如何在鼠标上的teechart中将标签置于前面

问题描述

我在TDBChart中有一个TLineseries。我在Y轴上有汽车的价格,在X轴上有汽车的价格。每个点都有一个标有汽车品牌的商标。但是,当我显示它们时,标签重叠并且难以阅读。如果鼠标光标悬停在标签上方,该如何将标签贴到前面?

我已经看到,当光标悬停在标签上时,颜色会发生变化,这使我相信可以做到这一点。 否则,可以隐藏所有标签,但是当鼠标悬停在标签上时才显示一个标签吗?

图片

光标悬停在标签上:

enter image description here

光标未悬停在标签上:

enter image description here

到目前为止,我的系列的

代码

 // draw graph
          with dbChart1 do
          begin
            ClearChart;
            View3D := false;

            AddSeries(TLineseries.create(self));
            (Series[0] as TLineseries).ColorEachPoint := true;

            CarOwners.tbl_Cars.disableControls;
            with CarOwners do
            begin
              SavePlace := tbl_Cars.GetBookmark;
              tbl_Cars.first;
              while not tbl_Cars.eof do
              begin
                Series[0].AddY(tbl_Cars['Price'],tbl_Cars['Make'],clTeeColor);
                tbl_Cars.next;
              end;
              tbl_Cars.GotoBookmark(SavePlace);
              tbl_Cars.FreeBookmark(SavePlace);
              tbl_Cars.EnableControls;
            end;

            (Series[0] as TLineseries).Pointer.Visible := true;
            (Series[0] as TLineseries).Pointer.Style := psCircle;
            (Series[0] as TLineseries).LinePen.Width := 3;
            (Series[0] as TLineseries).Marks.Visible := true;
            (Series[0] as TLineseries).Marks.DrawEvery := 1;
            (Series[0] as TLineseries).Marks.Autoposition := false;
            (series[0] as tlineseries).Marks.Color := clBlack;
            (series[0] as tlineseries).marks.Font.Color := clWhite;
          end;
          // calculate and add possible values after
          with dbChart1 do
          begin
            if chbl1_Stat_Values.Checked[0] then
            begin
              AddSeries(TFastLineseries.create(self));
              (Series[1] as TFastLineseries)
                .SetFunction(THighTeeFunction.create(self));
              (Series[1] as TFastLineseries).DataSource := Series[0];
              (Series[1] as TFastLineseries).SeriesColor := clRed;
            end;
          end;

          dbChart1.ColorPaletteIndex := 10;

解决方法

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