int weight,
@@ -72,7 +123,8 @@ public:
                   const wxString& faceName,
                   wxFontEncoding encoding)
     {
-        Init(size, family, style, weight, underlined, faceName, encoding);
+        Init(size, pixelSize, sizeUsingPixels, family, style, weight,
+             underlined, faceName, encoding);
     }
 
     wxFontRefData(const wxNativeFontInfo& info, WXHFONT hFont = 0)
@@ -88,7 +140,8 @@ public:
         }
         else
         {
-            Init(data.m_pointSize, data.m_family, data.m_style, data.m_weight,
+            Init(data.m_pointSize, data.m_pixelSize, data.m_sizeUsingPixels,
+                 data.m_family, data.m_style, data.m_weight,
                  data.m_underlined, data.m_faceName, data.m_encoding);
         }
     }
@@ -107,6 +160,17 @@ public:
                                   : m_pointSize;
     }
 
+    wxSize GetPixelSize() const
+    {
+        return m_nativeFontInfoOk ? m_nativeFontInfo.GetPixelSize()
+                                  : m_pixelSize;
+    }
+
+    bool IsUsingSizeInPixels() const
+    {
+        return m_nativeFontInfoOk ? true : m_sizeUsingPixels;
+    }
+
     int GetFamily() const
     {
         return m_family;
@@ -153,9 +217,27 @@ public:
     void SetPointSize(int pointSize)
     {
         if ( m_nativeFontInfoOk )
+        {
             m_nativeFontInfo.SetPointSize(pointSize);
+        }
         else
+        {
             m_pointSize = pointSize;
+            m_sizeUsingPixels = FALSE;
+        }
+    }
+
+    void SetPixelSize(const wxSize& pixelSize)
+    {
+        if ( m_nativeFontInfoOk )
+        {
+            m_nativeFontInfo.SetPixelSize(pixelSize);
+        }
+        else
+        {
+            m_pixelSize = pixelSize;
+            m_sizeUsingPixels = TRUE;
+        }
     }
 
     void SetFamily(int family)
@@ -212,6 +294,8 @@ public:
 protected:
     // common part of all ctors
     void Init(int size,
+              const wxSize& pixelSize,
+              bool sizeUsingPixels,
               int family,
               int style,
               int weight,
@@ -223,6 +307,8 @@ protected:
 
     // font characterstics
     int           m_pointSize;
+    wxSize        m_pixelSize;
+    bool          m_sizeUsingPixels;
     int           m_family;
     int           m_style;
     int           m_weight;
@@ -247,6 +333,8 @@ protected:
 // ----------------------------------------------------------------------------
 
 void wxFontRefData::Init(int pointSize,
+                         const wxSize& pixelSize,
+                         bool sizeUsingPixels,
                          int family,
                          int style,
                          int weight,
@@ -256,6 +344,8 @@ void wxFontRefData::Init(int pointSize,
 {
     m_style = style;
     m_pointSize = pointSize == -1 ? wxNORMAL_FONT->GetPointSize() : pointSize;
+    m_pixelSize = pixelSize;
+    m_sizeUsingPixels = sizeUsingPixels;
     m_family = family;
     m_style = style;
     m_weight = weight;
@@ -265,55 +355,22 @@ void wxFontRefData::Init(int pointSize,
 
     m_hFont = 0;
 
-    m_nativeFontInfoOk = FALSE;
+    m_nativeFontInfoOk = false;
 }
 
 void wxFontRefData::Init(const wxNativeFontInfo& info, WXHFONT hFont)
 {
-    // we don't really need the family, what for?
-#if 0
-    // extract family from pitch-and-family
-    int lfFamily = info.lf.lfPitchAndFamily;
-    if ( lfFamily & FIXED_PITCH )
-        lfFamily -= FIXED_PITCH;
-    if ( lfFamily & VARIABLE_PITCH )
-        lfFamily -= VARIABLE_PITCH;
-
-    switch ( lfFamily )
-    {
-        case FF_ROMAN:
-            m_family = wxROMAN;
-            break;
-
-        case FF_SWISS:
-            m_family = wxSWISS;
-            break;
-
-        case FF_SCRIPT:
-            m_family = wxSCRIPT;
-            break;
-
-        case FF_MODERN:
-            m_family = wxMODERN;
-            break;
-
-        case FF_DECORATIVE:
-            m_family = wxDECORATIVE;
-            break;
-
-        default:
-            m_family = wxSWISS;
-    }
-#endif // 0
-
     // hFont may be zero, or it be passed in case we really want to
     // use the exact font created in the underlying system
     // (for example where we can't guarantee conversion from HFONT
     // to LOGFONT back to HFONT)
     m_hFont = hFont;
 
-    m_nativeFontInfoOk = TRUE;
+    m_nativeFontInfoOk = true;
     m_nativeFontInfo = info;
+    // This is the best we can do since we don't have the
+    // correct information at this point.
+    m_family = wxSWISS;
 }
 
 wxFontRefData::~wxFontRefData()
@@ -326,7 +383,7 @@ bool wxFontRefData::Alloc(wxFont *font)
     if ( !m_nativeFontInfoOk )
     {
         wxFillLogFont(&m_nativeFontInfo.lf, font);
-        m_nativeFontInfoOk = TRUE;
+        m_nativeFontInfoOk = true;
     }
 
     HFONT hfont = ::CreateFontIndirect(&m_nativeFontInfo.lf);
@@ -334,12 +391,12 @@ bool wxFontRefData::Alloc(wxFont *font)
     {
         wxLogLastError(wxT("CreateFont"));
 
-        return FALSE;
+        return false;
     }
 
     m_hFont = (WXHFONT)hfont;
 
-    return TRUE;
+    return true;
 }
 
 void wxFontRefData::Free()
@@ -373,6 +430,14 @@ int wxNativeFontInfo::GetPointSize() const
     return (int) (((72.0*(double)abs(lf.lfHeight)) / (double) ppInch) + 0.5);
 }
 
+wxSize wxNativeFontInfo::GetPixelSize() const
+{
+    wxSize ret;
+    ret.SetHeight(lf.lfHeight);
+    ret.SetWidth(lf.lfWidth);
+    return ret;
+}
+
 wxFontStyle wxNativeFontInfo::GetStyle() const
 {
     return lf.lfItalic ? wxFONTSTYLE_ITALIC : wxFONTSTYLE_NORMAL;
@@ -399,6 +464,41 @@ wxString wxNativeFontInfo::GetFaceName() const
     return lf.lfFaceName;
 }
 
+wxFontFamily wxNativeFontInfo::GetFamily() const
+{
+    wxFontFamily family;
+
+    // extract family from pitch-and-family
+    switch ( lf.lfPitchAndFamily & ~PITCH_MASK )
+    {
+        case FF_ROMAN:
+            family = wxFONTFAMILY_ROMAN;
+            break;
+
+        default:
+            wxFAIL_MSG( _T("unknown LOGFONT::lfFamily value") );
+            // fall through
+
+        case FF_SWISS:
+            family = wxFONTFAMILY_SWISS;
+            break;
+
+        case FF_SCRIPT:
+            family = wxFONTFAMILY_SCRIPT;
+            break;
+
+        case FF_MODERN:
+            family = wxFONTFAMILY_MODERN;
+            break;
+
+        case FF_DECORATIVE:
+            family = wxFONTFAMILY_DECORATIVE;
+            break;
+    }
+
+    return family;
+}
+
 wxFontEncoding wxNativeFontInfo::GetEncoding() const
 {
     return wxGetFontEncFromCharSet(lf.lfCharSet);
@@ -406,18 +506,20 @@ wxFontEncoding wxNativeFontInfo::GetEncoding() const
 
 void wxNativeFontInfo::SetPointSize(int pointsize)
 {
-#if wxFONT_SIZE_COMPATIBILITY
-    // Incorrect, but compatible with old wxWindows behaviour
-    lf.lfHeight = (pointSize*ppInch)/72;
-#else // wxFONT_SIZE_COMPATIBILITY
     // FIXME: using the screen here results in incorrect font size calculation
     //        for printing!
     const int ppInch = ::GetDeviceCaps(ScreenHDC(), LOGPIXELSY);
 
     lf.lfHeight = -(int)((pointsize*((double)ppInch)/72.0) + 0.5);
-#endif // wxFONT_SIZE_COMPATIBILITY/!wxFONT_SIZE_COMPATIBILITY
 }
 
+void wxNativeFontInfo::SetPixelSize(const wxSize& pixelSize)
+{
+    lf.lfHeight = pixelSize.GetHeight();
+    lf.lfWidth = pixelSize.GetWidth();
+}
+
+
 void wxNativeFontInfo::SetStyle(wxFontStyle style)
 {
     switch ( style )
@@ -427,6 +529,7 @@ void wxNativeFontInfo::SetStyle(wxFontStyle style)
             // fall through
 
         case wxFONTSTYLE_NORMAL:
+            lf.lfItalic = FALSE;
             break;
 
         case wxFONTSTYLE_ITALIC:
@@ -465,12 +568,12 @@ void wxNativeFontInfo::SetUnderlined(bool underlined)
 
 void wxNativeFontInfo::SetFaceName(wxString facename)
 {
-    wxStrncpy(lf.lfFaceName, facename, sizeof(lf.lfFaceName));
+    wxStrncpy(lf.lfFaceName, facename, WXSIZEOF(lf.lfFaceName));
 }
 
 void wxNativeFontInfo::SetFamily(wxFontFamily family)
 {
-    int ff_family;
+    BYTE ff_family;
     wxString facename;
 
     switch ( family )
@@ -482,7 +585,7 @@ void wxNativeFontInfo::SetFamily(wxFontFamily family)
 
         case wxDECORATIVE:
             ff_family = FF_DECORATIVE;
-            facename = _T("Wingdings");
+            facename = _T("Old English Text MT");
             break;
 
         case wxROMAN:
@@ -507,7 +610,7 @@ void wxNativeFontInfo::SetFamily(wxFontFamily family)
             facename = _T("MS Sans Serif");
     }
 
-    lf.lfPitchAndFamily = DEFAULT_PITCH | ff_family;
+    lf.lfPitchAndFamily = (BYTE)(DEFAULT_PITCH) | ff_family;
 
     if ( !wxStrlen(lf.lfFaceName) )
     {
@@ -521,22 +624,25 @@ void wxNativeFontInfo::SetEncoding(wxFontEncoding encoding)
     if ( !wxGetNativeFontEncoding(encoding, &info) )
     {
 #if wxUSE_FONTMAP
-        if ( !wxTheFontMapper->GetAltForEncoding(encoding, &info) )
-#endif // wxUSE_FONTMAP
+        if ( wxFontMapper::Get()->GetAltForEncoding(encoding, &info) )
         {
-            // unsupported encoding, replace with the default
-            info.charset = ANSI_CHARSET;
+            if ( !info.facename.empty() )
+            {
+                // if we have this encoding only in some particular facename, use
+                // the facename - it is better to show the correct characters in a
+                // wrong facename than unreadable text in a correct one
+                SetFaceName(info.facename);
+            }
         }
-        else if ( !info.facename.empty() )
+        else
+#endif // wxUSE_FONTMAP
         {
-            // if we have this encoding only in some particular facename, use
-            // the facename - it is better to show the correct characters in a
-            // wrong facename than unreadable text in a correct one
-            SetFaceName(info.facename);
+            // unsupported encoding, replace with the default
+            info.charset = DEFAULT_CHARSET;
         }
     }
 
-    lf.lfCharSet = info.charset;
+    lf.lfCharSet = (BYTE)info.charset;
 }
 
 bool wxNativeFontInfo::FromString(const wxString& s)
@@ -548,86 +654,86 @@ bool wxNativeFontInfo::FromString(const wxString& s)
     // first the version
     wxString token = tokenizer.GetNextToken();
     if ( token != _T('0') )
-        return FALSE;
+        return false;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfHeight = l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfWidth = l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfEscapement = l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfOrientation = l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfWeight = l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfItalic = (BYTE)l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfUnderline = (BYTE)l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfStrikeOut = (BYTE)l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfCharSet = (BYTE)l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfOutPrecision = (BYTE)l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfClipPrecision = (BYTE)l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfQuality = (BYTE)l;
 
     token = tokenizer.GetNextToken();
     if ( !token.ToLong(&l) )
-        return FALSE;
+        return false;
     lf.lfPitchAndFamily = (BYTE)l;
 
     token = tokenizer.GetNextToken();
     if(!token)
-        return FALSE;
+        return false;
     wxStrcpy(lf.lfFaceName, token.c_str());
 
-    return TRUE;
+    return true;
 }
 
 wxString wxNativeFontInfo::ToString() const
 {
     wxString s;
 
-    s.Printf(_T("%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%d;%s"),
+    s.Printf(_T("%d;%ld;%ld;%ld;%ld;%ld;%d;%d;%d;%d;%d;%d;%d;%d;%s"),
              0, // version, in case we want to change the format later
              lf.lfHeight,
              lf.lfWidth,
@@ -663,7 +769,7 @@ bool wxFont::Create(const wxNativeFontInfo& info, WXHFONT hFont)
 
     RealizeResource();
 
-    return TRUE;
+    return true;
 }
 
 wxFont::wxFont(const wxString& fontdesc)
@@ -676,13 +782,15 @@ wxFont::wxFont(const wxString& fontdesc)
 /* Constructor for a font. Note that the real construction is done
  * in wxDC::SetFont, when information is available about scaling etc.
  */
-bool wxFont::Create(int pointSize,
-                    int family,
-                    int style,
-                    int weight,
-                    bool underlined,
-                    const wxString& faceName,
-                    wxFontEncoding encoding)
+bool wxFont::DoCreate(int pointSize,
+                      const wxSize& pixelSize,
+                      bool sizeUsingPixels,
+                      int family,
+                      int style,
+                      int weight,
+                      bool underlined,
+                      const wxString& faceName,
+                      wxFontEncoding encoding)
 {
     UnRef();
 
@@ -693,12 +801,13 @@ bool wxFont::Create(int pointSize,
         pointSize = wxNORMAL_FONT->GetPointSize();
     }
 
-    m_refData = new wxFontRefData(pointSize, family, style, weight,
+    m_refData = new wxFontRefData(pointSize, pixelSize, sizeUsingPixels,
+                                  family, style, weight,
                                   underlined, faceName, encoding);
 
     RealizeResource();
 
-    return TRUE;
+    return true;
 }
 
 wxFont::~wxFont()
@@ -713,9 +822,9 @@ bool wxFont::RealizeResource()
 {
     if ( GetResourceHandle() )
     {
-        // VZ: the old code returned FALSE in this case, but it doesn't seem
+        // VZ: the old code returned false in this case, but it doesn't seem
         //     to make sense because the font _was_ created
-        return TRUE;
+        return true;
     }
 
     return M_FONTDATA->Alloc(this);
@@ -727,15 +836,15 @@ bool wxFont::FreeResource(bool WXUNUSED(force))
     {
         M_FONTDATA->Free();
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-WXHANDLE wxFont::GetResourceHandle()
+WXHANDLE wxFont::GetResourceHandle() const
 {
-    return GetHFONT();
+    return (WXHANDLE)GetHFONT();
 }
 
 WXHFONT wxFont::GetHFONT() const
@@ -776,6 +885,15 @@ void wxFont::SetPointSize(int pointSize)
     RealizeResource();
 }
 
+void wxFont::SetPixelSize(const wxSize& pixelSize)
+{
+    Unshare();
+
+    M_FONTDATA->SetPixelSize(pixelSize);
+
+    RealizeResource();
+}
+
 void wxFont::SetFamily(int family)
 {
     Unshare();
@@ -830,7 +948,7 @@ void wxFont::SetEncoding(wxFontEncoding encoding)
     RealizeResource();
 }
 
-void wxFont::SetNativeFontInfo(const wxNativeFontInfo& info)
+void wxFont::DoSetNativeFontInfo(const wxNativeFontInfo& info)
 {
     Unshare();
 
@@ -852,6 +970,18 @@ int wxFont::GetPointSize() const
     return M_FONTDATA->GetPointSize();
 }
 
+wxSize wxFont::GetPixelSize() const
+{
+    return M_FONTDATA->GetPixelSize();
+}
+
+bool wxFont::IsUsingSizeInPixels() const
+{
+    wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
+
+    return M_FONTDATA->IsUsingSizeInPixels();
+}
+
 int wxFont::GetFamily() const
 {
     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
@@ -875,14 +1005,14 @@ int wxFont::GetWeight() const
 
 bool wxFont::GetUnderlined() const
 {
-    wxCHECK_MSG( Ok(), FALSE, wxT("invalid font") );
+    wxCHECK_MSG( Ok(), false, wxT("invalid font") );
 
     return M_FONTDATA->GetUnderlined();
 }
 
 wxString wxFont::GetFaceName() const
 {
-    wxCHECK_MSG( Ok(), wxT(""), wxT("invalid font") );
+    wxCHECK_MSG( Ok(), wxEmptyString, wxT("invalid font") );
 
     return M_FONTDATA->GetFaceName();
 }
@@ -894,11 +1024,24 @@ wxFontEncoding wxFont::GetEncoding() const
     return M_FONTDATA->GetEncoding();
 }
 
-wxNativeFontInfo *wxFont::GetNativeFontInfo() const
+const wxNativeFontInfo *wxFont::GetNativeFontInfo() const
+{
+    return M_FONTDATA->HasNativeFontInfo() ? &(M_FONTDATA->GetNativeFontInfo())
+                                           : NULL;
+}
+
+bool wxFont::IsFixedWidth() const
 {
     if ( M_FONTDATA->HasNativeFontInfo() )
-        return new wxNativeFontInfo(M_FONTDATA->GetNativeFontInfo());
+    {
+        // the two low-order bits specify the pitch of the font, the rest is
+        // family
+        BYTE pitch =
+            (BYTE)(M_FONTDATA->GetNativeFontInfo().lf.lfPitchAndFamily & PITCH_MASK);
+
+        return pitch == FIXED_PITCH;
+    }
 
-    return 0;
+    return wxFontBase::IsFixedWidth();
 }