# 2.2.4.17.21 GraphLayer::GetLayerContents

## Description

get the contents of a graph layer into a tree

## Syntax

BOOL GetLayerContents( TreeNode & tr, DWORD dwCtrl = 0 )

## Parameters

tr
[output] a TreeNode to receive the layer contents
dwCtrl
[input] bits to control what to get into the tree, supported bits include
GETLC_STYLE_HOLDERS to get style holders that are in the layer
GETLC_DATAPLOTS to get data plots
GETLC_NO_LIMITS to when GETLC_DATAPLOTS is specified, plot XY limits are also obtain, which is time consuming, so use this to speed things up if the limits are not used

## Examples

EX1

//Get the contents of the graph layer into a tree. Then use the tree to draw a new graph.
void GraphLayer_GetLayerContents_ex1()
{
GraphLayer gl = Project.ActiveLayer();
if(!gl)
return;

Tree tr;
bool bWasGroup = gl.UngroupPlots();
//get the contents of a graph layer into a tree
gl.GetLayerContents(tr, GETLC_DATAPLOTS | GETLC_NO_LIMITS);

GraphPage gp;
gp.Create();
GraphLayer glNew = gp.Layers(0);

// add plots by the settings of tr, the plots should be ungrouped
}