KB10231 - I am trying to rotate a SymbolFont, but the source bombs for some reason. The problems are that the override rotate function for the SymbolFont never gets called and, I think, for some reason the draw routine hard codes the angle to 0. I am sending you the code to show what I am doing.

Try using rotation of MarkerSymbol, like this:

shp.AddPart ;
shp.AddPoint( GisPoint( runSavedSearchQueryOrigin_longitude.AsFloat ...
shp.MarkerSymbol := SymbolList.Prepare('some symbol');
shp.MarkerRotation := Pi/2;
shp.Invalidate;

By-the-way, if you want to use R-Tree then:

layer.UseRTtree := True;

and after any shape modification (adding point), you must call shp.Update.