From 1fa4efc47e5d3ff23fe9dcd7c44c027439599a90 Mon Sep 17 00:00:00 2001
From: Artur Wieczorek <artwik@wp.pl>
Date: Wed, 16 Mar 2016 21:41:20 +0100
Subject: [PATCH] Implemented measuring context for Cairo renderer (wxMSW).

---
 src/generic/graphicc.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/generic/graphicc.cpp b/src/generic/graphicc.cpp
index 09583ce5b4..2aa701358d 100644
--- a/src/generic/graphicc.cpp
+++ b/src/generic/graphicc.cpp
@@ -527,6 +527,25 @@ private:
 };
 #endif // wxUSE_IMAGE
 
+#ifdef __WXMSW__
+class wxCairoMeasuringContext : public wxCairoContext
+{
+public:
+    wxCairoMeasuringContext(wxGraphicsRenderer* renderer)
+        : wxCairoContext(renderer, m_hdc = ::GetDC(NULL))
+    {
+    }
+
+    virtual ~wxCairoMeasuringContext()
+    {
+        ::ReleaseDC(NULL, m_hdc);
+    }
+
+private:
+    HDC m_hdc;
+};
+#endif // __WXMSW__
+
 // ----------------------------------------------------------------------------
 // wxCairoPenBrushBaseData implementation
 //-----------------------------------------------------------------------------
@@ -2575,6 +2594,9 @@ wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
 {
 #ifdef __WXGTK__
     return CreateContextFromNativeWindow(gdk_get_default_root_window());
+#elif defined(__WXMSW__)
+    ENSURE_LOADED_OR_RETURN(NULL);
+    return new wxCairoMeasuringContext(this);
 #else
     return NULL;
     // TODO