void some_func(DataPlot& dp)
{
	GraphLayer gl;
	dp.GetParent(gl);
	if(gl)
	{
		GraphPage gp = gl.GetPage();
		if(gp)
			printf("DataPlot %s is in layer %d of page %s\n", dp.GetName(), gl.GetIndex()+1, gp.GetName());
	}
}

void ddd()
{
	GraphLayer gl = Project.ActiveLayer();
	
	DataPlot dp = gl.DataPlots();
	
	some_func(dp);
}