In my project I've got several TCharts with 2 series and 2 bars in each series. []1
On each of them I need to show the value of the series bars on mouse hoovering over them. I'm using onMouseMove event:
procedure TfrmBoard.chartCountMouseMove(Sender: TObject; Shift:
TShiftState; X, Y: Integer);
var
SeriesIndex : Integer;
begin
with Tcontrol(Sender) do
begin
seriesIndex := (Sender as TChart).series[0].clicked(X,Y);
ShowHint := SeriesIndex <> -1;
if ShowHint then
Hint := FloatToStr((Sender as TChart).series[0].YValues.Value[seriesIndex]);
end;
end;
This code shows the values of the first series in the chart, but not of the second.
If I add a loop, the event will show values of the second series only.
procedure TfrmBoard.chartCountMouseMove(Sender: TObject; Shift:
TShiftState; X, Y: Integer);
var
SeriesIndex : Integer;
i: Integer;
begin
with Tcontrol(Sender) do
begin
for I := 0 to (Sender as TChart).SeriesCount - 1 do
begin
seriesIndex := (Sender as TChart).series[i].clicked(X,Y);
ShowHint := SeriesIndex <> -1;
if ShowHint then
Hint := FloatToStr((Sender as TChart).series[i].YValues.Value[seriesIndex]);
end;
end;
end;
Can somebody help how to show values for both series?
You have to break loop when ShowHint
becomes True
, otherwise it might be overwritten with next False
values
if ShowHint then begin
Hint := FloatToStr((Sender as TChart).series[i].YValues.Value[seriesIndex]);
Break;
end;
By the way, does your TChart
have event OnMouseEnter
for SeriesXX objects?