[SOLVED] Pointer Style to a dropdown menu
lazarus / 55-TAChart

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donnie · 2016-03-27 20:12

Hi there,
I'd like to show in a ChartSettingsfrm a list of all the available
pointers styles in order the user to select the style for each line(ps
Rectangle,psRightTriangle,psDiamond,psDiagCrossps,psCross,psCircle,psS
tar etc). I want all the styles to be loaded somehow with their shapes
in a dropdown menu (as the listbox example when you press addseries
button). Should I use a TChartlistbox(don't know how) or something
else and how will I load all the styles with their shapes?
Thank you...

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wp · 2016-03-27 20:56

In the attachment, there's a unit which I once wrote for one of my own
projects for series style editing. I guess you find here what you are
looking for.

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donnie · 2016-03-28 10:54

Nice,
I loaded the needed procedures but had a problem at the result of the
drawer pointer where it loads at the function PointByIndex(AIndex:
Char): TPoint; inline;
Result := ACenter + Point(H[AIndex]*ASize.X, V[AIndex]*ASize.Y);
has an error that says canot load POINT + POINT...is not overloaded.
I am trying to find where I should overload this parameter.

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wp · 2016-03-28 16:08

You must have TAGeometry in "uses", it defines the operator overload
of "+" for TPoint.