add GetMDIParent() and use it to reduce the number of casts in the MDI code (patch...

[wxWidgets.git] / src / msw / graphics.cpp

diff --git a/src/msw/graphics.cpp b/src/msw/graphics.cpp
index a9a929568241513f1caf2b17d035693e48b8c16e..2d0e3f4edabac00a011bcfae1f6c35b315092a90 100644 (file)
--- a/src/msw/graphics.cpp
+++ b/src/msw/graphics.cpp
@@ -35,7 +35,7 @@
     #include "wx/module.h"
 #endif
 
     #include "wx/module.h"
 #endif
 

-#include "wx/graphics.h"
+#include "wx/private/graphics.h"

 #include "wx/msw/wrapgdip.h"
 
 #include "wx/stack.h"
 #include "wx/msw/wrapgdip.h"
 
 #include "wx/stack.h"


@@ -80,7 +80,7 @@ static inline double RadToDeg(double deg) { return (deg * 180.0) / M_PI; }
 #include <commdlg.h>
 #endif
 
 #include <commdlg.h>
 #endif
 

-class WXDLLIMPEXP_CORE wxGDIPlusPathData : public wxGraphicsPathData
+class wxGDIPlusPathData : public wxGraphicsPathData

 {
 public :
     wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path = NULL);
 {
 public :
     wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path = NULL);


@@ -148,7 +148,7 @@ private :
     GraphicsPath* m_path;
 };
 
     GraphicsPath* m_path;
 };
 

-class WXDLLIMPEXP_CORE wxGDIPlusMatrixData : public wxGraphicsMatrixData
+class wxGDIPlusMatrixData : public wxGraphicsMatrixData

 {
 public :
     wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix = NULL) ;
 {
 public :
     wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix = NULL) ;


@@ -205,7 +205,7 @@ private:
     Matrix* m_matrix ;
 } ;
 
     Matrix* m_matrix ;
 } ;
 

-class WXDLLIMPEXP_CORE wxGDIPlusPenData : public wxGraphicsObjectRefData
+class wxGDIPlusPenData : public wxGraphicsObjectRefData

 {
 public:
     wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 {
 public:
     wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen );


@@ -224,7 +224,7 @@ protected :
     wxDouble m_width;
 };
 
     wxDouble m_width;
 };
 

-class WXDLLIMPEXP_CORE wxGDIPlusBrushData : public wxGraphicsObjectRefData
+class wxGDIPlusBrushData : public wxGraphicsObjectRefData

 {
 public:
     wxGDIPlusBrushData( wxGraphicsRenderer* renderer );
 {
 public:
     wxGDIPlusBrushData( wxGraphicsRenderer* renderer );


@@ -246,7 +246,7 @@ private :
     GraphicsPath* m_brushPath;
 };
 
     GraphicsPath* m_brushPath;
 };
 

-class WXDLLIMPEXP_CORE wxGDIPlusFontData : public wxGraphicsObjectRefData
+class wxGDIPlusFontData : public wxGraphicsObjectRefData

 {
 public:
     wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 {
 public:
     wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );


@@ -259,7 +259,7 @@ private :
     Font* m_font;
 };
 
     Font* m_font;
 };
 

-class WXDLLIMPEXP_CORE wxGDIPlusContext : public wxGraphicsContext
+class wxGDIPlusContext : public wxGraphicsContext

 {
 public:
     wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc );
 {
 public:
     wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc );


@@ -281,6 +281,12 @@ public:
     virtual void StrokePath( const wxGraphicsPath& p );
     virtual void FillPath( const wxGraphicsPath& p , int fillStyle = wxODDEVEN_RULE );
 
     virtual void StrokePath( const wxGraphicsPath& p );
     virtual void FillPath( const wxGraphicsPath& p , int fillStyle = wxODDEVEN_RULE );
 

+       // stroke lines connecting each of the points
+    virtual void StrokeLines( size_t n, const wxPoint2DDouble *points);
+
+    // draws a polygon
+    virtual void DrawLines( size_t n, const wxPoint2DDouble *points, int fillStyle = wxODDEVEN_RULE );
+

     virtual void Translate( wxDouble dx , wxDouble dy );
     virtual void Scale( wxDouble xScale , wxDouble yScale );
     virtual void Rotate( wxDouble angle );
     virtual void Translate( wxDouble dx , wxDouble dy );
     virtual void Scale( wxDouble xScale , wxDouble yScale );
     virtual void Rotate( wxDouble angle );


@@ -303,6 +309,7 @@ public:
     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
         wxDouble *descent, wxDouble *externalLeading ) const;
     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
         wxDouble *descent, wxDouble *externalLeading ) const;
     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;

+    virtual bool ShouldOffset() const;

 
 private:
     void    Init();
 
 private:
     void    Init();


@@ -316,6 +323,26 @@ private:
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusContext)
 };
 
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusContext)
 };
 

+class WXDLLIMPEXP_CORE wxGDIPlusMeasuringContext : public wxGDIPlusContext
+{
+public:
+    wxGDIPlusMeasuringContext( wxGraphicsRenderer* renderer ) : wxGDIPlusContext( renderer , m_hdc = GetDC(NULL) )
+    {
+    }
+    wxGDIPlusMeasuringContext()
+    {
+    }
+
+    virtual ~wxGDIPlusMeasuringContext()
+    {
+        ReleaseDC( NULL, m_hdc );
+    }
+
+private:
+    HDC m_hdc ;
+    DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusMeasuringContext)
+} ;
+

 //-----------------------------------------------------------------------------
 // wxGDIPlusPen implementation
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // wxGDIPlusPen implementation
 //-----------------------------------------------------------------------------


@@ -667,7 +694,7 @@ void wxGDIPlusPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
 void wxGDIPlusPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 {
     double sweepAngle = endAngle - startAngle ;
 void wxGDIPlusPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 {
     double sweepAngle = endAngle - startAngle ;

-    if( abs(sweepAngle) >= 2*M_PI)
+    if( fabs(sweepAngle) >= 2*M_PI)

     {
         sweepAngle = 2 * M_PI;
     }
     {
         sweepAngle = 2 * M_PI;
     }


@@ -845,6 +872,27 @@ void * wxGDIPlusMatrixData::GetNativeMatrix() const
 //-----------------------------------------------------------------------------
 
 IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusContext,wxGraphicsContext)
 //-----------------------------------------------------------------------------
 
 IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusContext,wxGraphicsContext)

+IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusMeasuringContext,wxGDIPlusContext)
+
+class wxGDIPlusOffsetHelper
+{
+public :
+    wxGDIPlusOffsetHelper( Graphics* gr , bool offset )
+    {
+        m_gr = gr;
+        m_offset = offset;
+        if ( m_offset )
+            m_gr->TranslateTransform( 0.5, 0.5 );
+    }
+    ~wxGDIPlusOffsetHelper( )
+    {
+        if ( m_offset )
+            m_gr->TranslateTransform( -0.5, -0.5 );
+    }
+public :
+    Graphics* m_gr;
+    bool m_offset;
+} ;

 
 wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc  )
     : wxGraphicsContext(renderer)
 
 wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc  )
     : wxGraphicsContext(renderer)


@@ -884,6 +932,8 @@ void wxGDIPlusContext::Init()
 
 void wxGDIPlusContext::SetDefaults()
 {
 
 void wxGDIPlusContext::SetDefaults()
 {

+    m_context->SetTextRenderingHint(TextRenderingHintSystemDefault);
+    m_context->SetPixelOffsetMode(PixelOffsetModeHalf);

     m_context->SetSmoothingMode(SmoothingModeHighQuality);
     m_state1 = m_context->Save();
     m_state2 = m_context->Save();
     m_context->SetSmoothingMode(SmoothingModeHighQuality);
     m_state1 = m_context->Save();
     m_state2 = m_context->Save();


@@ -916,10 +966,45 @@ void wxGDIPlusContext::ResetClip()
     m_context->ResetClip();
 }
 
     m_context->ResetClip();
 }
 

+void wxGDIPlusContext::StrokeLines( size_t n, const wxPoint2DDouble *points)
+{
+       if ( !m_pen.IsNull() )
+       {
+        wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
+               Point *cpoints = new Point[n];
+               for (size_t i = 0; i < n; i++)
+               {
+                       cpoints[i].X = (int)(points[i].m_x );
+                       cpoints[i].Y = (int)(points[i].m_y );
+
+               } // for (size_t i = 0; i < n; i++)
+               m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ;
+               delete[] cpoints;
+       }
+}
+
+void wxGDIPlusContext::DrawLines( size_t n, const wxPoint2DDouble *points, int WXUNUSED(fillStyle) )
+{
+    wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
+       Point *cpoints = new Point[n];
+       for (size_t i = 0; i < n; i++)
+       {
+               cpoints[i].X = (int)(points[i].m_x );
+               cpoints[i].Y = (int)(points[i].m_y );
+
+       } // for (int i = 0; i < n; i++)
+       if ( !m_brush.IsNull() )
+               m_context->FillPolygon( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() , cpoints , n ) ;
+       if ( !m_pen.IsNull() )
+               m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ;
+       delete[] cpoints;
+}
+

 void wxGDIPlusContext::StrokePath( const wxGraphicsPath& path )
 {
     if ( !m_pen.IsNull() )
     {
 void wxGDIPlusContext::StrokePath( const wxGraphicsPath& path )
 {
     if ( !m_pen.IsNull() )
     {

+        wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );

         m_context->DrawPath( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , (GraphicsPath*) path.GetNativePath() );
     }
 }
         m_context->DrawPath( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , (GraphicsPath*) path.GetNativePath() );
     }
 }


@@ -928,6 +1013,7 @@ void wxGDIPlusContext::FillPath( const wxGraphicsPath& path , int fillStyle )
 {
     if ( !m_brush.IsNull() )
     {
 {
     if ( !m_brush.IsNull() )
     {

+        wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );

         ((GraphicsPath*) path.GetNativePath())->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
         m_context->FillPath( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() ,
             (GraphicsPath*) path.GetNativePath());
         ((GraphicsPath*) path.GetNativePath())->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
         m_context->FillPath( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() ,
             (GraphicsPath*) path.GetNativePath());


@@ -1029,7 +1115,7 @@ void wxGDIPlusContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y,
     else
     {
         image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());
     else
     {
         image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());

-        if ( GetPixelFormatSize(image->GetPixelFormat()) == 32 )
+        if ( bmp.HasAlpha() && GetPixelFormatSize(image->GetPixelFormat()) == 32 )

         {
             size_t width = image->GetWidth();
             size_t height = image->GetHeight();
         {
             size_t width = image->GetWidth();
             size_t height = image->GetHeight();


@@ -1042,7 +1128,7 @@ void wxGDIPlusContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y,
                 helper->GetPixelFormat(),&data);
 
             image = new Bitmap(data.Width, data.Height, data.Stride,
                 helper->GetPixelFormat(),&data);
 
             image = new Bitmap(data.Width, data.Height, data.Stride,

-                PixelFormat32bppARGB , (BYTE*) data.Scan0);
+                PixelFormat32bppPARGB , (BYTE*) data.Scan0);

 
             helper->UnlockBits(&data);
         }
 
             helper->UnlockBits(&data);
         }


@@ -1055,18 +1141,20 @@ void wxGDIPlusContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y,
 
 void wxGDIPlusContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {
 
 void wxGDIPlusContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {

+    // the built-in conversion fails when there is alpha in the HICON (eg XP style icons), we can only
+    // find out by looking at the bitmap data whether there really was alpha in it

     HICON hIcon = (HICON)icon.GetHICON();
     ICONINFO iconInfo ;
     // IconInfo creates the bitmaps for color and mask, we must dispose of them after use
     if (!GetIconInfo(hIcon,&iconInfo))
         return;
 
     HICON hIcon = (HICON)icon.GetHICON();
     ICONINFO iconInfo ;
     // IconInfo creates the bitmaps for color and mask, we must dispose of them after use
     if (!GetIconInfo(hIcon,&iconInfo))
         return;
 

-    BITMAP iconBmpData ;
-    GetObject(iconInfo.hbmColor,sizeof(BITMAP),&iconBmpData);

     Bitmap interim(iconInfo.hbmColor,NULL);
 
     Bitmap* image = NULL ;
 
     Bitmap interim(iconInfo.hbmColor,NULL);
 
     Bitmap* image = NULL ;
 

+    // if it's not 32 bit, it doesn't have an alpha channel, note that since the conversion doesn't
+    // work correctly, asking IsAlphaPixelFormat at this point fails as well

     if( GetPixelFormatSize(interim.GetPixelFormat())!= 32 )
     {
         image = Bitmap::FromHICON(hIcon);
     if( GetPixelFormatSize(interim.GetPixelFormat())!= 32 )
     {
         image = Bitmap::FromHICON(hIcon);


@@ -1080,8 +1168,28 @@ void wxGDIPlusContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxD
 
         interim.LockBits(&bounds, ImageLockModeRead,
             interim.GetPixelFormat(),&data);
 
         interim.LockBits(&bounds, ImageLockModeRead,
             interim.GetPixelFormat(),&data);

+        
+        bool hasAlpha = false;
+        for ( size_t y = 0 ; y < height && !hasAlpha ; ++y)
+        {
+            for( size_t x = 0 ; x < width && !hasAlpha; ++x)
+            {
+                ARGB *dest = (ARGB*)((BYTE*)data.Scan0 + data.Stride*y + x*4);
+                if ( ( *dest & Color::AlphaMask ) != 0 )
+                    hasAlpha = true;
+            }
+        }
+
+        if ( hasAlpha )
+        {

         image = new Bitmap(data.Width, data.Height, data.Stride,
             PixelFormat32bppARGB , (BYTE*) data.Scan0);
         image = new Bitmap(data.Width, data.Height, data.Stride,
             PixelFormat32bppARGB , (BYTE*) data.Scan0);

+        }
+        else
+        {
+            image = Bitmap::FromHICON(hIcon);
+        }
+

         interim.UnlockBits(&data);
     }
 
         interim.UnlockBits(&data);
     }
 


@@ -1099,8 +1207,7 @@ void wxGDIPlusContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
 
     wxWCharBuffer s = str.wc_str( *wxConvUI );
     m_context->DrawString( s , -1 , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont() ,
 
     wxWCharBuffer s = str.wc_str( *wxConvUI );
     m_context->DrawString( s , -1 , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont() ,

-            PointF( x , y ) , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusBrush() );
-    // TODO m_backgroundMode == wxSOLID
+            PointF( x , y ) , StringFormat::GenericTypographic() , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusBrush() );

 }
 
 void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 }
 
 void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,


@@ -1122,11 +1229,11 @@ void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDo
         f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
 
     if ( height )
         f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
 
     if ( height )

-        *height = rHeight * factorY + 0.5 ;
+        *height = rHeight * factorY;

     if ( descent )
     if ( descent )

-        *descent = rDescent * factorY + 0.5 ;
+        *descent = rDescent * factorY;

     if ( externalLeading )
     if ( externalLeading )

-        *externalLeading = (rHeight - rAscent - rDescent) * factorY + 0.5 ;
+        *externalLeading = (rHeight - rAscent - rDescent) * factorY;

     // measuring empty strings is not guaranteed, so do it by hand
     if ( str.IsEmpty())
     {
     // measuring empty strings is not guaranteed, so do it by hand
     if ( str.IsEmpty())
     {


@@ -1135,18 +1242,14 @@ void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDo
     }
     else
     {
     }
     else
     {

-        // MeasureString does return a rectangle that is way too large, so it is
-        // not usable here

         RectF layoutRect(0,0, 100000.0f, 100000.0f);
         RectF layoutRect(0,0, 100000.0f, 100000.0f);

-        StringFormat strFormat;
-        CharacterRange strRange(0,wcslen(s));
-        strFormat.SetMeasurableCharacterRanges(1,&strRange);
-        Region region ;
-        m_context->MeasureCharacterRanges(s, -1 , f,layoutRect, &strFormat,1,&region) ;
-        RectF bbox ;
-        region.GetBounds(&bbox,m_context);
+        StringFormat strFormat( StringFormat::GenericTypographic() );
+        strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() ); 
+
+        RectF bounds ;
+        m_context->MeasureString((const wchar_t *) s , wcslen(s) , f, layoutRect, &strFormat, &bounds ) ;

         if ( width )
         if ( width )

-            *width = bbox.GetRight()-bbox.GetLeft()+0.5;
+            *width = bounds.Width;

     }
 }
 
     }
 }
 


@@ -1164,27 +1267,39 @@ void wxGDIPlusContext::GetPartialTextExtents(const wxString& text, wxArrayDouble
     wxASSERT_MSG(text.length() == len , wxT("GetPartialTextExtents not yet implemented for multichar situations"));
 
     RectF layoutRect(0,0, 100000.0f, 100000.0f);
     wxASSERT_MSG(text.length() == len , wxT("GetPartialTextExtents not yet implemented for multichar situations"));
 
     RectF layoutRect(0,0, 100000.0f, 100000.0f);

-    StringFormat strFormat;
+    StringFormat strFormat( StringFormat::GenericTypographic() );

 
     CharacterRange* ranges = new CharacterRange[len] ;
     Region* regions = new Region[len];
 
     CharacterRange* ranges = new CharacterRange[len] ;
     Region* regions = new Region[len];

-    size_t i;
-    for( i = 0 ; i < len ; ++i)
+    for( size_t i = 0 ; i < len ; ++i)

     {
         ranges[i].First = i ;
         ranges[i].Length = 1 ;
     }
     strFormat.SetMeasurableCharacterRanges(len,ranges);
     {
         ranges[i].First = i ;
         ranges[i].Length = 1 ;
     }
     strFormat.SetMeasurableCharacterRanges(len,ranges);

+    strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() ); 

     m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,1,regions) ;
 
     RectF bbox ;
     m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,1,regions) ;
 
     RectF bbox ;

-    for ( i = 0 ; i < len ; ++i)
+    for ( size_t i = 0 ; i < len ; ++i)

     {
         regions[i].GetBounds(&bbox,m_context);
         widths[i] = bbox.GetRight()-bbox.GetLeft();
     }
 }
 
     {
         regions[i].GetBounds(&bbox,m_context);
         widths[i] = bbox.GetRight()-bbox.GetLeft();
     }
 }
 

+bool wxGDIPlusContext::ShouldOffset() const
+{     
+    int penwidth = 0 ;
+    if ( !m_pen.IsNull() )
+    {
+        penwidth = (int)((wxGDIPlusPenData*)m_pen.GetRefData())->GetWidth();
+        if ( penwidth == 0 )
+            penwidth = 1;
+    }
+    return ( penwidth % 2 ) == 1;
+}
+

 void* wxGDIPlusContext::GetNativeContext()
 {
     return m_context;
 void* wxGDIPlusContext::GetNativeContext()
 {
     return m_context;


@@ -1213,7 +1328,7 @@ wxGraphicsMatrix wxGDIPlusContext::GetTransform() const
 // wxGDIPlusRenderer declaration
 //-----------------------------------------------------------------------------
 
 // wxGDIPlusRenderer declaration
 //-----------------------------------------------------------------------------
 

-class WXDLLIMPEXP_CORE wxGDIPlusRenderer : public wxGraphicsRenderer
+class wxGDIPlusRenderer : public wxGraphicsRenderer

 {
 public :
     wxGDIPlusRenderer()
 {
 public :
     wxGDIPlusRenderer()


@@ -1273,6 +1388,7 @@ protected :
     void EnsureIsLoaded();
     void Load();
     void Unload();
     void EnsureIsLoaded();
     void Load();
     void Unload();

+    friend class wxGDIPlusRendererModule;

 
 private :
     bool m_loaded;
 
 private :
     bool m_loaded;


@@ -1313,27 +1429,31 @@ void wxGDIPlusRenderer::Load()
 void wxGDIPlusRenderer::Unload()
 {
     if ( m_gditoken )
 void wxGDIPlusRenderer::Unload()
 {
     if ( m_gditoken )

+    {

         GdiplusShutdown(m_gditoken);
         GdiplusShutdown(m_gditoken);

+        m_gditoken = NULL;
+    }
+    m_loaded = false;

 }
 
 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxWindowDC& dc)
 {
     EnsureIsLoaded();
 }
 
 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxWindowDC& dc)
 {
     EnsureIsLoaded();

-    return new wxGDIPlusContext(this,(HDC) dc.GetHDC());
+    wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
+    return new wxGDIPlusContext(this,(HDC) msw->GetHDC());

 }
 
 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxMemoryDC& dc)
 {
     EnsureIsLoaded();
 }
 
 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxMemoryDC& dc)
 {
     EnsureIsLoaded();

-    return new wxGDIPlusContext(this,(HDC) dc.GetHDC());
+    wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
+    return new wxGDIPlusContext(this,(HDC) msw->GetHDC());

 }
 
 wxGraphicsContext * wxGDIPlusRenderer::CreateMeasuringContext()
 {
     EnsureIsLoaded();
 }
 
 wxGraphicsContext * wxGDIPlusRenderer::CreateMeasuringContext()
 {
     EnsureIsLoaded();

-    return NULL;
-    // TODO use GetDC(NULL) but then we have to release it from the context
-    //return new wxGDIPlusContext(this,(HDC) dc.GetHDC());
+    return new wxGDIPlusMeasuringContext(this);

 }
 
 wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeContext( void * context )
 }
 
 wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeContext( void * context )


@@ -1445,4 +1565,17 @@ wxGraphicsFont wxGDIPlusRenderer::CreateFont( const wxFont &font , const wxColou
         return wxNullGraphicsFont;
 }
 
         return wxNullGraphicsFont;
 }
 

+// Shutdown GDI+ at app exit, before possible dll unload
+class wxGDIPlusRendererModule : public wxModule
+{
+public:
+    virtual bool OnInit() { return true; }
+    virtual void OnExit() { gs_GDIPlusRenderer.Unload(); }
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxGDIPlusRendererModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusRendererModule, wxModule)
+

 #endif  // wxUSE_GRAPHICS_CONTEXT
 #endif  // wxUSE_GRAPHICS_CONTEXT