#ifndef _WX_META_IF_H_
#define _WX_META_IF_H_
+#include "wx/defs.h"
+
// NB: This code is intentionally written without partial templates
// specialization, because some older compilers (notably VC6) don't
// support it.
namespace wxPrivate
{
-template<bool Cond> struct wxIfImpl {};
+template <bool Cond>
+struct wxIfImpl
+
+// broken VC6 needs not just an incomplete template class declaration but a
+// "skeleton" declaration of the specialized versions below as it apparently
+// tries to look up the types in the generic template definition at some moment
+// even though it ends up by using the correct specialization in the end -- but
+// without this skeleton it doesn't recognize Result as a class at all below
+#if defined(__VISUALC__) && !wxCHECK_VISUALC_VERSION(7)
+{
+ template<typename TTrue, typename TFalse> struct Result {};
+}
+#endif // VC++ <= 6
+;
// specialization for true:
-template<>
+template <>
struct wxIfImpl<true>
{
template<typename TTrue, typename TFalse> struct Result
} // namespace wxPrivate
-// wxIf<> template defines nested type "value" which is the same as
+// wxIf<> template defines nested type "value" which is the same as
// TTrue if the condition Cond (boolean compile-time constant) was met and
// TFalse if it wasn't.
//
struct wxIf
{
typedef typename wxPrivate::wxIfImpl<Cond>
- ::template Result<TTrue,TFalse>::value
+ ::template Result<TTrue, TFalse>::value
value;
};