fix building with GTK+ < 2.8

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70969 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/gtk/dcclient.cpp b/src/gtk/dcclient.cpp
index 2fe53130f8928802eabc080b8f7753fc28cb8243..c427dfa08ceea3c72a4487890b13c7973d763021 100644 (file)
--- a/src/gtk/dcclient.cpp
+++ b/src/gtk/dcclient.cpp
@@ -379,13 +379,18 @@ void wxWindowDCImpl::SetUpDC( bool isMemDC )
             m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_SCREEN );
             m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_SCREEN );
         }
-        else if (m_cmap == gdk_screen_get_rgba_colormap(gdk_colormap_get_screen(m_cmap)))
+#if GTK_CHECK_VERSION(2,12,0)
+        // gdk_screen_get_rgba_colormap was added in 2.8, but this code is for
+        // compositing which requires 2.12
+        else if (gtk_check_version(2,12,0) == NULL &&
+            m_cmap == gdk_screen_get_rgba_colormap(gdk_colormap_get_screen(m_cmap)))
         {
             m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_COLOUR_ALPHA );
             m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_COLOUR_ALPHA );
             m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_COLOUR_ALPHA );
             m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_COLOUR_ALPHA );
         }
+#endif
         else
         {
             m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_COLOUR );