Making progress on util::dprintf

luprex/cpp/core/enginewrapper.hpp

@@ -227,6 +227,23 @@ struct EngineWrapper {
     //////////////////////////////////////////////////////////////////////////////
     //////////////////////////////////////////////////////////////////////////////
 
+    // Hook dprintf
+    //
+    // The engine provides a function 'util::dprintf' to print debugging
+    // messages. It does not use stderr or std::cerr, because in windows, those
+    // go to the bit-bucket.
+    //
+    // This routine hooks dprintf to change where the output goes. Ideally,
+    // the intent is to send the output somewhere easily accessible, like the
+    // visual studio debug output log, or the unreal editor output log, or
+    // something like that.  Or, better yet, to all those places at once.
+    //
+    // The hook function will get passed one line of output at a time. The line
+    // will only contain printable characters.  The line will not contain a
+    // newline - the newline is implied.
+    //
+    void (*hook_dprintf)(void (*func)(const char *oneline));
+    
     // Restore the wrapper to its initial blank state.
     //
     // Note that the wrapper must have already been initialized using