Added wxGCDC(wxEnhMetaFileDC) ctor too.

Make it possible to create wxGCDC associated with a metafile DC in wxMSW too.

Closes #13326.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@68304 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -450,6 +450,10 @@ GTK:
 
 - Generate events for two auxiliary mouse buttons in wxGTK (Marcin Wojdyr).
 
+MSW:
+
+- Added wxGCDC(wxEnhMetaFileDC) ctor (Marcin Wojdyr).
+
 
 2.9.2: (released 2011-07-05)
 ------

include/wx/dcgraph.h

@@ -28,6 +28,9 @@ public:
     wxGCDC( const wxMemoryDC& dc );
 #if wxUSE_PRINTING_ARCHITECTURE
     wxGCDC( const wxPrinterDC& dc );
+#endif
+#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
+    wxGCDC( const wxEnhMetaFileDC& dc );
 #endif
     wxGCDC();
     virtual ~wxGCDC();
@@ -55,6 +58,9 @@ public:
     wxGCDCImpl( wxDC *owner, const wxMemoryDC& dc );
 #if wxUSE_PRINTING_ARCHITECTURE
     wxGCDCImpl( wxDC *owner, const wxPrinterDC& dc );
+#endif
+#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
+    wxGCDCImpl( wxDC *owner, const wxEnhMetaFileDC& dc );
 #endif
     wxGCDCImpl( wxDC *owner );
 

interface/wx/dcgraph.h

@@ -35,6 +35,17 @@ public:
     */
     wxGCDC( const wxPrinterDC& dc );
 
+    /**
+       Constructs a wxGCDC from a wxEnhMetaFileDC.
+
+       This constructor is only available in wxMSW port and when @c
+       wxUSE_ENH_METAFILE build option is enabled, i.e. when wxEnhMetaFileDC
+       class itself is available.
+
+       @since 2.9.3
+    */
+    wxGCDC( const wxEnhMetaFileDC& dc );
+
     /**
        Retrieves associated wxGraphicsContext
     */

src/common/dcgraph.cpp

@@ -114,6 +114,13 @@ wxGCDC::wxGCDC( const wxPrinterDC& dc) :
 }
 #endif
 
+#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
+wxGCDC::wxGCDC(const wxEnhMetaFileDC& dc)
+   : wxDC(new wxGCDCImpl(this, dc))
+{
+}
+#endif
+
 wxGCDC::wxGCDC() :
   wxDC( new wxGCDCImpl( this ) )
 {
@@ -193,6 +200,15 @@ wxGCDCImpl::wxGCDCImpl( wxDC *owner, const wxPrinterDC& dc ) :
 }
 #endif
 
+#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
+wxGCDCImpl::wxGCDCImpl(wxDC *owner, const wxEnhMetaFileDC& dc)
+   : wxDCImpl(owner)
+{
+    Init();
+    SetGraphicsContext(wxGraphicsContext::Create(dc));
+}
+#endif
+
 void wxGCDCImpl::Init()
 {
     m_ok = false;