initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/meta/convertible.h

@@ -0,0 +1,36 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/meta/convertible.h
+// Purpose:     Test if types are convertible
+// Author:      Arne Steinarson
+// Created:     2008-01-10
+// Copyright:   (c) 2008 Arne Steinarson
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_META_CONVERTIBLE_H_
+#define _WX_META_CONVERTIBLE_H_
+
+#include <type_traits>
+
+// NOTE: this class is obsolete and provided only for compatibility, please use
+// the standard class instead.
+//
+// Helper to decide if an object of type D is convertible to type B (the test
+// succeeds in particular when D derives from B)
+template <class D, class B>
+using wxConvertibleTo = std::is_convertible<D*, B*>;
+
+// This is similar to wxConvertibleTo, except that the case of D deriving from
+// B non-publicly will be detected and the correct value (false) will be
+// deduced.
+template <class D, class B>
+struct wxIsPubliclyDerived
+{
+    enum
+    {
+        value = std::is_base_of<B, D>::value && std::is_convertible<D*, B*>::value
+    };
+};
+
+#endif // _WX_META_CONVERTIBLE_H_
+