2.2.4.38.2 Project::ActiveCurveActiveCurve
Description
Get the active Curve which is in the active layer of the active page(window).
Syntax
Curve ActiveCurve( )
Parameters
Return
the active Curve object
Examples
EX1
// For this example to run, create a graph with at least one dataplot.
void run_Project_ActiveCurve()
{
using cc = Project.ActiveCurve();
if(cc.IsValid())
{
Dataset xd;
printf("Active dataset is %s",cc.GetName());
if(cc.AttachX(xd, FALSE))
printf(", its corresponding X dataset is %s",xd.GetName());
printf(".\n");
}
else
out_str("There is no active dataset");
}
Remark
The Active Curve in the active layer of the active page(window)
Dataset, Curve and Matrix are different kinds of objects when compared with other
Origin objects. Layers and Pages etc are pure wrapper classes for internal Origin
objects so that you can make assignment between them and they will still be
referencing the same internal Origin object. For example, both gg1 and gg2 below
are the same thing
GraphLayer gg1 = Layer("Graph1");
GraphLayer gg2;
gg2 = gg1;// having two reference object to the same internal layer in Origin
On the other hand, Datasets and Curves and Matrix are wrapper for data objects inside
Origin and the assigment between them are interpreted as arithmetic assignments, so
Curve cc("data1_a", "data1_c");
Curve dd("data1_a", "data1_d");
dd = cc;// put all values from Y column of cc into Y column of dd
Due to this reason, you cannot do things like
Curve cc = Project.ActiveCurve();
but rather, you should use Project.ActiveCurve directly or use the "using" notation.
See Also
Project::ActiveCurveBase,
Project::ActiveFolder,
Project::ActiveLayer
Header to Include
origin.h
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