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

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;