摘要：//显示批量 车辆的位置信息function TFormMain.ShowCarsPosition: Boolean;var lyr: layer; //层 fts: feature; //特征 pt: MapXLib_TLB.point; //点 mstyle: style; //样式 str: string; //特征标注 speed, x, y: double; Vehiclelist: TStringList; direction, i: Integer;begin Map1.Layers.Remove(1); lyr := Map1.Layers.CreateLa... 阅读全文