adding comment about wxHAS_OPENGL_ES

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59915 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/interface/wx/glcanvas.h b/interface/wx/glcanvas.h
index d92570869cd51442d0e1b09270db91285c7e2e42..ae30b082d077f6de5b5ed4cb8d6c0a2e848dee87 100644 (file)
--- a/interface/wx/glcanvas.h
+++ b/interface/wx/glcanvas.h
@@ -32,6 +32,9 @@
     best to check your native platform's glcanvas header (on windows
     include/wx/msw/glcanvas.h) to see what features your native platform
     provides.
+    
+    wxHAS_OPENGL_ES is defined on platforms that only have this implementation
+    available (eg the iPhone) und don't support the full specification.
 
     @library{wxgl}
     @category{gl}