C# MapX 如何添加bmp作为自定义的标签

C# MapX 如何添加bmp作为自定义的标签

已成功添加了图元，但是想在其前面添加自定义的bmp文件。

MapXLib.Layer tempstar_lyr;             MapXLib.CoordSys coor = axMap1.DisplayCoordSys;               tempstar_lyr = axMap1.Layers.CreateLayer("temp_start", Type.Missing, 100, 10, coor);             tempstar_lyr.Editable = true;             tempstar_lyr.Visible = true;             tempstar_lyr.AutoLabel = true;             tempstar_lyr.OverrideStyle = true;             tempstar_lyr.Style.SymbolFontColor = 0x0000FF;             tempstar_lyr.Style.SymbolType = (short)MapXLib.SymbolTypeConstants.miSymbolTypeVector;             tempstar_lyr.Style.SymbolVectorSize = 20;                           MapXLib.Feature SymbolObj = new MapXLib.Feature();             SymbolObj.Attach(axMap1.GetOcx());             SymbolObj.KeyValue = "AAAAAAAAAAAAAAAAAAAAAAA";             SymbolObj.Point = pts;             tempstar_lyr.AddFeature(SymbolObj, Type.Missing);             //tempstar_lyr.Refresh();             tempstar_lyr.Editable = false;

     axMap1.Layers.AnimationLayer = mlayer
         ftr = new MapXLib.FeatureClass();
       ftr.Attach(axMap1.GetOcx());  //这里是必须的
       ftr.Type = MapXLib.FeatureTypeConstants.miFeatureTypeSymbol;

            MapXLib.Style sty;
            sty = new MapXLib.StyleClass();
            //定义点图元的样式
            sty.SymbolType = MapXLib.SymbolTypeConstants.miSymbolTypeBitmap;//指定为位图样式
            sty.SymbolBitmapSize = 20;//指定图元大小
            sty.SymbolBitmapName = "TEMP1-32.BMP";////位图文件必须放在安装目录的CUSTSYMB //文件夹下 ,一般在C:\Program Files\MapInfo\MapX 5.0\CUSTSYMB
            sty.SymbolBitmapTransparent = true;//指定位图透明，和图层融为一体
            sty.SymbolBitmapOverrideColor = false;
           sty.SymbolFontColor = 0x08f780
            ftr.Style = sty;
            ftr.Point.Set(X, Y);